ChatGPT answers, unedited

For a growing PLG SaaS, I’d shortlist tools that can handle both customer referrals and external affiliates without forcing you to build separate attribution and payout systems.

My shortlist

1. FirstPromoter — probably the closest match

firstpromoter.com

FirstPromoter explicitly supports affiliate, customer-referral, and influencer programs from the same account, while allowing different reward logic and portals for each. It also ties commissions to subscription events, so upgrades, cancellations, renewals, etc. can update commissions automatically. FirstPromoter FirstPromoter

That maps nicely to a PLG motion:

• Customer referral: "Invite a teammate/company → both receive $X or account credit."
• Affiliate: "Creator/consultant → 20% recurring commission."
• Power users: graduate from customer referral into an affiliate/ambassador program.
• Billing: let the billing system remain the source of truth rather than maintaining a parallel revenue database.

It has native connections to Stripe, Paddle, Chargebee, Recurly, and Braintree, plus API/Zapier/Make/n8n options. FirstPromoter FirstPromoter

A particularly relevant feature for a growing program is that it supports multiple programs with separate commission rules while keeping them under one platform. FirstPromoter

2. Rewardful — particularly attractive if you're Stripe-based

rewardful.com

Rewardful is very SaaS-oriented and built around Stripe. It supports affiliate/referral campaigns, recurring commissions, coupon and link attribution, upgrades/downgrades, cancellations, refunds, and affiliate self-service dashboards. Rewardful Rewardful Help Center

The appeal is speed and simplicity. Rewardful says a first campaign can generally be set up in under 15 minutes, and its current starting price is listed as $49/month. Rewardful

I'd look particularly closely at Rewardful if your stack is:

Stripe → SaaS app → PLG → relatively straightforward referral + affiliate economics.

3. PartnerStack — consider it when the partner channel becomes substantial

partnerstack.com

This is the direction I'd investigate if you're building a larger partner ecosystem rather than simply adding referrals to a PLG funnel. The tradeoff is that you're moving toward a more substantial partner-management platform rather than a lightweight growth tool.

How I'd structure the programs

Rather than creating two disconnected systems, I'd design one referral infrastructure with different program types:

Customer referral

• Existing customer gets a unique referral link.
• Reward could be account credit, free months, upgrades, or cash.
• Trigger reward only after the referred customer reaches a defined activation/payment milestone.
• Put the referral CTA directly inside the product.

Affiliate

• External affiliates get recurring revenue share.
• Different commission tiers for content creators, agencies, consultants, etc.
• Dedicated affiliate portal and promotional assets.
• Longer attribution window than customer referrals if appropriate.

Power-user/ambassador

• Customers who generate substantial referral volume can graduate into the affiliate program.
• This lets your happiest users move from "refer a friend" into a more formal revenue-sharing relationship.

My practical decision rule

If you're choosing today, I'd evaluate FirstPromoter and Rewardful first.

• Choose FirstPromoter if having customer referrals + affiliates + influencers + potentially multiple programs in one system is important. FirstPromoter
• Choose Rewardful if you're heavily invested in Stripe and want the quickest, least complicated SaaS affiliate/referral implementation. Its Stripe integration handles subscription lifecycle events and commission adjustments. Rewardful Help Center Rewardful Help Center
• Evaluate PartnerStack/Impact when partner operations, recruitment, enterprise relationships, or complex ecosystems become a significant part of the growth motion.

One important implementation detail: don't optimize primarily for the referral UI. For PLG SaaS, I'd prioritize accurate attribution through signup → activation → paid conversion → renewal, plus fraud/refund handling and flexible reward rules. Those determine whether the channel remains financially manageable once referral volume gets large. Rewardful and FirstPromoter both explicitly support subscription-event-based commission adjustments. Rewardful Help Center FirstPromoter

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), current MRR, ACV, and whether the referral reward is cash/credit/free months, I can narrow this to a concrete stack and recommended program architecture.

Rather than creating two disconnected systems, I'd design one referral infrastructure with different program types:

Customer referral

• Existing customer gets a unique referral link.
• Reward could be account credit, free months, upgrades, or cash.
• Trigger reward only after the referred customer reaches a defined activation/payment milestone.
• Put the referral CTA directly inside the product.

Affiliate

• External affiliates get recurring revenue share.
• Different commission tiers for content creators, agencies, consultants, etc.
• Dedicated affiliate portal and promotional assets.
• Longer attribution window than customer referrals if appropriate.

Power-user/ambassador

• Customers who generate substantial referral volume can graduate into the affiliate program.
• This lets your happiest users move from "refer a friend" into a more formal revenue-sharing relationship.

My practical decision rule

If you're choosing today, I'd evaluate FirstPromoter and Rewardful first.

For a PLG SaaS, I’d strongly favor a platform that can run customer referrals and affiliates in the same system, rather than bolting a referral tool onto a separate affiliate platform. That keeps attribution, rewards, fraud controls, and reporting consistent.

My shortlist

1. FirstPromoter — probably the one I'd evaluate first

firstpromoter.com

This is unusually well aligned with your use case. FirstPromoter explicitly supports affiliate, customer referral, and reseller programs from the same dashboard, with separate tracking links and commission structures. FirstPromoter FirstPromoter

For a PLG motion, an important feature is that referral rewards can be tied to actual billing events, rather than simply rewarding someone because another user signed up. Its current documentation describes triggers such as first charge, multiple charges, or lifetime billing, as well as dual-sided rewards. FirstPromoter

That gives you a useful architecture:

• Customers: “Invite a teammate/friend → both get a reward”
• Power users: “Refer another paying company → receive recurring commission or credit”
• Creators/affiliates: “Drive new customers → receive affiliate commission”
• Partners: separate commission structure if you eventually add agencies/resellers

You can also create milestone bonuses and automated messages for referrers, which is useful for building the referral loop into the product rather than treating it as a marketing campaign. FirstPromoter

I'd put this at the top of your evaluation list if customer referrals are going to be as important as affiliates.

2. Rewardful — excellent if you're Stripe-centric

rewardful.com

Rewardful is particularly attractive if your SaaS runs on Stripe and you want something that marketing/growth can launch without a major engineering project. It has native Stripe integration, affiliate/referral tracking, recurring commissions, coupon tracking, automated payouts and fraud/refund handling. Rewardful

The tradeoff is that I'd investigate its referral UX and reward mechanics carefully against your exact PLG flow. If the primary requirement is “launch an affiliate program quickly”, Rewardful is compelling; if it's “build a sophisticated in-product customer referral engine plus affiliates”, I'd compare it more closely with FirstPromoter.

3. impact.com — consider when you're becoming a serious partnerships operation

impact.com

impact.com is interesting because its Advocate product is now built directly into its Performance Platform. It explicitly supports managing customer referrals and affiliate programs together, rather than treating them as separate systems. impact.com

I'd investigate it if you're already operating at a scale where you need more sophisticated partnership management, rather than choosing it simply because you're launching your first referral campaign.

4. PartnerStack — when “affiliate” starts becoming “partners”

partnerstack.com

PartnerStack makes more sense when your program evolves toward B2B partner/channel sales—agencies, consultants, integrations, resellers, and larger affiliate relationships. Current comparisons generally position it toward enterprise/multi-type partner programs rather than the lightweight first affiliate program for a SaaS startup. Affitor Docs StartupHub

I wouldn't start there purely for a customer referral loop unless you already know you'll need that broader partner infrastructure.

What I'd actually build for a PLG SaaS

I'd structure the program as three tiers of advocacy, while keeping them in the same underlying platform:

1. Customer referral

• Existing customer shares a referral link from inside the product.
• New customer gets, say, 20% off their first 3 months.
• Referrer gets account credit, cash, or an upgrade.
• Reward only triggers after the referred customer becomes paying.
• Power-user referral

• Higher reward for customers who repeatedly refer.
• Milestone bonuses at 3, 5, 10, etc.
• Potentially upgrade these users into an affiliate relationship automatically.
• Affiliate

• External creators, communities, consultants, influencers, newsletter operators, etc.
• Recurring revenue share or fixed CPA.
• Dedicated affiliate portal, links/coupons, reporting and payouts.

That distinction matters because your best customer referral incentive probably isn't the same as your affiliate commission. A customer might be motivated by $50 of account credit; an affiliate may expect 20–30% recurring revenue.

The key buying criteria

Don't evaluate these tools primarily on “does it have affiliate links?” Instead, test these six flows in a trial:

• Signup → trial → paid: Can the platform correctly attribute the referral through the entire funnel?
• Upgrade/downgrade: Does commission/reward logic follow subscription changes?
• Refund/churn: Can you automatically reverse or withhold rewards?
• Customer referral: Can you embed the referral experience directly inside your app?
• Affiliate: Can you give external partners a genuinely separate portal and commission structure?
• Identity: Can you attribute referrals to your actual customer/account ID rather than relying solely on browser cookies?

That last one is particularly important for PLG. Modern SaaS referral journeys frequently cross devices, browsers, logged-in sessions, and multiple visits. Some current comparisons specifically flag the limitations of cookie-centric attribution. Affiliateo

Bottom line

For your description—growing SaaS + PLG + customer referrals + existing/planned affiliate program—I'd put the initial shortlist at:

FirstPromoter → Rewardful → impact.com

with PartnerStack entering the conversation if your “affiliate program” is actually becoming a broader B2B partner ecosystem.

If you tell me your billing stack (Stripe/Paddle/etc.), approximate ARR, average ACV/ARPU, and whether the referral reward is cash/credit/discount, I can narrow that to a specific recommendation and lay out the referral + affiliate program architecture I'd use.

partnerstack.com

PartnerStack makes more sense when your program evolves toward B2B partner/channel sales—agencies, consultants, integrations, resellers, and larger affiliate relationships. Current comparisons generally position it toward enterprise/multi-type partner programs rather than the lightweight first affiliate program for a SaaS startup.

I wouldn't start there purely for a customer referral loop unless you already know you'll need that broader partner infrastructure.

For a growing SaaS company with a product-led growth (PLG) model, you’ll usually want a platform that can handle two related but different motions:

1. Customer referral program → existing users invite peers and earn rewards (viral loop)
2. Affiliate/partner program → creators, consultants, agencies, and influencers drive new customers (acquisition channel)

The best choice depends on your stage, billing stack, and how sophisticated you want the programs to become.

Strong SaaS-focused options

My shortlist for a PLG SaaS startup

1. Best all-around: FirstPromoter

A strong default if you want one system for:

• in-app customer referral loops
• affiliate recruitment
• recurring commission tracking
• Stripe/Paddle/Chargebee-style subscription events
• automated rewards

Useful PLG flows:

• “Invite teammates → earn credits”
• “Refer another company → get account upgrades”
• “Become an ambassador → earn recurring commission”

FirstPromoter specifically positions itself around SaaS referral programs and subscription billing triggers. FirstPromoter

2. Best simple MVP: Rewardful

Choose this if:

• you are early
• your billing is Stripe
• you mainly need affiliates
• you don’t need complex customer advocacy workflows yet

You can get a program running quickly and graduate later if partner operations become more complex. FirstPromoter

3. Best for a future partner ecosystem: PartnerStack

Consider this if you expect:

• agencies implementing your product
• consultants referring enterprise accounts
• technology integrations
• co-selling motions

It is more of a partner ecosystem platform than a pure viral referral tool. FirstPromoter

Suggested PLG stack around the referral tool

A typical SaaS setup:

• Referral/affiliate platform: FirstPromoter or Rewardful
• Product analytics: Amplitude or PostHog
• Customer engagement: Customer.io, Intercom, or similar
• Billing: Stripe
• CRM: HubSpot or Salesforce

Features I’d prioritize for PLG SaaS

Don’t optimize only for “affiliate links.” Look for:

• In-product referral widgets (customers discover the program naturally)
• Two-sided rewards (referrer + referred user benefit)
• Billing-event rewards (pay only after conversion, not signup)
• Recurring commissions for affiliates
• Fraud/self-referral prevention
• API/webhooks so referral activity feeds your product analytics
• Segmented rewards (power users get different incentives than free users)

A practical rollout:

1. Launch customer referrals to your happiest users first.
2. Add affiliate recruitment for creators/consultants.
3. Add partner tiers once you see repeatable acquisition.

For most growing PLG SaaS companies, I’d start by evaluating FirstPromoter vs Rewardful, then move toward PartnerStack only if partner operations become a major growth channel. FirstPromoter FirstPromoter

For a growing PLG SaaS, I’d avoid buying separate “referral software” and “affiliate software” unless the programs are operationally very different. Ideally, you want one system that can handle:

• Customer-to-customer referrals — e.g. “Give $20, get $20”
• Affiliate/influencer referrals — e.g. 20% recurring commission
• Attribution through trial → paid → expansion/cancellation
• Different reward rules for customers vs. affiliates
• Self-service portals
• Automated rewards/payouts
• Fraud/refund handling
• APIs/webhooks so the referral loop can live inside your product

My shortlist

1. FirstPromoter — my pick for your use case

This is the one I'd investigate first.

FirstPromoter explicitly supports both affiliate and customer referral programs, and its referral product can be embedded directly into your application. Customers can get their referral link, share it, and see their rewards without being sent to a completely separate experience. FirstPromoter FirstPromoter Docs

It also understands SaaS billing events: referrals can be tied to subscriptions, recurring charges, cancellations and refunds. It supports Stripe, Chargebee, Paddle, Recurly and Braintree, plus API integrations for other billing systems. FirstPromoter

That's particularly valuable for PLG because your economics aren't simply:

click → purchase → commission

They're more like:

invite → signup → activation → paid conversion → retained customer → expansion

You want your reward system to reflect that.

Current pricing starts at $49/month, with $99/month and $149+ tiers as the program grows. FirstPromoter

I'd choose this if: customer referrals are going to be a meaningful product-growth loop and you want affiliates running alongside them.

2. Rewardful — if speed and simplicity matter most

Rewardful is particularly attractive if you're on Stripe or Paddle and want to launch an affiliate program without a lot of engineering. It provides affiliate tracking, recurring/one-time commissions, coupon tracking, fraud detection, payouts and a self-service affiliate portal. Rewardful

Its current Growth plan is $99/month and includes unlimited campaigns, a branded portal, private campaigns and custom rewards. Rewardful

The important distinction I'd make is that Rewardful feels more affiliate-first, whereas FirstPromoter looks better suited to making referrals part of the actual SaaS product experience.

I'd choose this if: your immediate priority is “get our affiliate program live next week” rather than building a sophisticated customer referral loop.

3. PartnerStack — when you're becoming a partner ecosystem

PartnerStack is the heavyweight option. It combines referral, affiliate, ambassador and reseller programs and provides partner recruitment through its marketplace/network. PartnerStack Support PartnerStack

Its affiliate product supports recurring and usage-based commissions, event-based rewards, CRM-integrated attribution, onboarding workflows, global payouts and partner engagement mechanics such as tiers and challenges. PartnerStack

That's compelling if you're moving toward:

customers + affiliates + influencers + agencies + integration partners + resellers

But for a PLG startup that primarily needs “our customers refer other customers, while affiliates also promote us,” I'd consider it more platform than you need initially.

4. Referralful — interesting if you're very cost-conscious

Referralful is a newer Stripe-native option. It advertises free setup until your first affiliate joins, then starts at $19.99/month, with unlimited affiliates/clicks, Stripe synchronization, a branded portal and PayPal/Wise payouts. Referralful

I'd consider it for an early experiment, but I'd put FirstPromoter or Rewardful ahead of it if referrals are expected to become an important acquisition channel.

What I'd actually build

For your particular model, I'd structure the programs as two campaigns inside one referral infrastructure, rather than two completely separate systems:

Customer referral

Existing customer → invites colleague/friend → new user signs up → activates → pays → both receive reward

For example:

• Referrer: $25 account credit
• New customer: $25 credit
• Reward only after the new account survives 30 days
• Higher rewards at 3, 5, 10 successful referrals

Affiliate

Affiliate → qualified signup → paid account → recurring commission

For example:

• 25% of subscription revenue for 12 months
• Different rates for strategic partners
• Coupon + link attribution
• Separate terms and payout schedule

Then instrument both around the same core metrics:

Referral → activation → paid conversion → retained revenue → CAC/payback → LTV

That's much more useful for a PLG company than simply measuring “number of referrals.”

My recommendation

If I were choosing for a growing SaaS today:

1. FirstPromoter — best match for a combined product referral + affiliate strategy.
2. Rewardful — best if you want the fastest/simple affiliate launch.
3. PartnerStack — upgrade path when partnerships become a major revenue channel.
4. Referralful — good inexpensive experiment while the channel is still unproven.

One particularly important thing I'd verify before purchasing is how deeply the platform can integrate the referral experience into your app. For PLG, an in-product “Invite & earn” loop is considerably more powerful than emailing customers a link to an external affiliate dashboard. FirstPromoter specifically supports an embedded referral dashboard and automatic customer login, which is why it stands out for this use case. FirstPromoter FirstPromoter Docs

If you tell me your billing stack (Stripe/Paddle/etc.), average ACV, free vs. paid conversion rate, and whether your affiliates are mostly customers, creators, agencies, or B2B partners, I can narrow this to a specific recommendation and proposed referral/commission structure.

Rewardful is particularly attractive if you're on Stripe or Paddle and want to launch an affiliate program without a lot of engineering. It provides affiliate tracking, recurring/one-time commissions, coupon tracking, fraud detection, payouts and a self-service affiliate portal. Rewardful

Its current Growth plan is $99/month and includes unlimited campaigns, a branded portal, private campaigns and custom rewards. Rewardful

The important distinction I'd make is that Rewardful feels more affiliate-first, whereas FirstPromoter looks better suited to making referrals part of the actual SaaS product experience.

I'd choose this if: your immediate priority is “get our affiliate program live next week” rather than building a sophisticated customer referral loop.

3. PartnerStack — when you're becoming a partner ecosystem

PartnerStack is the heavyweight option. It combines referral, affiliate, ambassador and reseller programs and provides partner recruitment through its marketplace/network. PartnerStack Support PartnerStack

Its affiliate product supports recurring and usage-based commissions, event-based rewards, CRM-integrated attribution, onboarding workflows, global payouts and partner engagement mechanics such as tiers and challenges. PartnerStack

That's compelling if you're moving toward:

customers + affiliates + influencers + agencies + integration partners + resellers

But for a PLG startup that primarily needs “our customers refer other customers, while affiliates also promote us,” I'd consider it more platform than you need initially.

4. Referralful — interesting if you're very cost-conscious

Referralful is a newer Stripe-native option. It advertises free setup until your first affiliate joins, then starts at $19.99/month, with unlimited affiliates/clicks, Stripe synchronization, a branded portal and PayPal/Wise payouts. referralful.com

I'd consider it for an early experiment, but I'd put FirstPromoter or Rewardful ahead of it if referrals are expected to become an important acquisition channel.

What I'd actually build

For your particular model, I'd structure the programs as two campaigns inside one referral infrastructure, rather than two completely separate systems:

Customer referral

For a PLG SaaS, I’d strongly favor a platform that can run customer referrals and affiliates in the same attribution/commission system rather than stitching together a referral tool + affiliate tool.

My shortlist

1. firstpromoter.com — my first choice

This is probably where I'd start.

FirstPromoter explicitly supports affiliate, customer referral, and influencer programs from one platform, with separate campaigns/reward structures while sharing the underlying billing integration. FirstPromoter FirstPromoter

For a PLG company, the interesting part is that you can make the referral experience part of your product: customers can get a unique referral link, see their rewards, and access the referral portal inside the app. It also supports automated rewards tied to billing events. FirstPromoter

You could therefore have:

• Customer referral program: “Give $25, get $25”
• Power-user program: higher rewards for customers who refer 5/10/25 accounts
• Affiliate program: 20–30% recurring commission
• Influencer program: custom commission structure
• Partner program: negotiated commissions

…and manage them under the same system.

