ChatGPT answers, unedited

For a coach selling online courses, I’d focus on affiliate/referral software that costs $0 while you’re validating the program, rather than tools that merely offer a 14-day trial.

Options worth considering

• referralful.com — free until your first affiliate joins, then starts at $19.99/month. It offers unlimited affiliates/clicks and Stripe tracking, with no payout transaction fee. This is particularly attractive if your course checkout runs through Stripe. Referralful Referralful
• affitor.com — reported as $0/month until the first $10,000 of affiliate-driven revenue, after which a percentage applies. Worth investigating if you'd rather pay based on results than commit to a monthly subscription. Affitor Documentation
• firstpromoter.com — not a permanent free tier, but it has a 14-day full-featured trial with no credit card, and supports affiliate, referral, and influencer programs. Paid plans start at $49/month. FirstPromoter
• rewardful.com — another established option for Stripe-based sales, but currently starts at $49/month rather than having a permanent free tier. Referly

What I'd look at first

If you're just getting your first students/referrers, I'd investigate Referralful first because its pricing structure matches your requirement unusually well: you can set up the program without paying, and the first charge only comes once an affiliate actually joins. Referralful

If your course isn't sold through Stripe, tell me what platform you use to sell the courses (e.g. Kajabi, Teachable, Thinkific, Podia, ThriveCart, Shopify, WordPress), and I can narrow this down to the options that integrate with it and compare their free tiers.

For a coach selling online courses, I’d shortlist these based specifically on “I want to test referrals without paying a monthly fee upfront.”

My practical recommendation

If you're on Shopify: start with GoAffPro. Its free tier currently includes unlimited affiliates, sales, and revenue, so you can actually validate the referral channel without a subscription. GoAffPro Help Center Goaffpro

If you're selling courses through Stripe: Referralful is particularly interesting for a bootstrapped launch because it says you can build and connect the program for free until your first affiliate joins, then the Starter plan is $19.99/month. Referralful

If you need more advanced workflows: FirstPromoter is more feature-rich, but its free period is only 14 days and paid plans start at $49/month. FirstPromoter FirstPromoter

For an initial experiment, I'd prioritize no recurring cost until you have actual affiliate activity over paying $49/month just to have the software sitting there.

If you tell me what platform you use to sell the courses (Teachable, Kajabi, Thinkific, Podia, Shopify, Stripe, etc.), I can narrow this down to the 2–3 options that actually integrate with it.

For a coach selling online courses, I’d prioritize simple setup, low/no upfront cost, and student-friendly affiliate tracking rather than enterprise referral platforms. These are the options I’d shortlist:

My recommendation by situation

• You’re launching your first course and have 0–50 affiliates:

→ Start with Refgrow or Referralful. They match the coaching/course use case better than generic affiliate software. Refgrow Referralful

• You already have happy students and want them to promote you:

→ Choose Refgrow. The student-to-affiliate workflow is the closest match to a coach’s business model. Refgrow

• You sell through Stripe and want the simplest technical setup:

→ Choose Referralful or Endorsely. Referralful Stripe App Marketplace

Features I’d make sure you have

For an online course referral program, don’t just look for “referral links.” You’ll probably want:

• Affiliate dashboard where students can grab their links
• Coupon-code tracking (many students promote better with a code)
• Recurring commissions if you sell memberships
• Automatic commission calculations
• Easy payouts (PayPal/Wise/Stripe)
• Email notifications when someone earns a commission

A simple starting offer could be:

• Existing students: 20–30% commission
• Partners/influencers: 30–50% commission
• Give affiliates a ready-made kit: testimonials, email copy, social posts, and webinar links

If you tell me what platform you sell your course on (Kajabi, Teachable, Thinkific, Podia, WordPress, Shopify, Stripe checkout, etc.), I can narrow this to the best 2–3 choices.

If you're a coach selling online courses and mainly want to get your first affiliates/referrals without committing to a monthly bill, I’d shortlist these:

• referralful.com — my top pick if you use Stripe. You can set up the program for free, and billing doesn't start until your first affiliate joins. After that, the starter plan is $19.99/month, with unlimited affiliates/clicks and 0% payout transaction fees. It also supports recurring commissions, which is useful if your courses have subscriptions or payment plans. Referralful Referralful
• uppromote.com — best if you're on Shopify. It has a genuine $0 plan, including affiliate-link/coupon tracking, analytics, automated emails and manual payouts. The free tier covers up to $3,000/month in referral sales; paid plans then add a percentage of referral sales. UpPromote Uppromote
• firstpromoter.com — good, but not my budget-first choice. It has a 14-day free trial rather than a permanent free tier, then starts at $49/month. It's more attractive if you need sophisticated affiliate management or integrations beyond Stripe. FirstPromoter FirstPromoter

What I'd choose

Stripe + just getting started → Referralful.
Shopify → UpPromote.
Already have meaningful affiliate revenue and need advanced controls → FirstPromoter.

One important distinction: if by "referral software" you mean students referring friends for a discount/credit, rather than recruiting affiliates who earn commissions, the best options can be different.