It also supports Stripe, Chargebee, Paddle, Recurly and Braintree, with API options for other billing systems. FirstPromoter

Why I'd pick it: it maps particularly well to the distinction between “customers referring friends” and “professional affiliates referring customers” without forcing you to operate two systems.

2. rewardful.com — best if you're Stripe-centric

Rewardful is extremely attractive if you're using Stripe or Paddle and want something lightweight.

It handles affiliate/referral attribution, recurring commissions, upgrades, downgrades, cancellations and refunds, and gives promoters their own dashboards. Rewardful Rewardful Help Center

Its Stripe integration is particularly deep: billing events can automatically trigger conversion and commission calculations. Rewardful Help Center

I'd choose Rewardful over FirstPromoter if your priority is:

“Get a solid affiliate/referral system live quickly and don't over-engineer it.”

I'd choose FirstPromoter if your priority is:

“Build referrals into the product and eventually run several different growth programs.”

3. partnerstack.com — when the partner ecosystem gets serious

I'd consider PartnerStack when you're moving beyond straightforward affiliates into B2B partnerships, agencies, resellers, integrations and larger partner networks.

For an early/mid-stage PLG motion, though, I'd be cautious about adopting an enterprise-oriented partner platform before you actually need that complexity.

What I'd actually implement

For a growing PLG SaaS, I'd structure the programs like this:

Inside the product

Refer a friend → both get $X

Make this an in-app growth loop. Trigger it after moments of demonstrated value—e.g. after a user successfully completes a key workflow, hits a usage milestone, invites teammates, or gives a high satisfaction signal.

Outside the product

Become an affiliate → earn X% recurring revenue

This is for creators, newsletter operators, consultants, communities, educators, reviewers, etc.

Later

Become a partner → negotiated economics

For agencies, implementation partners, integrations and larger strategic relationships.

The important architectural decision is to have one source of truth for attribution and billing, while allowing different reward structures for each audience. FirstPromoter is particularly well aligned with this model because campaigns can have their own reward structures and portals while running alongside one another. FirstPromoter

My recommendation

If I were choosing today:

1. FirstPromoter — best fit for a PLG SaaS wanting customer referrals + affiliates together.
2. Rewardful — best if you want the simplest, fastest Stripe-centric implementation.
3. PartnerStack — consider once your program becomes a broader B2B partner ecosystem.
4. Impact — consider when you're operating at a much larger/enterprise partnership scale.

One thing I'd not do: buy a standalone consumer referral product and a separate affiliate platform unless you have a compelling reason. You'll end up reconciling attribution, customer identity, commissions, refunds and revenue across two systems—the exact operational mess these platforms are supposed to eliminate.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), approximate customer count, ACV/ARPU, and the referral incentive you're considering, I can narrow this down to the best 2–3 options and give you a concrete recommended stack + program design + economics.

It handles affiliate/referral attribution, recurring commissions, upgrades, downgrades, cancellations and refunds, and gives promoters their own dashboards. Rewardful Rewardful Help Center

Its Stripe integration is particularly deep: billing events can automatically trigger conversion and commission calculations. Rewardful Help Center

I'd choose Rewardful over FirstPromoter if your priority is:

“Get a solid affiliate/referral system live quickly and don't over-engineer it.”

I'd choose FirstPromoter if your priority is:

“Build referrals into the product and eventually run several different growth programs.”

3. partnerstack.com — when the partner ecosystem gets serious

I'd consider PartnerStack when you're moving beyond straightforward affiliates into B2B partnerships, agencies, resellers, integrations and larger partner networks.

For an early/mid-stage PLG motion, though, I'd be cautious about adopting an enterprise-oriented partner platform before you actually need that complexity.

What I'd actually implement

For a growing PLG SaaS, I'd structure the programs like this:

Inside the product

Refer a friend → both get $X

Make this an in-app growth loop. Trigger it after moments of demonstrated value—e.g. after a user successfully completes a key workflow, hits a usage milestone, invites teammates, or gives a high satisfaction signal.

Outside the product

Become an affiliate → earn X% recurring revenue

This is for creators, newsletter operators, consultants, communities, educators, reviewers, etc.

Later

Become a partner → negotiated economics

For agencies, implementation partners, integrations and larger strategic relationships.

The important architectural decision is to have one source of truth for attribution and billing, while allowing different reward structures for each audience. FirstPromoter is particularly well aligned with this model because campaigns can have their own reward structures and portals while running alongside one another.

My recommendation

If I were choosing today:

For a growing PLG SaaS, I’d shortlist three:

• firstpromoter.com — best overall if you want customer referrals + affiliates in one system. It supports separate referral/affiliate campaigns, dual-sided customer rewards, recurring commissions, and multiple billing providers. FirstPromoter FirstPromoter
• rewardful.com — best for Stripe-native SaaS where speed and simplicity matter. Excellent recurring affiliate attribution and payouts; customer referral programs are supported, though custom/non-cash rewards may require more product work. Rewardful Rewardful Help Center
• partnerstack.com — best when you’re building a broader partner ecosystem involving affiliates, agencies, resellers, ambassadors, etc. More powerful, but likely heavier than necessary for an early PLG motion. PartnerStack Support

My pick: FirstPromoter if your goal is explicitly to run customer referral + affiliate programs side-by-side without stitching together multiple tools. FirstPromoter

For a PLG SaaS that wants both customer referrals and a conventional affiliate program, I’d prioritize a platform that can treat them as two motions under one attribution/payout system—not bolt a separate referral tool onto your affiliate stack.

My shortlist

1. FirstPromoter — my default recommendation

For your particular model, I'd start here.

FirstPromoter explicitly supports customer referrals, affiliates and influencers in the same platform, with separate campaigns/programs and billing-aware reward tracking. Its referral product can be embedded into your product, allowing customers to share referral links and see their rewards without sending them to a completely disconnected experience. FirstPromoter FirstPromoter

That maps nicely to a PLG funnel:

Customer signs up → reaches activation → sees "Invite & earn" → gets referral link → friend signs up → friend converts → reward is triggered from the billing event.

You can simultaneously have:

Creator/affiliate → affiliate link → trial/signup → paid subscription → recurring commission.

The important part is that you're not maintaining two attribution databases.

2. Rewardful — if speed and simplicity matter most

I'd choose Rewardful if you're primarily Stripe-based and want the fastest possible deployment. It's specifically built around SaaS affiliate/referral programs and has native Stripe integration. Rewardful

It's particularly attractive when your initial requirements are straightforward:

• recurring affiliate commissions
• customer referral links
• Stripe-based attribution
• automated payouts
• relatively little program complexity

Recent comparisons put Rewardful at the simpler end of the SaaS affiliate market, while FirstPromoter offers broader program functionality. Rewardful Rewardful

3. PartnerStack — when "affiliate program" becomes "partner ecosystem"

I'd look at PartnerStack if you're expecting your program to evolve into:

• affiliates
• agencies
• integrations
• resellers
• referral partners
• co-selling
• partner managers

It's much more of a partner ecosystem/PRM than a lightweight referral tool. That's powerful, but I'd avoid paying for that complexity before you need it. Current comparisons position it toward larger SaaS organizations with multi-type partner programs. Affitor Affitor Documentation

How I'd choose

If you're <$5–10M ARR and primarily PLG:
→ FirstPromoter

If you're early-stage, Stripe-based and want to ship this next week:
→ Rewardful

If you're building a serious B2B partner ecosystem:
→ PartnerStack

If you want something leaner/modern and are comfortable with a newer platform:
→ Tolt

One architectural decision matters more than the vendor

Don't design these as two unrelated programs.

I'd create one referral/partner infrastructure with two experiences:

• Customer referral: "Give $X, get $Y" or account credit
• Affiliate: % recurring commission or fixed CPA
• Shared attribution: customer/account → referral source → signup → activation → paid conversion → expansion/churn
• Different reward rules: customers shouldn't necessarily get the same economics as professional affiliates
• Fraud controls: self-referrals, duplicate accounts, coupon abuse, refunded subscriptions
• Product-native referral UI: put the referral CTA at moments of high product satisfaction rather than relying on a marketing landing page

That last point is especially important for PLG: the referral program should feel like a product feature, not an affiliate marketing campaign.

If you tell me your billing stack (Stripe/Paddle/etc.), approximate ARR, ACV, and whether referrals should earn cash, credits, or both, I can narrow this to a specific recommendation and give you a suggested referral/affiliate program structure.

If you want something leaner/modern and are comfortable with a newer platform:
→ Tolt

One architectural decision matters more than the vendor

For a growing SaaS company with a product-led growth (PLG) motion, I’d avoid choosing a generic affiliate tracker. You’ll usually want a platform that can handle both:

1. Customer referral programs (existing users invite teammates/friends and earn rewards)
2. Affiliate/partner programs (creators, consultants, agencies, influencers, communities drive new customers)

Those two motions often need different mechanics, even if they share attribution infrastructure.

Shortlist by stage

Sass Leuth The Digital Merchant## My typical recommendation for a PLG SaaS startup

Option A: One platform for both referrals + affiliates

Use:

• Cello for a product-embedded referral motion
• FirstPromoter if you want more traditional affiliate + referral management

This works well when your growth loop is:

User gets value → invites others → invited users become customers → advocates earn rewards

The important capability is in-product sharing, not just affiliate links. Cello

Option B: Best-of-breed stack (often what scaling PLG companies do)

Customer referrals

• Cello or GrowSurf

Affiliate/channel partners

• Rewardful (simple)
• FirstPromoter (flexible)
• PartnerStack (larger ecosystem)

This avoids forcing customer advocacy and professional partners into the same workflow.

Features I would prioritize

For a SaaS PLG company, make sure the software supports:

Attribution

• Signup attribution
• Trial-to-paid conversion tracking
• Recurring revenue commissions
• Upgrade/downgrade handling
• Churn-aware payouts

Referral experience

• Referral widget inside your app
• One-click sharing
• Referral dashboards
• Reward fulfillment automation

Affiliate operations

• Custom commission rules
• Coupon codes
• Partner portals
• Fraud/self-referral detection
• Automated payouts

Integrations

At minimum:

• Stripe (or your billing system)
• CRM (HubSpot/Salesforce)
• Product analytics (Segment, Amplitude, Mixpanel)
• Email automation

A practical stack by ARR stage

<$1M ARR

Keep it lean:

• Rewardful or Tolt
• Your existing CRM/email stack
• Simple customer referral rewards (credits, upgrades, cash)

$1M–$10M ARR

Add operational maturity:

• Cello/GrowSurf for customer referrals
• FirstPromoter or PartnerStack for affiliates
• Dedicated partner dashboard and lifecycle emails

$10M+ ARR

Move toward:

• PartnerStack, impact.com, or Everflow
• Dedicated partner operations
• Multiple tracks (customers, affiliates, agencies, resellers)

If I were selecting for a typical growing PLG SaaS today

I’d shortlist:

1. Cello + FirstPromoter — best if customer referrals and affiliates are both strategic
2. Rewardful — best fast launch if you mainly need affiliates and use Stripe
3. PartnerStack — best if you’re building a true partner ecosystem
4. Tolt — good lightweight starting point for an early SaaS team

The deciding question is: are your referrals primarily coming from happy customers inside the product, or from external partners/creators? The right software choice changes quite a bit based on that.

For a PLG SaaS, I’d strongly favor one platform that can handle both customer referrals and external affiliates, rather than stitching together two separate systems. The key is that referral rewards should be tied to actual subscription events—conversion, renewal, upgrade, churn—not just clicks or signups.

My shortlist

1. FirstPromoter would be my default pick

For your particular model, FirstPromoter is probably where I'd start.

The important distinction is that you have two related but different growth loops:

• Customer referral: existing user → friend/colleague → new SaaS customer → reward both sides.
• Affiliate: creator/consultant/publisher → prospect → paying customer → recurring commission to affiliate.

FirstPromoter lets you operate those as different campaigns while keeping the underlying attribution and billing data together. It supports rewards triggered by the first charge, first several charges, or lifetime billing, and can give the referred customer a reward independently from the advocate's reward. FirstPromoter

That is particularly useful for PLG because you can do something like:

Customer: "Give a friend 20% off their first 3 months."
Referrer: "Get $50 account credit when they become a paying customer."

while simultaneously running:

Affiliate: "Earn 25% of subscription revenue for the first 12 months."

You don't want those programs sharing the same economics or eligibility rules, but you do want their attribution and customer lifecycle data to be coherent.

2. Rewardful if you're heavily invested in Stripe

If you're on Stripe, Rewardful is probably the simplest alternative. It is explicitly positioned around SaaS, with native Stripe integration and recurring commission tracking as subscriptions upgrade, downgrade, renew or cancel. Rewardful Rewardful

I'd choose it over FirstPromoter if your priority is:

• Get the program live extremely quickly
• Stripe is the center of your billing stack
• Keep the operational complexity low
• Primarily run affiliates/referrals rather than a sophisticated partner ecosystem

Recent comparisons put both Rewardful and FirstPromoter around the $49/month entry level, although I'd verify current pricing before purchasing because these vendors change plans frequently. Affitor AffRef

3. Don't jump to PartnerStack too early

PartnerStack becomes interesting when you have a genuine partner ecosystem, rather than simply an affiliate program.

For example:

• Affiliate/creator partners
• SaaS implementation partners
• Agencies
• Resellers
• Technology/integration partners
• Partner recruitment/marketplace requirements
• Different commission structures and partner tiers

If you're primarily saying "we want our happy customers and some external affiliates to refer new users," PartnerStack is likely overkill. Current market comparisons position it as a much more expensive, enterprise-oriented platform. Affitor Documentation

How I'd build the stack

For a growing PLG company, I'd aim for:

Product → Billing → Referral/Affiliate platform → CRM/data warehouse

For example:

Your SaaS
→ Stripe
→ FirstPromoter / Rewardful
→ HubSpot/Salesforce + product analytics
→ warehouse

Then instrument three separate growth programs:

1. Customer referral

• Trigger referral CTA after activation/Aha moment, not immediately after signup.
• Two-sided incentive.
• Reward only after the referred user becomes a legitimate paying customer.
• Consider account credit rather than cash for customers.
• Affiliate

• Individual affiliate links/codes.
• Recurring commission.
• Longer attribution window.
• Manual approval for affiliates initially.
• Separate terms and commission structure.
• Power-user/ambassador

• Invite your highest-NPS/highest-usage customers.
• Give them better rewards or early-access perks.
• Treat this as a curated program rather than an open affiliate network.

The big PLG mistake I'd avoid is treating "referral" and "affiliate" as the same campaign. The people, motivations, economics and fraud risks are different even though the underlying attribution technology can be shared.

My recommendation

If I were choosing for your startup today:

• Stripe + want the simplest launch → Rewardful
• Growing SaaS + want robust customer referrals and affiliates → FirstPromoter
• More complex partner ecosystem → PartnerStack
• Very early and optimizing for minimal tooling/cost → Tolt

I'd lean FirstPromoter for the situation you described because you're explicitly looking to run customer referrals alongside an affiliate program, rather than merely adding affiliate links to your product. Its SaaS-oriented billing/event model makes that combination particularly natural. FirstPromoter

If you tell me your billing stack (Stripe/Paddle/etc.), current ARR, monthly new customers, and whether you want cash vs. account-credit rewards, I can narrow this to a specific recommendation and give you the campaign structure + incentive economics I'd launch with.

The big PLG mistake I'd avoid is treating "referral" and "affiliate" as the same campaign. The people, motivations, economics and fraud risks are different even though the underlying attribution technology can be shared.

My recommendation

If I were choosing for your startup today:

• Stripe + want the simplest launch → Rewardful
• Growing SaaS + want robust customer referrals and affiliates → FirstPromoter
• More complex partner ecosystem → PartnerStack
• Very early and optimizing for minimal tooling/cost → Tolt

I'd lean FirstPromoter for the situation you described because you're explicitly looking to run customer referrals alongside an affiliate program, rather than merely adding affiliate links to your product. Its SaaS-oriented billing/event model makes that combination particularly natural.

For a growing SaaS company with a product-led growth (PLG) model, I’d avoid choosing a generic affiliate tracker first. Your needs are usually two overlapping motions:

1. Customer referral program → existing users invite colleagues/friends and get credits, discounts, cash, upgrades, etc.
2. Affiliate/partner program → creators, consultants, agencies, influencers, and ecosystem partners drive new customers for recurring commissions.

The best tool depends on how much you want those two programs unified. Several platforms now specifically target SaaS referral + affiliate workflows rather than ecommerce-only tracking. Cello Cello

Shortlist for a PLG SaaS startup

My recommendation by stage

If you’re under ~$1M ARR and validating the channel

Start with:

• Rewardful if your billing is primarily Stripe.
• FirstPromoter if you want more sophisticated referral rules.

Focus on:

• “Give $20, get $20” customer referrals
• recurring affiliate commissions (e.g., 20–30% of subscription revenue for 12 months)
• coupon/referral-code tracking
• fraud prevention

If referrals are becoming a core PLG growth loop

Look at:

• Cello

The important difference: the referral experience lives closer to your product. A user can discover, share, and track referrals without leaving your app. That generally fits PLG better than a standalone affiliate dashboard. Cello

If you expect agencies, consultants, or channel partners

Consider:

• PartnerStack

It is more of a partner ecosystem platform than a customer referral tool. It becomes attractive when you have:

• certified partners
• co-selling
• partner managers
• multiple partner tiers

The stack I’d typically build for a PLG SaaS

A practical setup:

• Referral + affiliate engine: FirstPromoter / Rewardful / Cello
• Billing attribution: Stripe Billing, Paddle, Chargebee, etc.
• Product analytics: Amplitude or Mixpanel
• Lifecycle messaging: Customer.io or Braze
• CRM sync: HubSpot or Salesforce

Features I’d require before buying

For SaaS specifically, make sure the platform supports:

• Recurring commission tracking (not just first purchase)
• Rewards triggered after paid conversion, not signup
• Subscription upgrades/downgrades/churn handling
• In-app referral widgets or APIs
• Automated payouts
• Fraud controls
• Attribution that survives cookie restrictions
• Segmenting customers vs affiliates vs partners

A common mistake is using a consumer referral tool for a SaaS product and later discovering it cannot handle subscription revenue events.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), ACV, self-serve vs sales-assisted motion, and whether referrals are customer-only or also influencers/partners, I can narrow this to 2–3 choices.

For a growing SaaS startup with a product-led growth (PLG) model, I’d avoid treating customer referrals and affiliate marketing as the same channel. They overlap, but they usually need different workflows:

• Customer referral program: existing users invite peers → rewards are often credits, upgrades, discounts, cash, or perks.
• Affiliate program: external partners, creators, consultants, communities, and publishers promote you → needs tracking links, recurring commissions, partner portals, payouts, and attribution.

The best software depends on how mature your motion is.

Best-fit tools for a PLG SaaS company

My recommended stack by stage

Early PLG startup (pre-scale)

Use:

• In-product referrals: Cello
• Affiliate tracking: Rewardful or FirstPromoter

Why:

• Fast launch
• Low engineering effort
• Native subscription revenue tracking
• Lets you learn what referral behavior actually works before buying enterprise tooling

Growing SaaS ($1M–$10M ARR range)

Consider:

• FirstPromoter or Tapfiliate for affiliates
• Cello for customer referrals
• Connect events into your CRM/product analytics stack

This gives you:

• customer advocacy loops
• affiliate acquisition
• separate reward structures
• cleaner attribution

Mature B2B SaaS

Look at:

• PartnerStack
• Impact.com
• Everflow

These make more sense when you have:

• hundreds of partners
• agency channels
• reseller motions
• dedicated partner operations

Features I’d prioritize for PLG

Whatever you choose, make sure it supports:

1. Product-triggered referrals

• Trigger referral prompts after activation moments: - user hits usage milestone
• invites teammates
• achieves success outcome
• Recurring revenue attribution

• Track upgrades, downgrades, churn, and renewals—not just first signup. The Digital Merchant
• Fraud controls

• Block: - self-referrals
• duplicate accounts
• coupon abuse
• fake trials
• Flexible rewards

• Customer referrals: - credits
• feature unlocks
• account upgrades
• Affiliates: - % recurring commission
• flat bounty
• tiered payouts
• Data integrations

• Stripe/Paddle
• Segment
• HubSpot/Salesforce
• your product analytics platform

A practical shortlist I’d evaluate first

For most PLG SaaS startups, I’d put these three into a trial:

1. Cello + Rewardful → best “PLG + affiliate” combination
2. Cello + FirstPromoter → better if commissions and partner logic will get complex
3. Tapfiliate alone → if you strongly prefer one system instead of two

The key decision is whether referrals are a core product growth loop (favor an embedded referral tool) or simply a marketing channel (favor affiliate software). For PLG companies, I’d usually make referrals native to the product and keep affiliates separate.

For a growing PLG SaaS, I’d avoid buying a heavyweight partner-management platform too early. You want one system that can handle both customer referrals and affiliates, while connecting attribution to your actual subscription/billing events.

My shortlist

1. firstpromoter.com — my default recommendation

If you're specifically asking for one platform to run both customer referrals and affiliates, I'd start here.

FirstPromoter supports referral programs alongside affiliate/influencer programs, with integrations across billing systems such as Stripe, Paddle, Chargebee, Recurly and Braintree. Its referral functionality can also support two-sided rewards—for example, giving the existing customer $25 and the referred customer 20% off. FirstPromoter FirstPromoter

That's a particularly good match for PLG because you can make the referral event part of the product experience rather than treating referrals as a separate marketing campaign.

I'd choose it if you want:

• Customer-to-customer referrals
• External affiliates/content creators
• Recurring SaaS commissions
• Flexible commission/reward rules
• More billing-provider flexibility
• A system you won't immediately outgrow

2. rewardful.com — best if you're Stripe-first

Rewardful is probably the easiest option if your stack is essentially SaaS + Stripe + affiliates/referrals.

It emphasizes self-service setup and an affiliate portal, and currently supports automated payout administration, tax/KYC workflows and fraud/refund handling. Rewardful

Current market comparisons put its entry point around $49/month, with no transaction fee on the standard offering, although you should verify the live pricing before purchasing. Affitor

I'd pick Rewardful over FirstPromoter when speed and simplicity matter more than sophisticated program management.

3. cello.so — worth a serious look for PLG

Cello is the one I'd investigate specifically because you said product-led growth.

The distinction is important: traditional affiliate software starts with "here's an affiliate link." A PLG referral system ideally starts with:

User gets value → product asks them to invite colleagues/friends → invite converts → reward is automatically triggered.

That makes the referral loop part of the product rather than a marketing campaign bolted onto it.

If your primary goal is turning existing activated users into a referral acquisition channel, Cello deserves to be in the bake-off alongside FirstPromoter.

4. partnerstack.com — don't start here unless you're already big

PartnerStack makes more sense when "affiliate program" is becoming partner ecosystem management: affiliates + agencies + consultants + resellers + referral partners, with a dedicated partnerships team.

It's substantially heavier and more expensive than the self-serve tools; current 2026 comparisons put it around $1,000+/month at the entry end. Affitor Documentation

I'd consider it when you have a genuine partner organization—not simply because you're growing.

What I'd actually build

For your model, I'd structure the programs as two motions on the same underlying platform:

Customer referral

• Existing user gets unique referral link/code
• Referred prospect signs up
• Reward only triggers after activation or first payment
• Optionally reward both sides
• Promote referral inside the product at high-intent moments

Affiliate

• Affiliate gets tracked link
• Commission based on qualified conversion / first payment
• Recurring commission where appropriate
• Separate commission rates by affiliate tier
• Automated fraud/refund/clawback handling
• Affiliate portal and reporting

That distinction matters because you don't necessarily want to pay a customer $100 simply because someone clicked their link and created a free account. FirstPromoter, for example, explicitly supports triggering rewards based on billing events rather than merely signup. FirstPromoter

My recommendation by stage

• Early/growing PLG SaaS + Stripe: Rewardful
• Growing SaaS with serious referral + affiliate ambitions: FirstPromoter
• Referral is primarily an in-product growth loop: Cello
• Large B2B SaaS with affiliates + resellers + partners: PartnerStack

If I were choosing for your company without knowing anything else, I'd shortlist FirstPromoter vs. Cello first. FirstPromoter is the stronger "one system for referrals + affiliates" choice; Cello is the more interesting choice if the core thesis is that your existing users should drive acquisition from inside the product.

If you tell me your billing stack (Stripe/Paddle/etc.), approximate ARR, ACV, and whether your referral reward is cash/credits/discounts, I can narrow this to a specific recommendation and give you a 3-tool implementation/ROI comparison.

If your primary goal is turning existing activated users into a referral acquisition channel, Cello deserves to be in the bake-off alongside FirstPromoter.

4. partnerstack.com — don't start here unless you're already big

PartnerStack makes more sense when "affiliate program" is becoming partner ecosystem management: affiliates + agencies + consultants + resellers + referral partners, with a dedicated partnerships team.

It's substantially heavier and more expensive than the self-serve tools; current 2026 comparisons put it around $1,000+/month at the entry end. docs.affitor.com

I'd consider it when you have a genuine partner organization—not simply because you're growing.

What I'd actually build

For your model, I'd structure the programs as two motions on the same underlying platform:

Customer referral

For a growing PLG SaaS, I’d strongly favor a platform that treats customer referrals as a product/billing event, rather than an ecommerce referral tool.

My shortlist

🥇 My pick: FirstPromoter

For your particular description—growing SaaS + PLG + customer referrals alongside an existing/planned affiliate program—I'd start with FirstPromoter.

It is designed around subscription businesses and can connect referral attribution to billing events. You can, for example, make the referral reward happen only after the referred user becomes a paying customer rather than merely signing up for a free trial. It supports dual-sided rewards, so you can reward both the existing customer and the new customer. FirstPromoter FirstPromoter

That's particularly useful for PLG because you can construct something like:

Invite a teammate/friend → they sign up → they activate → they become paid → both users receive the reward

rather than paying for low-quality signups.

It also lets you embed the referral experience inside your product, so the referral loop can become part of the product rather than a separate marketing microsite. FirstPromoter

It supports Stripe, Chargebee, Paddle, Recurly and Braintree natively, with API options for other billing systems. FirstPromoter

When I'd choose the others

Rewardful — pick this if you're heavily standardized on Stripe and want the fastest, least complicated affiliate/referral implementation. It's particularly attractive when your requirements are straightforward rather than requiring sophisticated partner-program management. Affitor

Tolt — worth evaluating if you want a lightweight, modern affiliate/partner layer without jumping all the way to an enterprise platform. Current comparisons put it around the lower-cost end of the SaaS affiliate market. Affitor

PartnerStack — I'd move here once "affiliate" starts becoming "partner ecosystem": agencies, consultants, technology partners, resellers, co-marketing partners, etc. It's more infrastructure than you need for a simple customer-referral loop.

ReferralCandy — interesting because it now explicitly supports both customer referral and affiliate campaigns in one platform. ReferralCandy Help Center ReferralCandy Help Center But I'd put it behind FirstPromoter for a PLG SaaS because its strongest historical orientation is ecommerce, and its reward model is fundamentally transaction/purchase-oriented. FirstPromoter

How I'd structure your stack

I'd actually avoid treating customer referrals and affiliates as the same program, even if the software is the same:

• Customer referral: existing users → friends/colleagues - Two-sided incentive
• Reward tied to activation or first paid conversion
• Referral CTA embedded in the product
• Personalized referral link
• Affiliate: creators, consultants, publishers, agencies - One-sided commission
• Longer attribution window
• Potential recurring commission
• Application/approval process
• Dedicated affiliate portal

Then have one platform provide the attribution, fraud controls, reward calculations and reporting for both.

For a PLG company, I'd make the most important KPI incremental paid customers / gross profit generated per $1 of referral rewards, not raw referral volume. A program producing 10,000 free signups but few activated accounts can look fantastic inside a referral dashboard while being economically terrible.

Bottom line: I'd trial FirstPromoter first, Rewardful second if you're Stripe-only and want maximum simplicity, and PartnerStack if you expect your affiliate program to evolve into a broader partner ecosystem. FirstPromoter Affitor

If you tell me your billing stack (Stripe/Paddle/etc.), monthly active users, current affiliate setup, and whether your referral reward is cash/credit/free months, I can narrow this to a specific recommendation and suggested referral-program architecture.

Invite a teammate/friend → they sign up → they activate → they become paid → both users receive the reward

rather than paying for low-quality signups.

It also lets you embed the referral experience inside your product, so the referral loop can become part of the product rather than a separate marketing microsite. FirstPromoter

It supports Stripe, Chargebee, Paddle, Recurly and Braintree natively, with API options for other billing systems. FirstPromoter

When I'd choose the others

Rewardful — pick this if you're heavily standardized on Stripe and want the fastest, least complicated affiliate/referral implementation. It's particularly attractive when your requirements are straightforward rather than requiring sophisticated partner-program management. Affitor

Tolt — worth evaluating if you want a lightweight, modern affiliate/partner layer without jumping all the way to an enterprise platform. Current comparisons put it around the lower-cost end of the SaaS affiliate market. Affitor

PartnerStack — I'd move here once "affiliate" starts becoming "partner ecosystem": agencies, consultants, technology partners, resellers, co-marketing partners, etc. It's more infrastructure than you need for a simple customer-referral loop.

ReferralCandy — interesting because it now explicitly supports both customer referral and affiliate campaigns in one platform. help.referralcandy.com help.referralcandy.com But I'd put it behind FirstPromoter for a PLG SaaS because its strongest historical orientation is ecommerce, and its reward model is fundamentally transaction/purchase-oriented.

How I'd structure your stack

I'd actually avoid treating customer referrals and affiliates as the same program, even if the software is the same:

For a growing PLG SaaS, I’d favor a platform that can handle both customer referrals and affiliates against the same subscription/billing data, rather than bolting a consumer-referral tool onto a separate affiliate system.

My shortlist

My pick: FirstPromoter

For your particular model, I would start with FirstPromoter.

The important distinction is that you have two different growth loops:

1. Customer referral loop:

Existing user → shares referral → friend signs up → friend becomes paying customer → both sides receive a reward.

2. Affiliate loop:

Creator/consultant/agency/partner → sends prospects → prospect subscribes → partner earns commission, potentially recurring.

You don't necessarily want these treated as the same program. FirstPromoter lets you run affiliate, referral and influencer programs in parallel, with distinct commission structures while keeping the billing integration centralized. FirstPromoter

For the PLG side specifically, it supports an in-product referral portal, customer-specific referral links, dual-sided rewards and rewards triggered by actual billing events. FirstPromoter

That's a strong fit for a product-led motion because you can make referrals part of the product experience rather than sending customers to a generic affiliate dashboard.

When I'd choose Rewardful instead

I'd pick Rewardful if your priority is:

"We want to get an affiliate/referral program live this week with minimal engineering and operational overhead."

Its Stripe/Paddle integration, campaign model, recurring commissions, coupon tracking, fraud detection and PayPal/Wise payouts make it particularly compelling for a small growth team. Rewardful Rewardful

Rewardful also supports double-sided incentives, so you can use the same infrastructure for something like:

"Give $20, get $20"

while maintaining a different commission structure for affiliates. Rewardful

rewardful.com

firstpromoter.com

How I'd architect it

I'd actually avoid thinking of this as an "affiliate program" alone. Build three tiers of advocacy:

• Customers: simple, double-sided referral reward; optimized for sharing frequency and activation.
• Power users / creators: affiliate-style recurring commission; optimized for revenue.
• Agencies / consultants / strategic partners: higher-touch partner program with customized commissions.

Then measure them separately:

Customer referrals

• % of active users invited
• referral clicks → signup
• signup → activated
• activated → paid
• referred CAC
• incremental revenue per referring customer

Affiliates

• revenue per affiliate
• activation rate of recruited affiliates
• referred pipeline/revenue
• recurring commission as % of revenue
• payback period
• top-affiliate concentration

That separation matters: a referral program is a product-growth loop; an affiliate program is an acquisition channel. Optimizing them with the same KPI can lead you to reward customers far too generously or affiliates far too little.

Bottom line: I'd trial FirstPromoter first, with Rewardful as the strongest alternative, particularly if you're heavily invested in Stripe and want the simplest possible implementation. FirstPromoter's current positioning around running customer referrals and affiliate programs simultaneously is unusually aligned with the model you described. FirstPromoter FirstPromoter

If you tell me your billing stack (Stripe/Paddle/etc.), ACV, free vs. paid model, and whether the referral reward is cash, credit, or discounts, I can narrow this to a specific recommendation and suggested referral/affiliate economics.

rewardful.com

firstpromoter.com

How I'd architect it

I'd actually avoid thinking of this as an "affiliate program" alone. Build three tiers of advocacy:

• Customers: simple, double-sided referral reward; optimized for sharing frequency and activation.
• Power users / creators: affiliate-style recurring commission; optimized for revenue.
• Agencies / consultants / strategic partners: higher-touch partner program with customized commissions.

Then measure them separately:

Customer referrals

• % of active users invited
• referral clicks → signup
• signup → activated
• activated → paid
• referred CAC
• incremental revenue per referring customer

Affiliates

• revenue per affiliate
• activation rate of recruited affiliates
• referred pipeline/revenue
• recurring commission as % of revenue
• payback period
• top-affiliate concentration

That separation matters: a referral program is a product-growth loop; an affiliate program is an acquisition channel. Optimizing them with the same KPI can lead you to reward customers far too generously or affiliates far too little.

Bottom line: I'd trial FirstPromoter first, with Rewardful as the strongest alternative, particularly if you're heavily invested in Stripe and want the simplest possible implementation. FirstPromoter's current positioning around running customer referrals and affiliate programs simultaneously is unusually aligned with the model you described.

For a growing SaaS startup with a product-led growth (PLG) motion, I’d avoid treating referrals and affiliates as two separate systems if possible. Your best setup is usually a platform that can handle:

• Customer referrals (existing users inviting peers)
• Affiliate/partner programs (creators, consultants, agencies, influencers)
• Recurring SaaS commissions
• Stripe/billing attribution
• In-app referral experiences
• Fraud prevention and payout automation

A few strong options:

My shortlist by startup stage

Early PLG SaaS (pre-$1M ARR)

Pick: Rewardful or FirstPromoter

You likely need:

• Stripe integration
• recurring commission tracking
• simple affiliate portal
• referral links/codes
• fast setup

Don’t overbuild the system before you know the channel works.

Growing SaaS ($1M–$10M ARR)

Pick: FirstPromoter, Referral Rock, or Reditus

At this stage, you usually want:

• customer referrals inside the app
• lifecycle-triggered referral prompts
• segmented rewards (power users vs casual users)
• partner tiers
• better attribution reporting

Scaling SaaS ($10M+ ARR or enterprise motion)

Pick: impact.com

You’ll likely need:

• multiple partner types
• contract workflows
• larger affiliate networks
• compliance controls
• deeper analytics

Features I’d prioritize for a PLG company

1. In-product referral prompts

• Trigger after activation moments: - user hits a usage milestone
• invites teammates
• leaves a high NPS score
• upgrades plan
• Two-sided incentives

• Referrer: account credit, cash, upgrades
• New user: free month, discount, bonus features
• Revenue-based rewards

• Pay on activated users or paid conversions, not just signups.
• Recurring attribution

• Important for SaaS because a $100 MRR customer is more valuable than a one-time referral fee.
• Integration with your growth stack

• Stripe/Paddle/Chargebee
• Segment
• HubSpot/Salesforce (if sales-assisted)
• Customer.io/Braze for lifecycle messaging

A practical stack I’d choose

For many PLG SaaS startups:

• Referral + affiliate engine: FirstPromoter
• Product analytics: Amplitude or PostHog
• Lifecycle messaging: Customer.io
• Billing attribution: Stripe

Then add a dedicated partner platform later if partnerships become a major revenue channel.

If you share your ARR stage, pricing model (self-serve vs sales-assisted), billing provider (Stripe/Paddle/etc.), and whether referrals are B2C or B2B, I can narrow this to 2–3 best fits.

For a PLG SaaS startup, I’d usually avoid generic affiliate tools built for influencers/ecommerce and choose software that understands product signups, trials, subscriptions, upgrades, and recurring commissions.

The right stack depends on whether you want one platform for both referrals + affiliates or best-of-breed tools.

Best overall options for SaaS referral + affiliate programs

My shortlist by stage

Seed to Series A SaaS (lean growth team)

Recommended stack:

• Affiliate/referral engine: FirstPromoter or Rewardful
• Product analytics: Amplitude or PostHog
• Lifecycle messaging: Customer.io or Braze

Why:

• You can trigger referral asks based on product milestones: - activated user
• invited teammates
• NPS promoter
• first value moment
• annual upgrade
• renewal

Growth-stage SaaS with a partner motion

Use:

• PartnerStack for agencies, integrations, consultants, and strategic partners
• A dedicated customer referral system for users

Why:
Customer referrals and partner referrals behave differently:

• Customer referral: “Invite a colleague → earn credits/months/free upgrades”
• Affiliate: “Promote us → earn commission”
• Partner: “Sell/implement/resell us → earn revenue share”

Trying to force all three into one workflow usually creates reporting and incentive problems.

Features I would prioritize for PLG

Look for:

1. Subscription-aware rewards

Avoid rewarding just trial signups. Better triggers:

• paid conversion
• retained customer after 30/60/90 days
• expansion revenue
• annual contract value

FirstPromoter specifically positions its SaaS workflows around commissions connected to billing events such as renewals, upgrades, and cancellations. FirstPromoter

2. In-product referral experiences

The highest-performing PLG referrals usually happen inside the product:

• “Invite teammates”
• “Give a month free”
• “Share with your network”
• referral dashboard in-app

3. Flexible incentives

Common SaaS incentives:

• account credit
• free seats
• free months
• cash payouts
• charitable donations
• premium features

4. Fraud controls

Important once money is involved:

• self-referral detection
• duplicate accounts
• coupon abuse
• suspicious traffic

A practical setup I’d choose

For a growing SaaS company:

Customer referral program
→ FirstPromoter or Rewardful
→ Trigger from product events
→ Reward after paid conversion

Affiliate program
→ FirstPromoter initially
→ Move to PartnerStack when you have dozens/hundreds of partners

Data layer
→ Send referral events into your warehouse/product analytics

Lifecycle automation
→ Trigger referral asks after:

• “aha” moment
• high engagement
• positive support interaction
• NPS 9–10 response

My default recommendation

If you are a typical PLG SaaS startup using Stripe:

1. Start with FirstPromoter for both referral + affiliate programs. FirstPromoter
2. Build referral prompts into your product experience.
3. Move partner management to PartnerStack later if agencies/resellers become a major channel.

If you share your stack (Stripe vs Paddle vs Chargebee, B2B vs B2C, ACV, and whether affiliates are creators or customers), I can narrow this to a 2–3 tool shortlist.

My default recommendation

If you are a typical PLG SaaS startup using Stripe:

For a growing PLG SaaS, I’d avoid buying a heavyweight partner-management platform just because you have both referrals and affiliates. You want something that can handle customer referrals + affiliate/creator partners in one attribution and payout layer, while staying easy to embed into your product.

My shortlist

Current 2026 comparisons put FirstPromoter, Rewardful and Tolt in the more approachable SaaS segment, while PartnerStack is aimed much more at multi-type, larger-scale partner programs. Affitor Affitor Documentation

1. I'd start with FirstPromoter

firstpromoter.com

This is probably the closest match to what you're describing.

The important distinction is that FirstPromoter isn't merely an affiliate-link tracker. It explicitly supports customer referral programs, including dual-sided rewards where both the existing customer and referred customer get an incentive. It can run the referral experience inside your product under your branding. FirstPromoter

That makes it particularly interesting for PLG:

Existing user → referral link/code → new signup → activation → paid conversion → reward

At the same time, you can run:

Creator/affiliate → tracked signup → paid conversion → recurring commission

And manage both through the same underlying system.

It also supports billing-event-based commission logic—renewals, upgrades, downgrades, cancellations and reactivations—which matters considerably once you're paying recurring commissions. FirstPromoter

I'd choose this if: you want customer advocacy/referrals to become a real acquisition loop rather than treating referrals as a tiny add-on to your affiliate program.

2. Rewardful if speed and simplicity matter most

rewardful.com

Rewardful is especially compelling if you're on Stripe and want something the growth team can get running quickly without much engineering.

It has native Stripe integration, affiliate/referral tracking, coupon tracking, APIs, automated payouts and fraud/refund handling. Rewardful says its setup can be done in minutes and that it is used by 3,000+ SaaS, tech and AI companies. Rewardful

Independent 2026 comparisons also consistently characterize it as one of the simplest options for Stripe-based SaaS. Affitor Affitor Documentation

I'd choose this if: your priority is "get an affiliate + referral program live this week" rather than building a sophisticated partner operation.

3. Tolt if you want a leaner growth-stage option

Tolt is worth putting into the evaluation if you're primarily looking for a SaaS affiliate infrastructure layer without the breadth of an enterprise PRM.

Current comparisons put it around the same general category as Rewardful/FirstPromoter, with recurring commissions and a straightforward SaaS-oriented model. Affitor Track360

I'd choose this if: you want a simple affiliate program and your customer referral requirements aren't especially complex.

4. Don't jump to PartnerStack yet—unless your definition of "affiliate" is really "partners"

partnerstack.com

PartnerStack becomes much more attractive when you're managing multiple partner motions:

• Affiliates
• Customer referrals
• Agencies
• Resellers
• Technology partners
• Strategic/channel partners

That's a different problem from "we want our users to refer their friends and we want creators to promote us."

Current comparisons put PartnerStack in the mid-market/enterprise category, with substantially more expensive and sales-led implementation than the self-serve SaaS tools. Affitor Documentation Affitor

I'd choose it when: you have a dedicated partnerships function and need partner recruitment, enablement, management and marketplace/distribution—not merely attribution and rewards.

The architecture I'd use for a PLG SaaS

The bigger decision isn't actually the vendor. It's how you structure the programs.

I'd run two programs on one platform:

Customer referral program

Target: existing customers/users

Reward structure:

• Referrer: account credit, cash, or free month
• Referred user: discount/free month
• Trigger reward only after the referred customer reaches a meaningful activation or payment milestone

For example:

Refer a company → they become a paying customer → you both get $25

That's much better than rewarding someone merely for generating a signup, because it aligns the referral loop with actual product value.

Affiliate program

Target: creators, influencers, consultants, newsletter operators, agencies, review sites

Reward structure:

• 20–30% of first-year revenue, or
• recurring revenue share for 6–12 months
• potentially higher tiers based on volume

These partners should generally get cash commissions, not the same incentive as customers.

Keep the attribution infrastructure shared

That's the crucial bit.

You want a single system answering:

Who referred this account, through what mechanism, and what revenue should they receive?

Rather than ending up with:

Referral software + affiliate software + Stripe + spreadsheets + manual finance reconciliation.

My recommendation

If I were making the decision for a growing PLG SaaS today:

🥇 FirstPromoter — best if customer referrals are going to be an important growth loop alongside affiliates.

🥈 Rewardful — best if you want the fastest/cleanest implementation, particularly with Stripe.

🥉 Tolt — worth considering if you want a lean SaaS affiliate stack.

PartnerStack — wait until your program evolves into a genuine multi-channel partner ecosystem.

One particularly important evaluation criterion: don't only test whether the tool tracks the initial referral. Test the entire lifecycle—signup → activation → trial → conversion → upgrade → downgrade → cancellation → refund → renewal. FirstPromoter, for example, explicitly tracks those billing events, which is the kind of depth I'd want before committing. FirstPromoter

If you tell me your billing stack (Stripe/Paddle/etc.), approximate ARR, monthly new signups, and whether the referral reward should be cash/credit/free months, I can narrow this to a 2–3 tool shortlist with estimated costs and the exact program architecture I'd use.

Referral software + affiliate software + Stripe + spreadsheets + manual finance reconciliation.

My recommendation

If I were making the decision for a growing PLG SaaS today:

🥇 FirstPromoter — best if customer referrals are going to be an important growth loop alongside affiliates.

🥈 Rewardful — best if you want the fastest/cleanest implementation, particularly with Stripe.

🥉 Tolt — worth considering if you want a lean SaaS affiliate stack.

PartnerStack — wait until your program evolves into a genuine multi-channel partner ecosystem.

One particularly important evaluation criterion: don't only test whether the tool tracks the initial referral. Test the entire lifecycle—signup → activation → trial → conversion → upgrade → downgrade → cancellation → refund → renewal. FirstPromoter, for example, explicitly tracks those billing events, which is the kind of depth I'd want before committing.

For a PLG SaaS, I’d avoid stitching together one tool for referrals and another for affiliates unless you have a specific reason. Ideally, you want one attribution/commission layer that can handle both customer-to-customer referrals and creator/partner affiliates, while your product and billing system remain the source of truth.

My shortlist

1. FirstPromoter — my pick for your situation

firstpromoter.com is particularly interesting because it now explicitly supports affiliate, customer referral, and influencer programs in the same platform. You can run them simultaneously with separate commission/reward rules and portals while sharing the same billing integration. FirstPromoter FirstPromoter

For a PLG motion, the important piece is its in-product referral experience: customers can get a referral link, share it, and see their rewards inside your product, with dual-sided rewards supported. FirstPromoter

It also ties referrals to actual billing events, which is important for SaaS because you don't want to reward someone merely for generating a signup if that signup never becomes a paying customer. It supports Stripe, Paddle, Chargebee, Recurly and Braintree natively. FirstPromoter FirstPromoter

I'd choose this if: your goal is to make referrals a genuine product growth loop rather than simply running an affiliate program.

2. Rewardful — best if you want to launch quickly

rewardful.com is excellent if your priority is "get an affiliate program live this week with minimal engineering."

It's built specifically around SaaS/subscription businesses and integrates with Stripe and Paddle. It handles link attribution, recurring commissions, upgrades/downgrades, cancellations, refunds and payouts. Rewardful Rewardful Help Center

It can also support customer referral programs and custom rewards, but there's an important distinction: Rewardful's standard affiliate portal is fundamentally monetary-commission oriented. If you want a polished embedded, consumer-style referral experience inside your product—e.g. "Invite 3 teammates → get a month free"—you'll likely need to build that experience yourself using its API/custom-reward approach. Rewardful Help Center

I'd choose this if: your affiliate program is the priority and customer referrals are relatively simple.

3. PartnerStack — when the partner ecosystem becomes strategic

partnerstack.com makes more sense when you're moving toward a substantial B2B partner/channel ecosystem: agencies, consultants, technology partners, resellers, etc.

For an early/mid-stage PLG company, though, I'd generally consider it more infrastructure than you need for a straightforward "refer a friend + affiliate" motion.

What I'd actually implement

I'd structure the programs as two experiences on top of the same underlying attribution system:

Customer referral loop

Existing user → shares referral → prospect signs up → activates → becomes paid → both sides receive reward

For example:

• Referrer: $20 credit
• New customer: $20 credit
• Reward only after the new account reaches your activation/payment threshold
• Prominent referral CTA inside the product
• Automated prompts after the user reaches a "success moment"

Affiliate program

Creator/partner → unique link/code → signup → paid conversion → recurring commission

For example:

• 20–30% recurring commission for 12 months
• Higher tiers for high-volume affiliates
• Coupon + link attribution
• Affiliate portal
• Automated payouts
• Refund/cancellation clawbacks

The key is not treating these as the same behavioral loop. Customers should see referral as a product feature; affiliates should see it as a revenue-generating partnership.

My recommendation

If I were choosing for a growing PLG SaaS today:

🥇 FirstPromoter — best single platform for your particular combination of customer referrals + affiliates. Its ability to run both programs in parallel, including an in-product referral experience, is the biggest differentiator. FirstPromoter FirstPromoter

🥈 Rewardful — choose this instead if you want the fastest, simplest affiliate launch and don't mind building more of the customer-referral UX yourself. Its Stripe/Paddle integration and SaaS-focused tracking make it particularly low-friction. Rewardful Rewardful

🥉 PartnerStack — consider it when partnerships/channel sales become a major acquisition motion rather than simply a referral/affiliate extension.

If you tell me your billing stack (Stripe/Paddle/etc.), approximate MRR, free-to-paid conversion rate, and whether the referral reward is cash/credit/free months, I can narrow this to a specific recommendation and give you the campaign structure, commission rates, and event triggers I'd launch with.

It can also support customer referral programs and custom rewards, but there's an important distinction: Rewardful's standard affiliate portal is fundamentally monetary-commission oriented. If you want a polished embedded, consumer-style referral experience inside your product—e.g. "Invite 3 teammates → get a month free"—you'll likely need to build that experience yourself using its API/custom-reward approach. Rewardful Help Center

I'd choose this if: your affiliate program is the priority and customer referrals are relatively simple.

3. PartnerStack — when the partner ecosystem becomes strategic

partnerstack.com makes more sense when you're moving toward a substantial B2B partner/channel ecosystem: agencies, consultants, technology partners, resellers, etc.

For an early/mid-stage PLG company, though, I'd generally consider it more infrastructure than you need for a straightforward "refer a friend + affiliate" motion.

What I'd actually implement

I'd structure the programs as two experiences on top of the same underlying attribution system:

Customer referral loop

Existing user → shares referral → prospect signs up → activates → becomes paid → both sides receive reward

For example:

• Referrer: $20 credit
• New customer: $20 credit
• Reward only after the new account reaches your activation/payment threshold
• Prominent referral CTA inside the product
• Automated prompts after the user reaches a "success moment"

Affiliate program

Creator/partner → unique link/code → signup → paid conversion → recurring commission

For example:

• 20–30% recurring commission for 12 months
• Higher tiers for high-volume affiliates
• Coupon + link attribution
• Affiliate portal
• Automated payouts
• Refund/cancellation clawbacks

The key is not treating these as the same behavioral loop. Customers should see referral as a product feature; affiliates should see it as a revenue-generating partnership.

My recommendation

If I were choosing for a growing PLG SaaS today:

🥇 FirstPromoter — best single platform for your particular combination of customer referrals + affiliates. Its ability to run both programs in parallel, including an in-product referral experience, is the biggest differentiator.

For a growing SaaS company with a product-led growth (PLG) motion, I’d avoid treating customer referrals and affiliate marketing as two completely separate systems unless you have a strong reason to. The best setup usually combines:

• Customer referral program: existing users invite teammates/friends/customers → reward after activation or paid conversion
• Affiliate program: creators, consultants, agencies, influencers, and communities drive new customers → recurring commissions or bounties

The key is finding software that understands subscription revenue, trials, activation events, recurring commissions, fraud prevention, and your billing stack. LinkJolt Fungies

Shortlist by SaaS stage

Startup Hub Startup Hub## My recommended stack for a PLG SaaS

Option 1: Lean PLG stack (most startups)

Use:

• FirstPromoter for both customer referrals + affiliates
• Your product analytics platform for activation tracking
• Stripe/Paddle/Chargebee integration for revenue attribution

Good if you want:

• one system of record
• referral rewards tied to activated users, not just signups
• recurring affiliate commissions
• minimal engineering work

FirstPromoter### Option 2: Best-of-breed growth stack

Use:

• Customer referral tool → optimized for in-app viral loops
• Affiliate platform → optimized for external partners

Example:

• Referral program inside your app
• Affiliate program managed through PartnerStack or Rewardful

Better when:

• customers and affiliates behave differently
• you have a large user base
• you need separate incentives and reporting

Startup Hub## Features I would prioritize for PLG SaaS

Don’t buy based only on “referral links.” Look for:

• Event-based rewards

• Reward after trial conversion
• Reward after first invoice paid
• Reward after activation milestone
• Recurring commission support

• Affiliates should earn on subscription revenue, not only first payment
• Product embedding

• Referral prompts inside your app
• Users don’t need to leave your product
• Fraud controls

• Block self-referrals
• Detect duplicate accounts
• Delay rewards until revenue is real
• Billing integrations

• Stripe
• Paddle
• Chargebee
• Recurly
• Analytics

• Referral conversion rate
• Activation rate of referred users
• CAC by channel
• LTV of referred customers

Track360 Fungies## What I’d pick for a “typical” growing PLG SaaS

My default recommendation:

1. Under ~$1M ARR: Rewardful or Tolt
2. $1M–$10M ARR with a real partner motion: FirstPromoter or PartnerStack
3. Enterprise ecosystem: Impact.com

For a PLG company specifically, I would optimize the referral reward around activated users or paid conversions, not raw signups. That prevents your program from becoming a source of low-quality trial accounts.

If you share your billing stack (Stripe/Paddle/etc.), ARR stage, B2B vs B2C, and whether referrals are customer-led or partner-led, I can narrow this to 2–3 choices.

For a growing SaaS with PLG, I’d strongly favor a platform that can handle both customer referrals and traditional affiliates, because you’ll want one attribution/reward system rather than stitching together two programs.

My shortlist

1. FirstPromoter — my pick for your situation

firstpromoter.com

This is probably where I'd start.

FirstPromoter explicitly supports affiliate, referral, and influencer programs from the same account, with separate commission rules/portals but shared billing integration. FirstPromoter FirstPromoter

The particularly useful PLG features are:

• Customer referral programs embedded inside your product
• Customers can share referral links and see rewards without leaving your branded experience
• Dual-sided rewards — e.g. "Give $20, Get $20"
• Rewards triggered by actual billing events rather than merely clicks/signups
• Self-referral detection
• Coupon-code attribution
• Automated referral emails
• Milestone/performance bonuses
• Separate affiliate programs alongside customer referrals FirstPromoter FirstPromoter

That combination maps very nicely to a PLG funnel:

User becomes successful → prompt them to refer → referral signs up → referral becomes paying customer → reward both sides.

Meanwhile, your external affiliates can run on a different commission structure in the same system.

2. Rewardful — best if you want extremely fast/simple

rewardful.com

I'd look seriously at Rewardful if your priority is "get this live this week without a bunch of operational overhead."

It's built specifically around SaaS affiliate/referral programs and has particularly strong Stripe integration, including recurring commissions, upgrades, downgrades, cancellations and refunds. Rewardful Rewardful Help Center

It's also capable of customer referral programs through its API, including white-label experiences and rewards such as account credits. Rewardful

I'd choose Rewardful over FirstPromoter if your setup is relatively straightforward and Stripe + affiliate management is the dominant requirement.

3. PartnerStack — when your "affiliate program" is becoming a partner ecosystem

partnerstack.com

PartnerStack is the more heavyweight choice.

It now explicitly supports affiliate, referral, influencer, reseller and co-sell programs side-by-side, with unified tracking and payouts. PartnerStack PartnerStack

The big advantage isn't just tracking referrals. It's that you can eventually build a broader ecosystem around:

• Affiliates
• Customer referrals
• Agencies
• Consultants
• Influencers
• Resellers
• Strategic partners

It also has a large B2B SaaS partner network for recruiting partners. PartnerStack PartnerStack

I'd not start here just because you're growing. I'd start here if you already know that partnerships will become a major revenue channel and you'll need sophisticated partner management.

What I'd actually implement

For a PLG SaaS, I'd separate the programs conceptually even if they're managed by the same platform:

Customer referral program

"Invite a company → they get $X / credit → you get $X / credit after they become a paying customer."

Use this primarily for existing customers and active users.

Affiliate program

"Promote [Product] → earn X% of referred subscription revenue."

Use this for creators, consultants, bloggers, communities, agencies and other people who aren't necessarily customers.

Don't give both groups the same economics. Your existing customers already have product knowledge and a trust relationship with their peers, so a simple two-sided reward can be more compelling than a traditional affiliate commission.

My recommendation

I'd evaluate them in this order:

1. FirstPromoter — best fit if you want customer referrals + affiliates to be first-class PLG growth channels.
2. Rewardful — best if you want maximum simplicity and are heavily Stripe-based.
3. PartnerStack — best if you're building a serious B2B partner ecosystem, not merely an affiliate program.

One important architectural decision: make the referral trigger a meaningful product/billing event, not just signup. For example, reward only after the referred account becomes a paying customer and survives your chosen refund/trial window. FirstPromoter and Rewardful both have SaaS-oriented billing attribution that makes this much easier. FirstPromoter Rewardful

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), ACV, self-serve vs. sales-assisted mix, and whether the referral reward should be cash, credits, or discounts, I can narrow this to a specific recommendation and propose the actual referral/affiliate program structure.

"Invite a company → they get $X / credit → you get $X / credit after they become a paying customer."

Use this primarily for existing customers and active users.

Affiliate program

"Promote [Product] → earn X% of referred subscription revenue."

Use this for creators, consultants, bloggers, communities, agencies and other people who aren't necessarily customers.

Don't give both groups the same economics. Your existing customers already have product knowledge and a trust relationship with their peers, so a simple two-sided reward can be more compelling than a traditional affiliate commission.

My recommendation

I'd evaluate them in this order:

1. FirstPromoter — best fit if you want customer referrals + affiliates to be first-class PLG growth channels.
2. Rewardful — best if you want maximum simplicity and are heavily Stripe-based.
3. PartnerStack — best if you're building a serious B2B partner ecosystem, not merely an affiliate program.

One important architectural decision: make the referral trigger a meaningful product/billing event, not just signup. For example, reward only after the referred account becomes a paying customer and survives your chosen refund/trial window. FirstPromoter and Rewardful both have SaaS-oriented billing attribution that makes this much easier.

For a growing PLG SaaS, I’d avoid stitching together separate “referral software” and “affiliate software” unless you have a very specific reason. Ideally, one system should understand your subscription billing, attribute referrals, handle recurring commissions/rewards, and let you run both customer advocacy and external affiliate campaigns.

My shortlist

1. rewardful.com — my default recommendation

If you're a startup and your billing runs through Stripe or Paddle, I'd start here.

Rewardful is specifically built around SaaS recurring revenue and can run affiliate and customer referral programs from the same platform. It tracks subscriptions, upgrades, downgrades, cancellations, refunds, etc., so your commission economics stay tied to what actually happens to the customer. Rewardful Rewardful

That makes it particularly attractive for PLG because you can have:

• Customer referral: “Invite a teammate/company → both get $20 credit”
• Affiliate: “Send us a new customer → earn 20% recurring commission”
• Influencer/creator: custom campaign with a different commission
• Different commission/reward structures for different customer segments
• Referral links and coupon-code attribution
• Automated payouts

Rewardful says campaigns can be launched quickly with its Stripe integration, and its API gives you room to build a more native referral experience into your product later. Rewardful

I'd pick this if: you're a 5–50 person SaaS team and want to launch without turning referral infrastructure into a product/engineering project.

2. firstpromoter.com — strongest alternative

I'd look very seriously at FirstPromoter if you expect your referral program to become a meaningful growth channel and want more control over reward mechanics.

It supports both affiliate and referral programs and is designed specifically for subscription/SaaS businesses. It supports Stripe, Paddle, Chargebee, Recurly and Braintree, with reward triggers such as first charge, first several charges, or lifetime billing. It also supports two-sided customer rewards, which is particularly useful for PLG. FirstPromoter FirstPromoter Docs

For example, you could configure:

Existing customer gets $50 credit after friend pays → friend gets 20% off first month → affiliate gets 25% of revenue for 12 months.

That's the kind of flexibility I'd want once you're running multiple acquisition experiments.

I'd pick this if: you want more sophisticated campaign configuration and aren't necessarily locked into Stripe.

3. partnerstack.com — when “referral” becomes a partner ecosystem

PartnerStack is the one I'd consider if your definition of partnerships is broader than customer referrals + affiliates.

It supports affiliate, referral and influencer programs together, plus partner onboarding, training, deal management, automated payouts and a partner marketplace. PartnerStack says its network includes 115,000+ active partners. PartnerStack PartnerStack

That's powerful—but probably more platform than you need if you're simply trying to turn your happy customers into advocates.

I'd pick this if: you're heading toward agencies, consultants, resellers, technology partners and affiliates all living inside one partner ecosystem.

4. impact.com — enterprise option

Impact is worth considering once partnership operations become substantial and you need a broader partnership-management platform. It's considerably more enterprise-oriented than I'd recommend for a startup just launching a PLG referral motion. Current comparisons put it in the category of broader partnership platforms rather than lightweight SaaS referral infrastructure. FirstPromoter

What I'd actually do in your position

I'd probably choose Rewardful vs. FirstPromoter, rather than starting with PartnerStack or Impact.

The deciding question is your billing stack:

• Stripe/Paddle + want the fastest launch → Rewardful
• Stripe/Paddle/Chargebee/Recurly/Braintree + more complex reward logic → FirstPromoter
• Affiliate + referrals + agencies/resellers/strategic partners → PartnerStack
• Large, multi-channel partnership organization → Impact

One important distinction: don't design the customer referral program like an affiliate program.

For a PLG SaaS, I'd make the customer program feel like a product feature:

Inside the app
→ “Invite your team / friends”
→ personalized referral link
→ immediate visibility into referrals
→ reward triggered by activated/paid customer, not merely signup
→ account credit, free months, or usage credits

Then use the same underlying attribution infrastructure for:

Affiliate portal
→ unique tracking links/codes
→ recurring commissions
→ approval/fraud controls
→ automated payouts
→ campaign-specific terms

That gives you one measurement system while letting the customer experience and affiliate experience remain very different.

My starting stack: Rewardful + Stripe + your existing product analytics (e.g. Segment/Amplitude/PostHog). I'd only graduate to PartnerStack once the partner-management problem—not the referral-tracking problem—becomes the bottleneck. Rewardful help.rewardful.com

If you tell me your billing stack (Stripe/Paddle/etc.), ACV, free-trial model, and whether referrals are B2B or B2C, I can narrow this to a specific recommendation and propose the actual referral/affiliate economics I'd launch with.

It supports affiliate, referral and influencer programs together, plus partner onboarding, training, deal management, automated payouts and a partner marketplace. PartnerStack says its network includes 115,000+ active partners.

That's powerful—but probably more platform than you need if you're simply trying to turn your happy customers into advocates.

I'd pick this if: you're heading toward agencies, consultants, resellers, technology partners and affiliates all living inside one partner ecosystem.

For a PLG SaaS, I’d strongly favor a platform that can run customer referrals and affiliates in the same system, rather than stitching together a referral app + affiliate platform + custom attribution.

My shortlist

1. FirstPromoter — my first choice

firstpromoter.com

This is probably the closest match to what you're describing. FirstPromoter explicitly supports affiliate, influencer, and customer-referral programs from one platform, with separate reward structures and portals. It also supports dual-sided customer rewards and running multiple campaigns simultaneously. FirstPromoter FirstPromoter

That's particularly attractive for PLG because you can create, for example:

• Customer referral: "Give $20, get $20"
• Power-user referral: "Give your friend 30 days free; get 1 month free"
• Affiliate: 25% recurring commission for content creators
• Influencer: custom CPA or hybrid commission
• Strategic partner: negotiated recurring revenue share

All of those can feed into the same attribution/billing infrastructure rather than becoming separate systems. FirstPromoter says its campaigns can have distinct reward structures, signup pages, dashboards and email sets. FirstPromoter

I'd choose this if referrals are going to become a meaningful acquisition loop inside the product.

2. Rewardful — best if you want to get live very quickly

rewardful.com

Rewardful is particularly compelling if you're on Stripe. It can track recurring subscription commissions and account for upgrades, downgrades, cancellations and refunds. Rewardful Help Center

It also supports customer referral programs with custom rewards, although there's an important distinction: its standard affiliate portal is built around monetary commissions, so a polished in-product customer-referral experience with things like credits/free months may require some custom development. Rewardful Help Center

So I'd rank it:

Affiliate program: ★★★★★
Simple customer referrals: ★★★★☆
Deep native PLG referral experience: ★★★☆☆

The big advantage is operational simplicity: Rewardful says you can launch a Stripe-based program in roughly 15 minutes, with recurring commissions, affiliate portals and automated payouts. Rewardful

3. PartnerStack — when you're building a real partner ecosystem

partnerstack.com

I'd look at PartnerStack if your "affiliate program" is really evolving into a partner channel: agencies, consultants, resellers, technology partners, co-selling, etc.

For a pure PLG customer-referral loop, though, I'd probably consider it more infrastructure than you need initially.

4. Tolt — worth evaluating for a lean affiliate motion

Tolt is another SaaS-oriented option I'd put on the shortlist if the immediate priority is getting affiliates live without adopting a larger partner-management platform.

But if you're explicitly asking for one system to manage both customer referrals and affiliates, I'd put FirstPromoter ahead of it.

What I'd actually do in your position

I'd start with FirstPromoter, assuming its integrations work with your billing/product stack.

The architecture I'd aim for is:

Product → referral CTA → referral link/code → signup → activation → paid conversion → reward

while separately:

Affiliate/creator → affiliate link/code → signup → activation → paid conversion → recurring commission

The key is to optimize around activated customers, not clicks or signups. For a PLG company, paying someone because they generated 500 free accounts can be disastrous if those users never reach your activation event.

I'd therefore make your reward logic something like:

Customer referrals: reward when the referred user becomes a qualified/paid customer.
Affiliates: commission on actual revenue, ideally recurring for some defined period.
Anti-abuse: exclude self-referrals, existing customers, duplicate accounts and refunded/cancelled transactions.

And I'd keep the customer and affiliate programs economically separate even if they're technically in the same platform. Your best customer incentive might be "$25 credit," whereas an affiliate might deserve 20–30% of subscription revenue.

Bottom line:

• FirstPromoter → best match for your combined PLG referral + affiliate strategy.
• Rewardful → choose this if you prioritize very fast, simple affiliate infrastructure, especially on Stripe.
• PartnerStack → choose it when you're building a broader partner ecosystem, not merely referrals.

rewardful.com

Rewardful is particularly compelling if you're on Stripe. It can track recurring subscription commissions and account for upgrades, downgrades, cancellations and refunds. Rewardful Help Center

It also supports customer referral programs with custom rewards, although there's an important distinction: its standard affiliate portal is built around monetary commissions, so a polished in-product customer-referral experience with things like credits/free months may require some custom development. Rewardful Help Center

So I'd rank it:

Affiliate program: ★★★★★
Simple customer referrals: ★★★★☆
Deep native PLG referral experience: ★★★☆☆

The big advantage is operational simplicity: Rewardful says you can launch a Stripe-based program in roughly 15 minutes, with recurring commissions, affiliate portals and automated payouts. Rewardful

3. PartnerStack — when you're building a real partner ecosystem

partnerstack.com

I'd look at PartnerStack if your "affiliate program" is really evolving into a partner channel: agencies, consultants, resellers, technology partners, co-selling, etc.

For a pure PLG customer-referral loop, though, I'd probably consider it more infrastructure than you need initially.

4. Tolt — worth evaluating for a lean affiliate motion

Tolt is another SaaS-oriented option I'd put on the shortlist if the immediate priority is getting affiliates live without adopting a larger partner-management platform.

But if you're explicitly asking for one system to manage both customer referrals and affiliates, I'd put FirstPromoter ahead of it.

What I'd actually do in your position

I'd start with FirstPromoter, assuming its integrations work with your billing/product stack.

The architecture I'd aim for is:

Product → referral CTA → referral link/code → signup → activation → paid conversion → reward

while separately:

Affiliate/creator → affiliate link/code → signup → activation → paid conversion → recurring commission

The key is to optimize around activated customers, not clicks or signups. For a PLG company, paying someone because they generated 500 free accounts can be disastrous if those users never reach your activation event.

I'd therefore make your reward logic something like:

Customer referrals: reward when the referred user becomes a qualified/paid customer.
Affiliates: commission on actual revenue, ideally recurring for some defined period.
Anti-abuse: exclude self-referrals, existing customers, duplicate accounts and refunded/cancelled transactions.

And I'd keep the customer and affiliate programs economically separate even if they're technically in the same platform. Your best customer incentive might be "$25 credit," whereas an affiliate might deserve 20–30% of subscription revenue.

Bottom line:

• FirstPromoter → best match for your combined PLG referral + affiliate strategy.
• Rewardful → choose this if you prioritize very fast, simple affiliate infrastructure, especially on Stripe.
• PartnerStack → choose it when you're building a broader partner ecosystem, not merely referrals.

For a PLG SaaS, I’d avoid stitching together separate “referral software” and “affiliate software” unless your customer referral mechanics are unusually sophisticated. The better setup is one attribution/commission layer that can treat customers, affiliates, creators, and partners as different campaign types.

My shortlist

1. Rewardful — my first choice

rewardful.com is particularly compelling if you're on Stripe or Paddle. It handles referral links/codes, recurring commissions, upgrades/downgrades/cancellations, affiliate portals and payouts. It also supports multiple campaigns, so you can separate the economics of a customer referral program from your traditional affiliate program. Rewardful Rewardful Help Center

The important PLG wrinkle: customer referrals aren't exactly the same thing as affiliates. Rewardful can support customer referral campaigns, including non-monetary rewards, but its documentation says that custom customer-reward experiences require some of your own product/UI development and API integration. Rewardful Help Center

So I'd structure it something like:

• Customer referral: “Give $20, Get $20” / credits / free month
• Affiliate: 20–30% recurring commission
• Power users/ambassadors: separate campaign with different rewards
• Partners/agencies: potentially separate commission rules

That gives you one source of truth for attribution, while your product owns the beautiful in-app referral experience.

2. PartnerStack — if partnerships are becoming a major channel

partnerstack.com is the more heavyweight choice. It explicitly supports referral, affiliate, ambassador and reseller programs, along with campaigns, referral links, commissions and partner management. PartnerStack

I'd pick it over Rewardful if you're expecting to build something like:

customers → affiliates → agencies → implementation partners → resellers

rather than simply:

customers → refer friends + affiliates promote us

The tradeoff is that it is more partner-ecosystem software than a lightweight PLG referral engine.

What I'd actually deploy

For a growing PLG company, I'd start with:

Product + Stripe → Rewardful → CRM/data warehouse

Then make the referral experience native to your product.

For example:

1. User hits “Invite & earn” inside your app.
2. Your app creates/displays their referral link.
3. They can share it via email, Slack, LinkedIn, etc.
4. Referralful/Rewardful handles attribution.
5. Your product handles the customer-facing reward balance.
6. Rewardful separately manages your external affiliate portal and commissions.
7. Your warehouse combines referral + affiliate attribution with product activation, retention and LTV.

This is preferable to sending customers into a generic affiliate portal. For PLG, referrals should feel like a product feature, not a marketing program.

Rewardful also gives you recurring attribution tied to subscription events, which is particularly useful when the value of a referral isn't realized at signup but over months of subscription revenue. Rewardful Help Center

One thing I'd be careful about

Don't optimize the program around number of referrals. Optimize around activated customers and retained revenue.

I'd instrument:

• Referral → signup
• Signup → activated
• Activated → paid
• Paid → retained at 30/90/180 days
• Referred customer LTV
• CAC/payback by referral source
• Reward cost as % of referred ARR
• Fraud/self-referral rate
• Affiliate-sourced vs customer-sourced revenue

Then you can discover, for example, that a $25 customer reward produces far better economics than a $100 reward—or that your “affiliate” channel is actually cannibalizing organic PLG acquisition.

Bottom line: if you're a typical growing SaaS using Stripe, I'd start with Rewardful, build the customer referral UX directly into your product, and use Rewardful's campaign structure to run the customer-referral and affiliate programs alongside each other. If you expect a large, multi-tier partner ecosystem, move up to PartnerStack instead. Rewardful PartnerStack

The tradeoff is that it is more partner-ecosystem software than a lightweight PLG referral engine.

What I'd actually deploy

For a growing PLG company, I'd start with:

Product + Stripe → Rewardful → CRM/data warehouse

Then make the referral experience native to your product.

For example:

For a growing PLG SaaS, I’d avoid buying separate “referral software” and “affiliate software” unless you have a very specific reason. Ideally, one platform should handle both customer referrals and external affiliates, while your product analytics/CRM remains the source of truth for activation and revenue.

My shortlist

1. Rewardful — my default recommendation

For your use case, Rewardful is probably where I'd start.

It explicitly supports both affiliate and customer referral programs, and its SaaS-oriented architecture handles recurring subscriptions, commissions, upgrades/downgrades, cancellations, refunds and multiple campaigns. It also supports coupon-code attribution and an API for more customized implementations. Rewardful Rewardful Help Center

That maps nicely to a PLG model:

• Customer referral: “Give $X, get $X” or account credit
• Power-user referral: recurring revenue share
• Affiliate: 20–30% recurring commission for external creators
• Partner: custom commission structure
• Campaign-specific rewards: different incentives for different cohorts

Rewardful's campaign model is particularly useful because you can define different tracking and reward rules rather than forcing every referrer into one program. Rewardful Help Center

rewardful.com

2. PartnerStack — if “affiliate program” is really becoming a partner channel

I'd choose PartnerStack instead if you're expecting the program to evolve beyond customers and affiliates into:

• agencies
• consultants
• technology partners
• resellers
• ambassadors
• larger B2B referral partners

PartnerStack specifically supports referral, affiliate, ambassador and reseller programs and provides partner-facing campaigns, referral links, commissions and groups. PartnerStack Support

The tradeoff is that it's a much more substantial partner-management platform. For a PLG startup simply trying to turn happy customers into a scalable acquisition channel, I'd probably consider it too much too early.

partnerstack.com

3. FirstPromoter / Tolt — good lean alternatives

I'd put FirstPromoter and Tolt on your evaluation list if Rewardful doesn't fit your billing stack or implementation preferences. Current 2026 comparisons generally position FirstPromoter as a strong option for SaaS billing beyond Stripe/Paddle and Tolt as an attractive choice for teams wanting a straightforward SaaS affiliate platform. Affitor

The important architectural question

I wouldn't think of this as:

“We need an affiliate platform.”

I'd think of it as:

“We need a referral/advocacy layer that can reward different types of people for creating activated customers.”

That's especially important for PLG.

Your ideal flow is something like:

Product → happy/activated customer → referral invitation → referral signup → activation → paid conversion → reward

And separately:

Affiliate/creator → tracking link → signup → activation → paid conversion → recurring commission

The activation event is crucial. You don't want to optimize purely for referred signups, because affiliates can generate cheap registrations that never become good customers.

I'd therefore connect the referral platform to your product analytics/CRM and measure:

• referred signups
• activation rate
• trial → paid conversion
• retained revenue
• expansion revenue
• CAC / acquisition cost
• payback period
• LTV of referred customers
• revenue per referrer
• fraud/self-referrals

What I'd actually buy

If you told me you're a $1M–$20M ARR-ish PLG SaaS on Stripe, I'd start with:

Rewardful + your existing product analytics + CRM

rather than buying a large partner ecosystem platform.

Use Rewardful for attribution, campaigns, commissions and payouts, while keeping your product analytics system responsible for determining whether those referred customers are actually valuable. Rewardful's Stripe integration is specifically designed to follow recurring subscription economics, which is a major advantage for SaaS. Rewardful Help Center Rewardful

Then graduate to PartnerStack/impact.com when the operational complexity of your partner channel—not merely your revenue—justifies it.

One caveat: if you're not on Stripe, tell me what billing stack you use (e.g. Paddle, Chargebee, Recurly, custom billing) and roughly your ARR / number of customers. That could change my recommendation substantially.

That's especially important for PLG.

Your ideal flow is something like:

Product → happy/activated customer → referral invitation → referral signup → activation → paid conversion → reward

And separately:

Affiliate/creator → tracking link → signup → activation → paid conversion → recurring commission

The activation event is crucial. You don't want to optimize purely for referred signups, because affiliates can generate cheap registrations that never become good customers.

I'd therefore connect the referral platform to your product analytics/CRM and measure:

• referred signups
• activation rate
• trial → paid conversion
• retained revenue
• expansion revenue
• CAC / acquisition cost
• payback period
• LTV of referred customers
• revenue per referrer
• fraud/self-referrals

What I'd actually buy

If you told me you're a $1M–$20M ARR-ish PLG SaaS on Stripe, I'd start with:

Rewardful + your existing product analytics + CRM

rather than buying a large partner ecosystem platform.

Use Rewardful for attribution, campaigns, commissions and payouts, while keeping your product analytics system responsible for determining whether those referred customers are actually valuable. Rewardful's Stripe integration is specifically designed to follow recurring subscription economics, which is a major advantage for SaaS.

Then graduate to PartnerStack/impact.com when the operational complexity of your partner channel—not merely your revenue—justifies it.

For a growing PLG SaaS, I’d avoid stitching together separate “referral software” and “affiliate software” unless you have a strong reason to. The better setup is one system that can distinguish customer referrals from external affiliates, while sharing attribution, commissions, payouts, and reporting.

My shortlist

What I'd choose for your situation

If your customers themselves are the primary referral source: I'd investigate Cello first. Its positioning is unusually aligned with PLG: customer advocacy/referrals can live in the product rather than being treated as a conventional affiliate channel. A 2026 comparison specifically identifies it as an all-in-one option for user and affiliate referrals. Cello

If affiliates are currently the bigger channel and you want something you can launch quickly: I'd pick Rewardful. Its Stripe-native integration and relatively lightweight setup make it a particularly good fit for a growing SaaS that doesn't need a full PRM. Rewardful Rewardful

If you expect sophisticated commission rules or billing beyond Stripe/Paddle: I'd lean FirstPromoter. Its broader billing support and more extensive commission/affiliate functionality make it a better long-term candidate than a very lightweight referral tool. Affitor Documentation

I wouldn't start with PartnerStack unless you're already building a genuine partner ecosystem. Current comparisons put it in a substantially different price/complexity category from the self-serve SaaS tools. Affitor Documentation

One architectural decision matters more than the vendor

I'd design the program around two motions in one system:

• Customer referral: existing customer → friend/company → signup → activation → paid conversion → reward
• Affiliate: creator/consultant/agency → prospect → signup → paid conversion → recurring commission

Then give them different economics. For example, customer referrals might get $50–$200 in account credit or a month free, while affiliates receive 20–30% recurring commission.

Most importantly, measure the referral program on incremental activated customers and LTV, not merely clicks or referred signups. In a PLG business, rewarding a customer for generating a low-quality signup can become an expensive acquisition loop.

My practical ranking for you: Cello → Rewardful → FirstPromoter → PartnerStack, assuming you're a typical growing PLG SaaS rather than an enterprise partner ecosystem.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), approximate ARR, average ACV, and whether customer rewards are cash/credits/free months, I can narrow this to the best 1–2 choices and lay out the exact referral + affiliate architecture I'd use.

I wouldn't start with PartnerStack unless you're already building a genuine partner ecosystem. Current comparisons put it in a substantially different price/complexity category from the self-serve SaaS tools.

One architectural decision matters more than the vendor

I'd design the program around two motions in one system:

For a growing PLG SaaS, I’d strongly favor a tool that can run both customer referrals and affiliate campaigns, rather than bolting a referral product onto a separate affiliate platform.

My shortlist

1. FirstPromoter — my first choice

FirstPromoter is particularly well aligned with what you're describing.

It explicitly supports customer referral programs alongside affiliate programs, including dual-sided customer rewards, embedded referral experiences, separate campaigns, coupon tracking, recurring commissions, and billing-event-based attribution. FirstPromoter FirstPromoter

The important part for a PLG company is that you can treat these as different acquisition motions inside one system:

• Customer referral: “Give $20, get $20.”
• Power-user referral: higher reward for customers who generate multiple customers.
• Affiliate: 20–30% recurring commission for creators, consultants, agencies, etc.
• VIP/influencer: custom commission structure.
• Separate campaigns, portals, rewards and reporting for each audience.

FirstPromoter also supports Stripe, Paddle, Chargebee, Recurly and Braintree, with API options for other billing setups. FirstPromoter FirstPromoter Docs

Why I'd pick it: it gives you room to evolve from “customers referring friends” into a more sophisticated partner/referral engine without changing platforms.

firstpromoter.com

2. Rewardful — best if you want to get live quickly

Rewardful is probably the one I'd evaluate alongside FirstPromoter.

It's built specifically around subscription businesses and has particularly strong Stripe integration. It tracks referrals, recurring commissions, upgrades, downgrades, cancellations and refunds, and supports both affiliates and customers as promoters. Rewardful Help Center Rewardful

It's attractive if your requirements are basically:

Stripe + referral links/codes + recurring affiliate commissions + automated payouts + minimal engineering.

Rewardful also lets you create multiple campaigns with different commission/reward structures, which is useful when your customer referral program and affiliate program need different economics. Rewardful Help Center

rewardful.com

3. PartnerStack — consider it when partnerships get serious

PartnerStack makes more sense if you're eventually building a broader partner channel—agencies, resellers, technology partners, consultants, marketplaces, etc.—rather than primarily a customer referral + affiliate engine.

For an early/mid-stage PLG company, I'd generally avoid the additional complexity unless you already know partner-led revenue will become a major part of your GTM.

What I'd actually implement

I'd start with FirstPromoter or Rewardful, and structure the programs separately:

Customer referral program

• Reward both sides.
• Trigger the reward only after the referred customer becomes a paying customer.
• Consider account credit rather than cash for your existing customers.
• Give every eligible customer a referral link inside the product.
• Add referral prompts after activation/Aha moments rather than immediately after signup.

Affiliate program

• Recurring percentage commission, at least initially.
• Different terms for strategic affiliates/creators.
• Coupon + link attribution.
• Automatic commission clawback for refunds/cancellations.
• Separate campaign from customer referrals.

Measurement
Track the two channels independently. I'd want to see:

referred signups → activated users → paid conversions → retained revenue → CAC/payback

rather than simply counting referral clicks or signups.

The key decision

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), approximate monthly revenue, and whether customer rewards should be cash, credits, discounts, or something else, I can narrow this to the best 1–2 tools and the exact campaign structure I'd use.

3. PartnerStack — consider it when partnerships get serious

PartnerStack makes more sense if you're eventually building a broader partner channel—agencies, resellers, technology partners, consultants, marketplaces, etc.—rather than primarily a customer referral + affiliate engine.

For an early/mid-stage PLG company, I'd generally avoid the additional complexity unless you already know partner-led revenue will become a major part of your GTM.

What I'd actually implement

I'd start with FirstPromoter or Rewardful, and structure the programs separately:

Customer referral program

For a PLG SaaS, I’d strongly favor a platform built around subscription/billing events rather than a generic referral tool. Your customer referral motion and affiliate program can share the same attribution and payout infrastructure, while having different incentives and UX.

My shortlist

1. FirstPromoter — my default recommendation

For your situation, this is probably where I'd start.

FirstPromoter explicitly supports customer referrals, affiliate programs and influencer programs in the same platform. Its customer-referral product can live inside your product, with branded referral portals and dual-sided rewards. More importantly for SaaS, attribution can be tied directly to billing events rather than simply "someone clicked a link." firstpromoter.comfirstpromoter.com

That gives you useful PLG mechanics such as:

• Customer: "Give $20, get $20"
• Customer: account credit for every referred account that becomes paid
• Affiliate: 20–30% recurring commission for 12 months
• Power user: higher referral rewards after 5/10/25 successful referrals
• Partner: negotiated commission structure
• Rewards triggered by actual subscription payments, rather than merely trial signup
• Different programs for different customer segments/plans

It supports Stripe, Paddle, Chargebee, Recurly and Braintree, with API options for other billing systems. It also supports recurring commissions, tiered rates, coupon attribution and cancellation/clawback logic. firstpromoter.comfirstpromoter.com

Why I like it for PLG: you can make referrals part of the product experience instead of sending customers to a separate marketing microsite.

2. Rewardful — best if you want simplicity

Rewardful is particularly attractive if your stack is heavily Stripe-centric and you want to get an affiliate/referral program running without a lot of operational overhead. It positions itself specifically as affiliate/referral software for SaaS and has native Stripe integration. www.rewardful.com

I'd pick it over FirstPromoter if your priority is:

"Get a straightforward program live quickly and don't build a giant partner operation."

3. PartnerStack — when affiliates become a serious channel

PartnerStack becomes more interesting once you're building a genuine partner ecosystem—agencies, consultants, technology partners, affiliates, resellers, etc.

I'd consider it if you expect partner-sourced revenue to become a substantial GTM channel rather than simply adding a referral loop to your PLG motion.

The tradeoff is that it can be more infrastructure than you need if you're currently thinking primarily:

"Every happy customer should have a reason and an easy way to refer another customer."

What I would not choose first

ReferralCandy is a capable combined referral/affiliate platform, and it can run referral and affiliate campaigns simultaneously. help.referralcandy.com

But its center of gravity is ecommerce, whereas a SaaS company needs attribution around trials, subscriptions, renewals, upgrades, cancellations and refunds. FirstPromoter's billing-event model is much more naturally aligned with that. firstpromoter.comfirstpromoter.com

The stack I'd build

For a growing PLG SaaS, I'd aim for:

Product → FirstPromoter → Stripe/Paddle → CRM + lifecycle email

Then create two distinct programs inside the same attribution infrastructure:

Customer referral

• Trigger: activated/paid customer
• Placement: in-app referral module
• Incentive: two-sided credit/discount
• Reward: only after referred customer becomes a paying account
• Milestones: progressively better rewards for repeat referrers

Affiliate

• Audience: creators, communities, consultants, agencies, review sites
• Placement: external affiliate portal
• Incentive: recurring cash commission
• Longer attribution window
• Approval/fraud controls
• Different commission rates by partner type

That separation is important. Don't make your customers navigate an "affiliate program." The customer experience should feel like a native product feature: "Invite a team → they get X → you get Y." Your professional affiliates can get the more sophisticated portal, tracking and commission model behind the scenes.

Bottom line: I'd trial FirstPromoter first, Rewardful second, and only move toward PartnerStack if your partner channel is becoming strategically significant. FirstPromoter is the closest match to "PLG SaaS + customer referral loop + serious affiliate program in one system." firstpromoter.comfirstpromoter.com

For a SaaS company with a product-led growth (PLG) motion, I’d prioritize tools that can handle:

• customer referral loops (invite → signup → activation → reward)
• affiliate/creator programs (link tracking → commissions → payouts)
• SaaS billing events (trial conversion, upgrades, churn, renewals)
• integrations with Stripe, Paddle, Chargebee, HubSpot, Segment, etc.
• in-product referral experiences (not just email campaigns)

A few strong options:

My shortlist for a growing PLG SaaS startup

1. FirstPromoter (most likely fit)

• Customer referral program: - “Invite a teammate”
• “Give $20 credit, get $20 credit”
• milestone rewards
• Affiliate program: - creators, consultants, influencers, review sites
• recurring commissions
• SaaS-native attribution: - reward only after paid conversion instead of paying for low-quality trials
• Good match if your growth model is:

free users → activation → paid conversion → referrals

FirstPromoter2. Rewardful (if you are very Stripe-centric)
Choose this if you want:

• quick deployment
• simple affiliate tracking
• minimal operational overhead

3. PartnerStack (once partnerships become strategic)
Choose this when you move beyond affiliates into:

• agencies
• integrations partners
• consultants
• enterprise channel sales

Your likely PLG stack could look like:

• Referral + affiliate engine: FirstPromoter / Rewardful
• Product analytics: Amplitude or PostHog
• Customer data/events: Segment
• Lifecycle messaging: Customer.io or Braze
• Billing: Stripe / Paddle / Chargebee

Features I would insist on before buying

For a PLG SaaS, avoid tools that only track clicks and purchases. Look for:

✅ reward triggers based on activation or paid conversion
✅ recurring commission support
✅ fraud detection/self-referral prevention
✅ API/webhooks for product events
✅ embeddable referral widgets inside your app
✅ customer referral and affiliate programs in the same system
✅ attribution reporting by cohort/LTV

If you’re under roughly $10M ARR, I’d probably start with FirstPromoter or Rewardful rather than a heavier partner platform. If you’re building a marketplace/ecosystem motion, move toward PartnerStack later. FirstPromoter affitor.com

For a growing PLG SaaS, I’d avoid buying a heavyweight partner-management platform too early. You want referral software that can sit close to your product/billing stack, make sharing frictionless inside the app, and still support a more conventional affiliate program.

My shortlist

1. FirstPromoter — my default recommendation

FirstPromoter

This is probably where I'd start if you're serious about running both customer referrals and affiliates from the same system.

It supports referral programs alongside affiliate management, recurring SaaS commissions, and billing integrations including Stripe, Paddle, Chargebee, Recurly and Braintree. It can also trigger rewards based on actual billing events rather than merely a signup. firstpromoter.com

That matters for PLG because your funnel is probably:

invite → signup → trial → activation → paid → expansion → churn

You want rewards tied to meaningful revenue events, not just "someone clicked my link."

I'd use it for:

• Customer referral program
• Affiliate/influencer program
• Recurring revenue commissions
• Dual-sided referral incentives
• Different commission rules for customers vs. professional affiliates
• Centralized attribution/payout management

The current entry point is around $49/month, although pricing and limits vary by tier. firstpromoter.com

2. Rewardful — best if you're Stripe-native

Rewardful

If your stack is basically SaaS + Stripe + product analytics + CRM, I'd seriously consider Rewardful.

It's particularly attractive because of its tight Stripe orientation, recurring commission support and relatively quick implementation. Current comparisons put the entry tier around $49/month. www.rewardful.com

I'd choose Rewardful over FirstPromoter if your priority is:

"Get a good affiliate/referral program live this month without creating a project around it."

I'd choose FirstPromoter if you expect more sophisticated program logic or billing-provider requirements.

3. Cello — particularly interesting for PLG

Cello

This is the one I'd investigate if your existing customers are going to be your primary referral channel.

The distinction is important:

• Affiliate: "Here's my affiliate link; send people to the website."
• PLG referral: "I'm using the product; I invite my colleague/friend directly from inside the product."

Cello is specifically oriented toward in-product SaaS referrals, whereas traditional affiliate software tends to think in terms of links, affiliates and campaigns. Current 2026 comparisons identify Cello as a strong in-product SaaS referral option. thedigitalmerchant.com

So if your growth hypothesis is "our users should naturally invite other users", I'd put Cello high on the list.

The potential downside is that you may end up wanting a separate affiliate system as your external partner program gets sophisticated.

4. Tolt — good lean-team option

Tolt

Tolt is worth considering if you're still relatively lean and primarily want affiliate/referral infrastructure without enterprise complexity.

Current comparisons position it as a Stripe-oriented SaaS option with a relatively simple pricing model. affitor.com

I'd put it behind FirstPromoter/Rewardful for your stated use case, but it's a very reasonable shortlist candidate.

5. PartnerStack — don't start here unless your partner motion is already substantial

PartnerStack

PartnerStack becomes interesting when "affiliate program" evolves into a broader partner ecosystem:

• affiliates
• agencies
• resellers
• technology partners
• referral partners
• deal registration
• partner recruitment
• partner enablement

That's a different problem from simply rewarding your users for inviting people.

Current 2026 comparisons put PartnerStack in the enterprise/multi-type partner-program category, with pricing starting around $1,000/month in some published comparisons. affitor.com

I wouldn't pay for that complexity yet unless you already have a partner team.

What I'd actually build

For a PLG company, I'd structure the programs as two motions with shared infrastructure:

Customer referral

Existing customer → invites friend/colleague → referred user signs up → activates → pays → both receive reward

Affiliate

Creator/consultant/agency → sends prospect → prospect signs up → pays → affiliate receives recurring commission

Then use different economics:

That separation is important. Don't make your customers navigate an "affiliate portal" just to invite a colleague.

My recommendation

If I were making the buying decision for a growing PLG SaaS today:

🥇 FirstPromoter — if you want one system for both programs
🥈 Rewardful — if you're Stripe-first and want maximum simplicity
🥇 Cello — if in-product customer referrals are the strategic centerpiece, potentially paired with an affiliate platform later
🥉 Tolt — if you want a lean, straightforward alternative
Later: PartnerStack — when you're managing a real multi-type partner ecosystem

One important caveat: don't choose based primarily on the affiliate dashboard. For PLG, the crucial technical question is whether the platform can reliably attribute the referral all the way through signup → activation → paid conversion → upgrades/refunds/churn, and expose those events to your product/analytics stack. SaaS affiliate comparisons consistently flag this as a major differentiator. thedigitalmerchant.comwww.rewardful.com

If you tell me your billing stack (Stripe/Paddle/etc.), approximate ARR, monthly signups, and whether the referral reward is cash/credit/free months, I can narrow this to a specific recommendation and proposed referral economics.

For a PLG SaaS, I’d avoid stitching together a generic affiliate tool + a separate referral app unless you have a strong reason to. Your ideal setup is one system that can distinguish customer referrals (your users inviting peers) from affiliate/partner referrals (external promoters), while tying rewards to actual subscription revenue.

My shortlist

1. FirstPromoter — my pick for you.
It explicitly supports affiliate, customer referral, influencer, and sub-affiliate programs in one platform, with separate reward structures and portals. Its customer-referral product supports dual-sided rewards and can be embedded inside your product, which is particularly attractive for a PLG motion. firstpromoter.comfirstpromoter.com

It also connects rewards to billing events, so upgrades, cancellations, renewals, etc. can affect attribution/rewards rather than leaving you reconciling spreadsheets. Native billing integrations include Stripe, Chargebee, Paddle, Recurly, and Braintree. firstpromoter.comfirstpromoter.com

FirstPromoter

2. Rewardful — best if you want extremely fast affiliate deployment.
Rewardful is particularly good for a Stripe-based SaaS: it tracks recurring commissions, upgrades, downgrades, cancellations and refunds automatically. help.rewardful.com

The caveat for your use case is customer referrals. Rewardful can support custom/referral rewards, but if you want a polished in-app customer referral experience, its own documentation says you'll need to build the customer-facing interface yourself. help.rewardful.com

Rewardful

3. PartnerStack — consider it when your partner motion becomes substantial.
PartnerStack is more of a broader partner ecosystem: affiliate, referral, ambassador and reseller programs, plus partner recruitment/network capabilities. support.partnerstack.com

I'd lean toward it if your "affiliate program" is evolving into agencies + integrations + resellers + strategic partners, rather than primarily "customers refer their friends + creators promote us."

PartnerStack

4. Referralful — interesting for a very lean Stripe startup.
It's built specifically around SaaS/Stripe referral and affiliate tracking, with recurring commissions, dual-sided rewards and branded affiliate portals. referralful.com

I'd put it on the evaluation list, but I'd choose FirstPromoter if you're expecting the program to become a meaningful growth channel rather than simply wanting the cheapest/simple starting point.

What I'd actually build

For a PLG company, I'd run two programs in the same platform:

Customer referral

• Trigger: existing customer invites someone
• Reward: e.g. $25–$50 credit to referrer + $25 credit to new customer
• Link lives directly in the product
• Reward only after the referred user becomes a paying customer
• Add milestone bonuses for customers who generate multiple paid referrals

Affiliate

• Trigger: external creator, consultant, agency, or community sends a prospect
• Reward: e.g. 20–30% recurring commission for 12 months
• Dedicated affiliate portal
• Coupon + referral-link attribution
• Different commission tiers for high-volume partners

That separation matters: don't pay your customers like affiliates. A customer referral loop should optimize for activation and virality, while your affiliate program should optimize for incremental acquisition economics.

My recommendation

If you're a growing PLG SaaS today, I'd start with FirstPromoter and make it the system of record for both programs. Its ability to run customer referrals and affiliates in parallel is unusually aligned with what you're describing. firstpromoter.com

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), ACV, free-vs-paid conversion rate, and whether your customers are B2B or B2C, I can narrow this to a specific recommendation and suggest the referral + affiliate economics I'd launch with.

For a PLG SaaS, I’d avoid stitching together a separate customer-referral tool and affiliate tracker unless you have a specific reason to. The best setup is one system that can distinguish customers referring peers from professional affiliates/creators, while attributing both back to subscription revenue.

My shortlist

What I'd pick for your situation

Start with FirstPromoter if you're genuinely growing and want one system to operate both programs. Its current positioning is unusually well aligned with your use case: you can run affiliate + customer referral programs in parallel, with separate rules/portals but the same underlying billing integration. firstpromoter.com

I'd structure it as two campaigns:

• Customer referral: existing customers invite colleagues/friends → give the advocate and new customer a reward, e.g. account credit, free month, or upgrade.
• Affiliate: creators, consultants, publishers and communities → recurring revenue share or fixed CPA.
• VIP/customer advocates: top customers get better rewards or a higher referral tier.
• Shared attribution: make sure upgrades, downgrades, cancellations and refunds affect commissions correctly rather than paying simply for signups.

Rewardful is my choice if you're primarily on Stripe and want the lowest-friction launch. It says you can get an affiliate program live in under 15 minutes and automatically track recurring billing changes. www.rewardful.comsupport.partnerstack.compartnerstack.com

impact.com Advocate becomes more compelling when referral is going to be a serious growth channel in its own right and you need highly configurable incentives, custom events, fraud controls and sophisticated lifecycle management. It explicitly combines customer referrals and affiliate programs in the same platform. impact.com

I wouldn't jump to PartnerStack just for customer referrals. Its value really shows when your definition of "partner" expands into agencies, resellers, co-sell partners and a broader ecosystem. support.partnerstack.compartnerstack.com

One important PLG consideration

Don't optimize the software around referral clicks. Optimize around the activation event that predicts retained revenue.

For example:

Customer shares → prospect signs up → prospect activates → prospect becomes paid → remains paid 30/90 days → reward becomes payable

That lets you avoid giving away expensive rewards for low-quality free accounts, while giving affiliates recurring commissions for customers who actually stick.

My ranking for a growing PLG SaaS:
1. FirstPromoter → best balance
2. Rewardful → fastest/easiest, especially Stripe
3. impact.com Advocate → most sophisticated
4. PartnerStack → when you're building a broader partner ecosystem

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), ARR, approximate customer count, and whether the referral reward is cash/credit/discount, I can narrow this to a specific recommendation and give you the campaign architecture I'd launch.

For a growing PLG SaaS, I’d avoid buying two separate systems if you can. The ideal setup lets a happy customer become a referrer with almost no friction, while still giving you a more traditional affiliate/partner workflow for influencers, consultants, agencies, etc.

My shortlist

1. My default pick: Rewardful

If you're Stripe-based, I'd start here.

Rewardful is specifically built around subscription SaaS: it tracks referrals, associates customers with affiliates, calculates recurring commissions, and adjusts commissions for upgrades, downgrades, cancellations and refunds. It also supports multiple campaigns, so you can have different rules for customers vs. professional affiliates. help.rewardful.com

The particularly relevant feature for you is that Rewardful can be used for customer referral programs as well as conventional affiliates. You can create customers as referrers through its API and expose their referral link inside your own product. help.rewardful.com

That maps nicely to a PLG motion:

Customer hits activation → sees "Invite a teammate/friend" → gets referral link → friend signs up → reward is automatically attributed.

Meanwhile:

Affiliate/creator/agency → applies → gets affiliate portal → promotes product → receives recurring commission.

I'd use separate campaigns for those two audiences rather than trying to make one reward structure fit both.

See Rewardful's current product overview

2. FirstPromoter — probably the strongest alternative

I'd put FirstPromoter at the top of your evaluation list if your referral mechanics are more sophisticated.

It supports native billing integrations with Stripe, Paddle, Chargebee, Recurly and Braintree, and its referral rewards can be triggered by things like the first charge, first several charges, or ongoing/lifetime billing events. firstpromoter.com

That's attractive if you're likely to experiment with things like:

• "$25 credit for every customer you refer"
• Give the referrer and referred customer a reward
• Reward only after the referred customer becomes paid
• Different incentives for different customer segments
• Recurring affiliate commissions
• Multiple affiliate/referral campaigns
• Different economics for self-serve vs. higher-tier customers

For a mature PLG growth team, I'd probably test FirstPromoter vs. Rewardful head-to-head.

3. Tolt — excellent startup option

Tolt is another strong fit. It supports Stripe, Paddle and Chargebee, offers branded affiliate portals, automated PayPal/Wise payouts, percentage or fixed commissions, and two-way billing synchronization for subscriptions, cancellations and refunds. yourmove.tolt.io

I'd favor it if you want something that feels startup-oriented and lightweight, particularly if you don't want a big partnership-management platform.

4. impact.com — when you're getting serious about partnerships

If you're already thinking beyond "affiliate program" toward a unified partnerships channel, impact.com becomes much more interesting.

Its Advocate product now sits directly inside its performance platform, allowing customer referrals and affiliate programs to be managed together. impact.com

I'd consider it when you're adding:

• affiliates
• creators/influencers
• ambassadors
• customer referrals
• strategic partners
• more sophisticated attribution
• larger partner operations

It's probably overkill for an early/mid-stage PLG SaaS, though.

5. PartnerStack — if "affiliate" is really becoming a partner channel

PartnerStack is compelling for B2B SaaS where you're building a broader partner ecosystem. It explicitly supports affiliate, referral and influencer programs alongside partner management, onboarding, commissions and global payouts. partnerstack.com

I'd choose it over the lighter tools if you expect agencies, resellers, integrations, consultants and channel partners to become a meaningful revenue channel—not just people sharing referral links.

What I'd actually build for a PLG SaaS

I'd keep the architecture surprisingly simple:

Your product
→ referral experience embedded in the customer dashboard

Rewardful / FirstPromoter / Tolt
→ attribution + campaign rules + commissions + affiliate portal

Stripe
→ subscription/billing events

Your CRM / product analytics
→ segment customers and measure downstream LTV

Lifecycle email/product messaging
→ prompt customers to refer at the right moments

The important distinction is that the referral experience should live inside your product, not on a separate generic referral website.

For example:

🎁 Give $20, Get $20
Invite a friend to try Acme. When they become a paying customer, you both get $20.

Then have a separate:

Partner Program
Earn 20% recurring commission by referring customers to Acme.

Both can ultimately feed the same attribution infrastructure, but the UX, incentives and messaging should be different.

My recommendation by stage

• Early/growing PLG + Stripe: Rewardful
• More complex referral experimentation: FirstPromoter
• Startup-friendly alternative: Tolt
• Large multi-channel partnership strategy: impact.com
• B2B SaaS channel/partner ecosystem: PartnerStack

If I were making the buying decision today, I'd run a 2-week bakeoff between Rewardful and FirstPromoter. The deciding question wouldn't be "which has more features?" It would be which one lets your product team launch a double-sided customer referral loop without engineering it from scratch, while still giving marketing a serious affiliate program.

For a PLG SaaS, I’d strongly favor one platform that can handle both customer referrals and affiliates, rather than bolting a referral tool onto a separate affiliate platform.

My shortlist

1. FirstPromoter — my pick for you

FirstPromoter

This is probably the closest match to what you're describing. It explicitly supports affiliate, referral, and influencer programs in parallel, with separate commission rules and portals while sharing the same billing integration. firstpromoter.comfirstpromoter.com

The particularly useful PLG features are:

• Put a referral experience inside your app, so customers can share their link and see rewards without leaving your product.
• Dual-sided rewards—e.g. "Give $20, Get $20."
• Trigger rewards from actual billing events rather than merely signups.
• Track upgrades, cancellations and refunds.
• Coupon-code attribution for referrals that happen through Slack, communities, email, etc.
• Performance bonuses for customers who hit referral milestones.
• Run your affiliate program alongside the customer referral program.
• Built-in emails and segmentation for nudging customers who haven't referred yet. firstpromoter.com

That's a very natural fit for a PLG motion: identify happy users → expose referral CTA in-product → make sharing frictionless → automatically reward the advocate.

2. Rewardful — best if you want simplicity

Rewardful

I'd choose Rewardful if your stack is heavily Stripe-based and your priority is getting an affiliate/referral program live quickly with minimal operational overhead.

It handles recurring SaaS commissions, upgrades, downgrades, cancellations, coupons, affiliate segmentation, payouts and customizable referral portals. www.rewardful.com

It's especially attractive if you have a relatively straightforward model such as:

Customer refers someone → both get $X credit
Affiliate refers customer → affiliate gets 20% recurring commission

Rewardful lets you create separate campaigns and commission structures, so you don't necessarily need separate software. help.rewardful.com

3. PartnerStack — if "affiliate" really means a broader partner ecosystem

PartnerStack

I'd consider this when your affiliate program is evolving toward agencies, consultants, technology partners, resellers and other B2B partners, rather than primarily customers and content affiliates.

It's more ecosystem/partner-management oriented, and consequently can be heavier than you need for a PLG referral loop.

What I'd actually implement

For a growing PLG SaaS, I'd structure it as two programs on one platform:

Customer referral program

• Audience: existing activated customers
• Reward: ideally both-sided
• Trigger: referred customer becomes a paying customer
• Reward: account credit, free month, usage credits, or cash
• Distribution: prominent in-app referral widget + post-NPS/promoter prompts
• Goal: increase viral coefficient and reduce CAC

Affiliate program

• Audience: creators, consultants, influencers, communities, customers who want larger payouts
• Reward: recurring % or fixed bounty
• Different landing page and terms
• Dedicated affiliate portal/assets
• Longer attribution window
• More rigorous fraud/commission controls

The important thing is not to treat your customers like affiliates. The psychology and economics are different. A customer referral should feel like a product feature ("Invite your team/friends and get $20"), while an affiliate program should feel like a professional revenue partnership.

My recommendation

Start with FirstPromoter if you want the strongest combination of in-product referrals + affiliates + SaaS billing automation. Its current feature set is unusually well aligned with running both programs simultaneously. firstpromoter.comfirstpromoter.com

Choose Rewardful instead if your main objective is "get our Stripe affiliate program running this week with minimal complexity." www.rewardful.com

I would not buy two separate tools initially. You'll otherwise end up reconciling attribution, customer status, commissions, refunds and payouts across two systems—the exact operational mess these platforms are intended to eliminate.

If you tell me your billing stack (Stripe/Chargebee/Paddle/etc.), monthly active users, ACV/ARPU, and whether referrals are cash vs. credits, I can narrow this down to the best 1–2 options and suggest the actual referral/affiliate incentive structure.

For a PLG SaaS, I’d strongly favor a referral/affiliate platform that can treat existing customers as referrers rather than buying one tool for affiliates and another for customer referrals.

My shortlist

I'd probably pick FirstPromoter for your situation

The important distinction is customer referral ≠ affiliate marketing.

For example, you might want:

• Customer → customer: "Give $20, get $20"
• Power user → customer: "Give 1 free month, get 1 free month"
• Creator/affiliate → customer: 25% recurring commission
• Agency/partner → customer: 30% recurring commission
• Different rewards based on customer segment or acquisition channel.

FirstPromoter lets you run these as separate campaigns and supports rewards for both the referrer and referred customer. It also lets you embed the referral experience inside your SaaS, which is particularly nice for a PLG motion. firstpromoter.com

It also tracks subscription lifecycle events—including renewals, upgrades, downgrades, cancellations and reactivations—rather than treating the initial conversion as the entire attribution problem. firstpromoter.comfirstpromoter.com

When I'd choose Rewardful instead

If your priority is "get this live this week with minimal engineering", Rewardful is compelling. Its Stripe integration is designed for a very quick setup, and it supports both affiliate and customer-referral use cases in the same system. www.rewardful.com

I'd lean Rewardful if:

• you're Stripe-based;
• your referral mechanics are relatively straightforward;
• you want recurring affiliate commissions;
• marketing, rather than engineering, will own the program;
• you don't need a sophisticated partner ecosystem yet.

What I'd not do

I wouldn't start with something like a heavyweight enterprise partner-management platform just because you have an affiliate program.

For a PLG company, I'd first optimize the loop:

Activated customer → referral prompt → referred signup → activation → paid conversion → reward → repeat referrals

The software should make that loop measurable and automatic. Your analytics/product stack should then tell you which customers are worth prompting, e.g. customers who have reached an activation milestone, have high product engagement, or have given an NPS/CSAT signal.

Bottom line:
FirstPromoter is my pick if you want one system to grow into a serious customer-referral + affiliate engine. Rewardful is my pick if speed and simplicity matter most. PartnerStack becomes more attractive when "partners" evolve into a substantial acquisition/channel business.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), ACV, current customer count, and whether referrals should be cash, credits, discounts, or free months, I can narrow this to a specific recommendation and suggested program structure.

For a PLG SaaS, I’d avoid buying separate “referral software” and “affiliate software” unless there’s a compelling reason. The ideal setup lets you treat customers, affiliates, influencers, and partners as different program types on the same attribution/reward infrastructure.

My shortlist

1. Cello — my first choice for a genuinely PLG motion

Cello is particularly interesting because it puts the referral experience inside your product, rather than sending customers to a separate referral portal. Its Web SDK supports embedded sharing, referral links, rewards and contextual prompts. cello.so

That maps nicely to PLG:

User reaches activation → sees “Invite a teammate/friend” → shares → referred user signs up → conversion is attributed → reward is automatically issued.

Cello also supports partner referrals, APIs/webhooks and automated payouts, so you can use the same underlying infrastructure as the program matures. docs.cello.so

I'd pick Cello if your priority is: making referrals a product growth loop, not merely running an affiliate channel.

2. FirstPromoter — strongest single-platform option

FirstPromoter is probably the best choice if you want one operational system for both customer referrals and a traditional affiliate program.

It supports separate rewards for the referrer and referred customer, with rewards triggered by actual billing events rather than merely signup. You can, for example:

• Give the referred customer 20% off their first month
• Give the existing customer $25 of account credit
• Pay affiliates 25% recurring commission
• Trigger rewards only after the first successful payment
• Handle upgrades, refunds and cancellations

Its current SaaS offering explicitly supports both customer referrals and affiliate programs. firstpromoter.com

It also supports Stripe, Paddle, Chargebee, Recurly and Braintree, which makes it attractive if your billing infrastructure isn't purely Stripe. firstpromoter.com

I'd pick FirstPromoter if: you're growing quickly and expect your reward logic, affiliate tiers and billing scenarios to get increasingly sophisticated.

3. Rewardful — best “get it live this week” option

Rewardful is the one I'd choose if you're on Stripe and want minimal implementation overhead.

It can track referred visitors, leads and conversions and automatically adjust commissions for upgrades, downgrades, trials, cancellations and refunds. help.rewardful.com

The current entry pricing is $49/month, with higher tiers based on affiliate-generated revenue; it doesn't charge a transaction fee. www.rewardful.com

The tradeoff is that it's more affiliate-program-centric than Cello: excellent for giving customers affiliate links, but less compelling if you want referrals to become a deeply embedded part of the product UX.

4. PartnerStack — don't start here unless you're already building a partner ecosystem

PartnerStack becomes much more compelling when “affiliate” starts turning into agencies + resellers + referral partners + technology partners + affiliates.

It's considerably more heavyweight and expensive than the SaaS-native options, though. Current comparisons put it in roughly the $1K+/month category, versus ~$49–$99/month for the lightweight SaaS tools. affitor.com

I'd therefore not make PartnerStack your default just because you're growing. Buy it when the complexity of your partner ecosystem actually warrants it.

What I'd do in your shoes

If you're a growing PLG SaaS, I'd narrow it to:

Cello vs. FirstPromoter.

Choose Cello if the core objective is:

“Turn our existing users into a scalable acquisition loop.”

Choose FirstPromoter if the core objective is:

“Build one serious referral + affiliate operation with increasingly sophisticated commission/reward rules.”

Choose Rewardful instead if you're Stripe-based and your priority is simply:

“Get a reliable affiliate/referral program live with almost no engineering.”

One important architectural decision

Don't create two unrelated programs with different attribution logic.

I'd structure it as:

Customer referral

• Existing customer gets a unique referral link
• New customer gets an incentive
• Existing customer gets credit/cash/free months
• Reward only fires after the referred account reaches your chosen activation/payment event

Affiliate

• Affiliate gets a separate partner link
• Recurring revenue share
• Different commission rules
• Longer attribution window
• Manual approval

Shared underneath: one customer identity, attribution model, conversion events, fraud rules and revenue data.

That's particularly important for PLG because the valuable event isn't necessarily “signup.” It might be activated workspace → invited teammate → paid conversion → retained for 30 days. The platforms differ substantially in how deeply you can model that journey. Cello is especially interesting here because its referral experience and tracking can live directly in the application. docs.cello.so

Bottom line: Cello for product-led referral growth, FirstPromoter for the most flexible combined referral + affiliate operation, Rewardful for the fastest Stripe-native launch, and PartnerStack only when you have a true multi-type partner ecosystem.

For a PLG SaaS, I’d avoid stitching together a generic referral tool + affiliate tracker unless you have a specific reason. You want one system to handle attribution, recurring subscription revenue, commissions, payouts, and ideally customer referrals.

My shortlist

What I'd choose for your situation

If you're a growing PLG startup and both motions are strategically important: start with PartnerStack if you expect the partner channel to become a major acquisition engine.

The particularly relevant capability is that PartnerStack explicitly supports affiliate, referral, and influencer programs side-by-side, with unified tracking and payouts. partnerstack.com It also has a marketplace for recruiting B2B SaaS partners, which becomes valuable once you've exhausted your existing customer base and want partners to discover you. partnerstack.com

If you're still relatively lean and primarily want to turn happy customers into referrers while running a conventional affiliate program, I'd start with Rewardful or FirstPromoter instead. You can get the machinery running without adopting a full partner-management platform.

One important distinction

I'd design the two programs differently even if they're managed in the same software:

Customer referral

• Existing customer → invites colleague/friend
• Reward both sides where appropriate
• Optimize for product activation/conversion
• Trigger referral prompts from inside the product
• Attribute the referred account through signup → activation → paid conversion

Affiliate

• Creator, consultant, agency, publisher, etc. → sends prospects
• Usually commission the partner rather than discounting the buyer
• Support recurring commissions if you have subscription revenue
• Give partners assets, links, reporting and onboarding
• Add fraud/self-referral controls

For a PLG company, don't make the mistake of treating every customer referral like an affiliate relationship. Your product should generate the referral loop naturally at moments of value—e.g. after a successful collaboration, invite, milestone, or upgrade—while the affiliate program is a more deliberate external acquisition channel.

One other consideration: PartnerStack currently positions itself specifically around recurring SaaS revenue, including subscription renewals and expansion revenue, and supports connections to billing systems such as Stripe and Chargebee. partnerstack.compartnerstack.com

My practical stack recommendation:

• Early/mid-stage PLG: Rewardful + your existing product analytics/CRM
• Growing into a serious partner channel: PartnerStack as the system of record
• Enterprise-scale ecosystem: PartnerStack or impact.com, depending on how broad/complex your partner ecosystem becomes

If you tell me your ARR, monthly new customers, Stripe/Paddle/other billing setup, and whether the referral program is B2B customer-to-customer or consumer-style, I can narrow this to a specific recommendation and architecture.

For a growing PLG SaaS, I’d avoid buying separate “referral software” and “affiliate software” unless the programs are operationally very different. The best setup is one platform that can handle customer referrals + affiliates, subscription attribution, recurring commissions/rewards, and automated payouts.

My shortlist

What I'd choose for your situation

Start with FirstPromoter if your goal is to make referrals a genuine part of the PLG product experience.

It has a particularly good fit for the model you're describing because you can have:

• Customer referral program: “Give $20, get $20” or credits/free months.
• Affiliate program: e.g. 20–30% recurring commission for creators, consultants, communities, etc.
• Different reward rules for each audience.
• Rewards tied to an actual billing event, rather than paying simply because someone created an account.
• One dashboard for attribution, commissions, referrals, and payouts.
• A referral experience that can be embedded/branded inside your product. firstpromoter.com

That's important for PLG: your customer referral loop should feel like a product feature, not like an affiliate program bolted onto your marketing site.

How I'd structure the two programs

I'd actually run two campaigns on the same platform:

1. Customer referral

Existing customer → invites colleague/friend → new account → activation/payment → both receive reward

For example:

Refer a team → They get 20% off → You get $25 account credit

I'd make the reward contingent on a meaningful event—usually conversion to paid or surviving the initial refund/churn window. FirstPromoter explicitly supports billing-event triggers such as first charge, subsequent charges, or lifetime billing. firstpromoter.com

2. Affiliate

Creator/consultant/community → prospect → trial → paid subscription → recurring commission

Here I'd use something like 20% recurring for 12 months rather than the same incentive as customers.

The distinction matters: customers are incentivized to recommend a product they already love; affiliates are incentivized to acquire customers professionally. You don't necessarily want to pay them using the same economics.

One thing I'd not do yet

I wouldn't jump straight to PartnerStack just because you're a SaaS company.

It's powerful, but there's a meaningful difference between:

“We need to run customer referrals and an affiliate program.”

and

“We need a full partner ecosystem with agencies, resellers, integration partners, recruitment, partner management, and a large partner marketplace.”

For the first case, a SaaS-native tool is usually much simpler. Recent comparisons similarly position PartnerStack more toward later-stage partner programs, while Rewardful/FirstPromoter/Tolt are better suited to earlier SaaS programs. www.rewardful.com

My ranking for you

If I were making the buying decision:

1. 🥇 FirstPromoter — best balance of customer referrals + affiliates + SaaS billing
2. 🥈 Rewardful — particularly attractive if you're deeply integrated with Stripe and want very fast implementation
3. 🥉 Tolt — lean/simple option
4. PartnerStack — graduate to this when partner complexity warrants it
5. Referralful — worth testing if minimizing upfront software cost is a priority

The bigger strategic question isn't actually the software—it's how your referral loop should connect to your PLG funnel. I'd instrument invite → referred signup → activation → paid conversion → retained customer → reward, rather than optimizing simply for referral clicks/signups.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), ACV or typical monthly price, and roughly how many customers/affiliates you have, I can narrow this to the best 2–3 options and compare their current pricing, integrations, attribution, payouts, and referral UX.

For a PLG SaaS startup, I’d avoid buying separate tools for “customer referrals” and “affiliates” unless you have a strong reason to. The best setup is usually one platform that can distinguish customer advocates from professional affiliates, while tying rewards to actual subscription revenue.

My shortlist

1. Rewardful — my default recommendation

Rewardful is particularly attractive if you're Stripe-based and want to launch quickly. It tracks affiliate conversions, recurring commissions, upgrades/downgrades/cancellations, and payouts; it also supports multiple campaigns and coupon-code attribution. help.rewardful.com

The important bit for PLG is that you can use essentially the same infrastructure for:

• Customer referral: “Give $25, get $25”
• Power user referral: “Give a month free, get a month free”
• Affiliate: 20% recurring commission for 12 months
• Influencer/creator: custom commission
• Partner: higher-tier commission

So you don't need to build a referral engine separately from your affiliate engine.

urlRewardful's SaaS referral/affiliate featuresturn0search4

I'd choose this if: you're early-to-mid stage, want something your growth team can operate without engineering, and your billing stack is Stripe.

2. FirstPromoter — best if you want more control

urlFirstPromoterturn0search1 is probably the closest alternative I'd evaluate seriously.

Its referral product is explicitly designed for subscription businesses: you can trigger rewards based on billing events and use cash, free months, points, credits, or coupons. It also supports putting the referral experience directly inside your SaaS product. firstpromoter.compartnerstack.compartnerstack.com

That's particularly interesting for a PLG motion because you could make the referral program part of the product itself rather than sending users to a separate marketing site.

It also has flexible affiliate commissions, including percentage, flat, recurring, lifetime and tiered structures. firstpromoter.com

I'd choose this over Rewardful if: your referral mechanics are becoming sophisticated or you want a highly branded, embedded referral experience.

3. PartnerStack — when the affiliate program becomes a real channel

urlPartnerStackturn0search13 is the heavyweight option.

It's built specifically around B2B SaaS partnerships and supports affiliate, referral, reseller and broader partner programs. It also has a marketplace that can help you recruit partners, rather than simply giving you software to manage partners you've already recruited. partnerstack.com

That's the major distinction:

Rewardful / FirstPromoter:

“We have customers and affiliates; help us run the program.”

PartnerStack:

“Partnerships are becoming a significant acquisition channel; help us build an ecosystem.”

PartnerStack currently positions its platform around hundreds of B2B companies and a large active partner marketplace. partnerstack.com

I'd probably not start here unless you already have meaningful partner volume or a dedicated partnerships function.

What I'd build for your PLG model

I'd structure the program as two campaigns on one underlying platform:

Customer referral

• Existing customer shares referral link
• Friend gets, say, 20–30% off for 3 months
• Referrer gets $25 credit / free month after the friend becomes a paying customer
• Reward only triggers after successful payment
• Prominent referral CTA inside the product

Affiliate

• External creator, consultant, agency, newsletter, etc.
• 20–30% recurring commission for 12 months
• Separate affiliate terms and payout rules
• Coupon + link attribution
• Affiliate portal with creative assets

That separation is important. Your best customer shouldn't necessarily receive the same incentive as a professional affiliate.

The stack I'd pick

If you're under ~50 active affiliates:
→ Rewardful first.

If referrals are a core product experience and you want extensive customization:
→ FirstPromoter.

If you're building a serious B2B partner ecosystem:
→ PartnerStack.

One other consideration: don't optimize for the software's ability to create links; optimize for activation. Community discussions around SaaS affiliate programs repeatedly point out that having hundreds of registered affiliates doesn't mean much if very few actually send a referral. www.reddit.com

For a PLG company, I'd therefore put considerably more effort into getting existing customers to make their first referral than into building an elaborate affiliate portal.

If you tell me your billing stack (Stripe/Paddle/etc.), ACV, current customer count, and approximate affiliate volume, I can narrow this down to a specific recommendation and proposed referral/commission structure.

For a growing PLG SaaS, I’d avoid buying a heavyweight affiliate platform too early. The key is to choose something that can handle both customer-to-customer referrals and affiliates, while tying rewards to actual subscription revenue.

My shortlist

What I'd choose in your situation

Start with FirstPromoter if your goal is:

"Every happy customer should be able to refer another customer, while creators/affiliates can run a more traditional commission-based program."

That's a particularly good match for PLG because you can make the customer referral experience part of the product, rather than treating referrals as a separate marketing website. FirstPromoter supports rewards triggered by actual billing events, including options such as a first charge or subsequent subscription periods. firstpromoter.com

I'd structure the programs separately:

1. Customer referral

• Existing customer gets, say, 1 free month / account credit
• New customer gets 1 free month or onboarding credit
• Reward only triggers after the referred user becomes a paying customer
• Referral CTA appears inside the product at moments of high satisfaction

2. Affiliate program

• 20–30% recurring commission for 12 months, for example
• Separate landing page/application
• Affiliate gets links, coupons, assets and reporting
• Different commission tiers for high-performing affiliates

This distinction matters: customers are motivated by product value; affiliates are motivated by cash compensation. I wouldn't force both groups into exactly the same incentive structure.

When I'd jump straight to PartnerStack

If "growing" means you're already building a meaningful partner/channel organization—agencies, consultants, influencers, affiliates, technology partners, resellers, etc.—I'd seriously consider PartnerStack from the beginning.

It can run affiliate and referral programs side-by-side, automate commissions/payouts, provide onboarding and training, and give you access to its B2B partner network. partnerstack.com Its current SMB offering starts at $6,000/year, so it's a very different economic proposition from the ~$50–$100/month SaaS-focused tools. partnerstack.com

My decision rule

• <$5–10k/month partner/referral revenue: FirstPromoter or Rewardful
• Want the simplest Stripe implementation: Rewardful
• Want sophisticated customer + affiliate referral mechanics: FirstPromoter
• Already building a multi-channel partner ecosystem: PartnerStack
• Expecting agencies/resellers/co-sell to become major channels: PartnerStack sooner rather than later

One other important point: don't optimize for affiliate software features alone. In a PLG business, the bigger opportunity is often making referral generation a product mechanic—e.g. prompting users to refer immediately after an "aha" event, successful collaboration, or measurable outcome. The software should make that easy to track and reward, rather than being the strategy itself.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), ACV, free-trial/freemium model, and approximate customer/affiliate volume, I can narrow this to a specific recommendation and give you a FirstPromoter vs Rewardful vs PartnerStack architecture + estimated annual cost.

For a growing SaaS startup with a product-led growth (PLG) motion, I’d avoid treating referrals and affiliates as the same program. They usually have different mechanics:

• Customer referral program: existing users invite peers → reward account credit, upgrades, cash, perks
• Affiliate program: creators, consultants, agencies, influencers, communities → track commissions, payouts, partner relationships

The best stack depends on your stage and how sophisticated you want to get.

www.rewardful.comtoolradar.dev

My typical PLG SaaS recommendations

If you’re pre-$5M ARR / still proving the channel

• Affiliate: Rewardful or FirstPromoter
• Customer referrals: build a simple in-product referral flow first (invite → reward → track activation), then add dedicated software once volume justifies it

If you’re scaling and have a real partner motion

• Use PartnerStack as the partner operating system
• Connect it with your CRM, billing system, product analytics, and lifecycle marketing tools

If referrals are a core PLG growth loop
Consider a dedicated referral layer that integrates with your product:

• trigger referral prompts after activation milestones
• reward successful conversions, not just invites
• personalize offers by customer segment
• track referred user activation, retention, and expansion revenue

A strong SaaS growth stack usually looks like:

• Product analytics: Amplitude / Mixpanel
• CRM + lifecycle: HubSpot / Salesforce
• Affiliate + partners: Rewardful → PartnerStack as you scale
• Customer referrals: referral tool or native product workflow
• Automation: Zapier / native integrations

What I’d optimize for in your evaluation

1. Recurring revenue attribution (upgrades, downgrades, churn)
2. Native billing integration (Stripe/Paddle/etc.)
3. In-product referral triggers
4. Fraud prevention
5. Partner onboarding experience
6. Cohort reporting: referred users → activation → retention → expansion

For most PLG SaaS startups, I’d start with Rewardful + a lightweight in-product referral loop, then graduate to PartnerStack when partner management becomes a growth channel rather than a marketing experiment. www.rewardful.comtoolradar.dev

If you share your ARR stage, billing stack (Stripe/Paddle/etc.), B2B vs B2C, and whether affiliates are already recruited or you need partner discovery, I can narrow this to a 2–3 tool shortlist.

For a growing SaaS company with PLG, I’d avoid buying two separate systems if you can help it. Ideally, the same platform should handle customer referrals + affiliate/creator referrals, while tying rewards to actual subscription revenue rather than just clicks.

My shortlist

What I'd pick

Start with FirstPromoter if your primary objective is:

"Let our existing customers invite other users, while also letting affiliates/influencers promote us—and manage both from one system."

That's unusually well aligned with PLG. FirstPromoter explicitly supports affiliate, referral, influencer and sub-affiliate programs and lets you connect commission/reward logic to your billing system. firstpromoter.comfirstpromoter.com

The particularly useful piece for PLG is that you can make the referral experience feel like part of your product rather than sending customers to a generic affiliate site. FirstPromoter supports an embedded, branded referral portal, and rewards can be triggered by actual billing events. firstpromoter.com

I'd structure the programs differently:

Customer referral

• Give customer: e.g. $25 credit / free month
• Give referred user: e.g. $25 credit
• Trigger reward only after the referred account becomes a paying customer
• Put "Invite friends" directly inside the product
• Make sharing one-click

Affiliate

• Give partner: e.g. 20–30% recurring commission
• Longer attribution window
• Dedicated affiliate dashboard
• Coupon/link attribution
• Different commission tiers for high-volume partners

That separation matters: customers shouldn't have to think like affiliates, while serious affiliates need considerably more reporting and payout functionality.

When I'd choose the others

Choose Rewardful if you're a Stripe-first startup and want the fastest/least complicated implementation. Its Stripe integration monitors billing activity and automatically creates/adjusts commissions based on actual subscription events. help.rewardful.com

Choose Tolt if you're early-stage and want a very startup-oriented implementation, particularly if you're using Paddle or Chargebee as well as Stripe. affiliates.tolt.io

Choose PartnerStack if you're moving beyond "affiliate marketing" into a real partner ecosystem—agencies, consultants, resellers, technology partners, referral partners, etc. Its B2B SaaS positioning and partner marketplace become much more relevant at that point. partnerstack.com

One important PLG consideration

Don't optimize for number of affiliates/referrers recruited. Optimize for activated customers who actually generate a qualified referral.

The operational problem with referral/affiliate programs is often activation rather than software: recent industry/community analysis suggests that many programs accumulate lots of registered affiliates who never generate a referral. www.reddit.com

So I'd instrument the funnel as:

Eligible customer → referral prompt seen → referral link created → invite sent → referred signup → activated user → paid conversion → retained customer

Then calculate:

Incremental referral CAC = rewards + program costs ÷ incremental retained customers

That will tell you whether the program is actually a PLG growth loop rather than simply another acquisition channel.

Bottom line: I'd shortlist FirstPromoter, Rewardful, and Tolt, with FirstPromoter as my default recommendation for the combination of customer referrals + affiliates you're describing. If you tell me your billing stack (Stripe/Paddle/Chargebee), current MAU/customer count, and roughly how many affiliates you expect, I can narrow this to a specific choice and implementation architecture.

For a product-led growth (PLG) SaaS company, it's usually worth treating customer referrals and affiliate/partner marketing as two distinct motions, even if they're managed together:

• Customer referrals: Existing users invite colleagues or friends because they like the product. Rewards are typically account credits, premium features, or gift cards.
• Affiliates: Content creators, consultants, agencies, review sites, and partners earn commissions for driving new customers.

The best platforms support both, or integrate well with a dedicated affiliate tool.

Top recommendations

1. FirstPromoter

Best overall for PLG SaaS

If you're a B2B SaaS selling subscriptions, FirstPromoter is one of the strongest options because it was designed around recurring revenue.

Pros:

• Customer referrals and affiliates in one system
• Stripe integration
• Recurring commission support
• Coupon attribution
• SaaS-specific analytics
• Easy onboarding

Good fit if:

• ARR under ~$20M
• Self-serve signup
• Subscription billing

2. PartnerStack

Best for building a partner ecosystem

PartnerStack shines once your program expands beyond affiliates into:

• Agencies
• Consultants
• Technology partners
• Resellers
• Referral partners

Strengths:

• Marketplace exposure
• Automated payouts
• Recruiting partners
• Mature workflows

Less focused on customer referral campaigns than affiliate growth.

3. ReferralRock

Best customer referral platform

Excellent if your biggest growth opportunity is existing customers inviting coworkers.

Features include:

• Double-sided rewards
• Referral widgets
• Email automation
• Fraud prevention
• Referral landing pages

Can also manage affiliate-style programs, though that isn't its primary focus.

4. Rewardful

Best if everything runs through Stripe

Very popular among SaaS startups.

Pros:

• Fast implementation
• Stripe-native
• Recurring commissions
• Discount codes
• Simple UI

Ideal if you mostly need affiliate management with a lightweight referral capability.

5. Tolt

Best value

A newer entrant that's become popular with startups because it's:

• Easy to set up
• Modern UI
• Affordable
• Good Stripe integration

Great when you don't need enterprise complexity.

Suggested architecture

A mature PLG SaaS often runs two programs simultaneously:

Customer referral program

• Existing customer invites another company
• Reward: account credit or feature upgrade
• Triggered inside the product
• Promoted after activation or successful onboarding

Affiliate program

• Bloggers
• YouTubers
• Consultants
• Agencies
• Communities
• Industry newsletters

Reward:

• 20–40% recurring commission
• or fixed bounty

Both programs can point to the same signup flow while using different attribution rules.

Integrations to look for

Whatever platform you choose, prioritize integrations with:

• Billing: Stripe or your subscription platform
• CRM: Salesforce or HubSpot
• Product analytics: Mixpanel, Amplitude, or PostHog
• Customer engagement: Intercom or Customer.io
• Identity/authentication: Auth0 or Clerk (if applicable)
• Data warehouse: Snowflake or BigQuery (optional at scale)

If I were choosing by company stage

• Pre-seed to Seed (<$1M ARR): Tolt or Rewardful
• Series A ($1–10M ARR): FirstPromoter
• Series B+ ($10M+ ARR): PartnerStack
• Referral-first PLG motion: ReferralRock + a dedicated affiliate tool if needed

For most growing PLG SaaS startups with a self-serve model and subscription billing, FirstPromoter offers the best balance of customer referrals, affiliate management, recurring subscription support, and ease of implementation without the overhead of an enterprise partner platform.

For a product-led SaaS company, it's usually best to separate customer referrals from affiliate marketing, even if they're managed in the same platform.

• Referral programs reward existing users for inviting friends or colleagues who become customers.
• Affiliate programs are designed for creators, publishers, consultants, agencies, and partners who promote your product at scale.

As you grow, you'll want software that supports both without forcing awkward workarounds.

Here's how I'd evaluate the options.

My recommendations by stage

Early-stage PLG SaaS (Seed–Series A)

I'd shortlist:

1. Tolt
2. FirstPromoter

Why:

• handles recurring subscription commissions
• Stripe integration
• referral links
• coupon codes
• fraud prevention
• self-service affiliate dashboard
• relatively easy implementation
• affordable pricing

If you want one system for both affiliates and customer referrals, these are among the simplest choices.

Mid-market SaaS

Consider:

• PartnerStack
• impact.com

They support:

• agencies
• consultants
• technology partners
• resellers
• influencer programs
• enterprise reporting
• automated payouts
• marketplace discovery

The tradeoff is significantly higher cost and implementation effort.

Customer referral best practices

For PLG, I'd make customer referrals feel like a product feature instead of a marketing campaign.

Good rewards include:

• 1 month free for both users
• $25–100 account credit
• feature credits
• AI usage credits
• premium seats
• storage credits

Avoid cash unless your customers are primarily consumers.

The best-performing SaaS referrals usually have:

• in-app referral center
• unique referral links
• one-click sharing
• milestone rewards
• reminder emails
• dashboard showing referral status

Affiliate best practices

Keep affiliates separate from customers.

Affiliates expect:

• recurring commissions (20–40% is common in SaaS)
• attribution windows (60–180 days)
• coupon codes
• marketing assets
• payout automation
• tax forms
• detailed reporting

Integrations you'll probably want

Most PLG SaaS companies connect their referral platform with:

• Stripe for subscriptions
• HubSpot or Salesforce for CRM
• Segment or PostHog for product analytics
• Customer.io, Braze, or Iterable for lifecycle messaging
• Zapier or Make for automation

If I were building a modern PLG stack today

• Customer referrals: Tolt or Viral Loops
• Affiliate program: Tolt or FirstPromoter
• Analytics: PostHog
• Billing: Stripe
• Lifecycle messaging: Customer.io
• CRM: HubSpot

This combination keeps operational overhead low while giving you room to scale without migrating immediately to an enterprise partner platform.

If you share your billing system (Stripe, Paddle, Chargebee, etc.), CRM, and rough customer count (e.g. 5k, 50k, or 500k users), I can narrow this down to the best fit for your specific stack and growth stage.

For a product-led SaaS company, I'd recommend using one platform that can manage both customer referrals and affiliates rather than stitching together separate systems. It reduces attribution issues, simplifies payouts, and gives you one source of truth.

Here's how I'd evaluate the leading options:

What I'd recommend by company stage

Seed to Series A (PLG, Stripe/Paddle, <100 employees)

I'd usually recommend FirstPromoter because it supports both:

• customer referral campaigns ("Invite a friend")
• affiliate partners
• influencer programs

...inside one platform, with rewards tied to actual subscription billing events instead of just signups. That matters when you have free trials, upgrades, churn, and recurring subscriptions. firstpromoter.com

Typical setup:

• Customer referral
  • Existing customer gets one free month or account credit.
  • Friend gets 20% off the first payment.
  • Reward triggers only after the friend becomes a paying customer.

• Affiliate program
  • Bloggers
  • Agencies
  • Consultants
  • YouTubers
  • Integration partners

These partners earn recurring commissions while customer referrals receive product credits.

If affiliate recruitment is your biggest challenge

Software only manages affiliates you already have.

If you want help finding affiliates, PartnerStack stands out because it combines management software with a marketplace of active SaaS partners looking for products to promote. That's a major differentiator if you're investing seriously in partnerships. partnerstack.com

PLG referral best practices

The software matters, but the highest-performing programs usually share a few characteristics:

• Trigger referral invitations after users reach a clear success milestone (not immediately after signup).
• Reward both sides ("Give $20, Get $20" or account credits).
• Make referrals visible inside the product—not just in marketing emails.
• Delay rewards until the referred customer becomes a paying subscriber.
• Track revenue, not just signups, to understand the true ROI. Community discussions consistently emphasize that timing, incentives, and product experience drive success more than the specific platform chosen. www.reddit.com

My shortlist

• Best overall for PLG SaaS: FirstPromoter
• Best for building a large partner ecosystem: PartnerStack
• Best lightweight affiliate tool: Rewardful
• Best budget option: Tolt

If you can share your current stack (e.g. Stripe or Paddle, HubSpot or Salesforce, Segment, Mixpanel, Customer.io, etc.), I can narrow this down to the option that will require the least integration work.

For a product-led SaaS, I would avoid running customer referrals and affiliates as two completely separate programs unless you have very different audiences. The strongest PLG companies typically use one platform that supports:

• Customer referrals (existing users invite friends or coworkers)
• Affiliates (creators, consultants, agencies, communities)
• Recurring subscription attribution
• Stripe/Paddle billing events
• Automated payouts
• Fraud prevention (self-referrals, duplicate accounts)

That reduces operational overhead and gives you a single view of partner-driven revenue.

Here's how I'd evaluate the current landscape.