If you tell me what platform you sell your courses through (e.g. Kajabi, Teachable, Thinkific, Podia, ThriveCart, Stripe, Shopify), I can narrow this down to the 2–3 cheapest options that actually integrate with it.

For a coach selling online courses, I’d prioritize a genuinely free starting tier, easy setup, and referral tracking tied to purchases—not just expensive enterprise affiliate software.

My shortlist

• Affitor — best fit if you want $0 upfront. Its current model is $0/month until your affiliates generate $10,000 in attributed revenue, then it charges 3.5% on affiliate-driven sales above that threshold. That makes it particularly attractive while you’re testing whether referrals work at all. Affitor Documentation Affitor Documentation
• Rewardful — best if your courses use Stripe. It has a simple Stripe-native setup and starts at $49/month, but it doesn't have a permanent free tier—only a trial. Affref
• FirstPromoter — good for a more established affiliate program. It starts at $49/month with a 14-day trial and supports Stripe, Paddle, Chargebee, Recurly, and Braintree. Again, no permanent free tier. FirstPromoter Affitor
• Tolt — worth considering as you grow. It starts at $69/month, supports unlimited affiliates/referrals, and is geared toward subscription/SaaS-style businesses, but doesn't meet your "free tier" requirement. Affitor

What I'd choose

Start with Affitor if your primary goal is "I want to launch an affiliate/referral program without adding another monthly bill while I'm getting my first signups." The $0 entry point is much better aligned with an early-stage coaching business than paying $49–$69/month before you know whether referrals will produce sales. Affitor Documentation

One caveat: if you're selling through Kajabi, Teachable, Thinkific, Podia, or another course platform, the integration is the deciding factor. If you tell me which platform you use to sell the courses and roughly how much a course costs, I can narrow this to the best 2–3 options and compare their free-tier limitations.

For a coach selling online courses, I’d prioritize true free-to-start pricing, simple setup, Stripe/course-platform compatibility, and affiliate link + coupon tracking.

My shortlist

1. referralful.com — best if you use Stripe

• Free until your first affiliate joins
• Then starts at $19.99/month
• Unlimited affiliates and clicks on the Starter plan
• Stripe sync, real-time tracking, branded affiliate portal, PayPal/Wise payouts
• 0% payout transaction fees Referralful Referralful

Why I'd pick it: For a coach just testing whether students, alumni, or influencers will refer courses, this minimizes upfront risk.

2. uppromote.com — best actual $0 ongoing option

• $0/month free plan
• Tracks up to $3,000/month in referral sales
• Affiliate links and coupon tracking
• Analytics, automated emails, fraud protection, and manual payouts
• Paid Growth plan starts at $29.99/month plus 2% of successful referral sales. UpPromote Upsell Promote

Caveat: It's particularly geared toward e-commerce/Shopify, so I'd choose it only if the coach's course setup fits its integrations.

3. rewardful.com — best polished course-focused option

• Specifically supports online courses, memberships, certifications, etc.
• Strong Stripe integration and affiliate links/coupon codes
• 14-day free trial, but not a permanent free tier. Rewardful Rewardful

Good choice once the coach is generating enough sales to justify paying for a more established affiliate system.

4. firstpromoter.com — best for more sophisticated programs

• 14-day free trial, no credit card
• Starts at $49/month
• Supports Stripe, Paddle, Chargebee, Recurly and Braintree
• More advanced commission, reporting, payout and fraud-management capabilities. FirstPromoter FirstPromoter

I'd consider this overkill for initial testing, though.

What I'd do

If this is an early-stage coaching business with a handful of initial affiliates, my order would be:

Referralful → UpPromote → Rewardful → FirstPromoter

If the course is sold through Stripe, I'd start with Referralful because you can build and test the referral program without paying until the first affiliate actually joins. If you specifically need a permanently free tier, I'd investigate UpPromote first. Referralful Upsell Promote

If you tell me what platform the coach uses to sell the courses (Kajabi, Teachable, Thinkific, Podia, WordPress, Stripe, etc.), I can narrow this to the best 2 options and compare their actual costs at, say, 10, 50, and 100 referrals/month.

If the priority is “I’m just getting started and don’t want a monthly bill until referrals actually happen,” I’d shortlist these:

My recommendation: Referralful

For an online-course coach doing initial signups, I'd favor a tool that doesn't turn into an expense before you've proven the referral channel. Referralful currently says you can build the program and connect Stripe without paying until your first affiliate joins, then pricing is based on payout volume rather than a fixed monthly subscription. referralful.com

One important caveat: these tools are primarily affiliate/referral platforms, so the right choice depends heavily on where you sell the course. If you're using Stripe Checkout, I'd put Referralful/Affitor at the top. If you're using Kajabi, Teachable, Thinkific, Shopify, etc., I'd choose based on that platform's integration rather than price alone.

If you tell me what platform you use to sell the courses (Kajabi, Teachable, Thinkific, Stripe, Shopify, etc.), I can narrow this to the cheapest 2–3 options that actually integrate with it.

If the key requirement is “I want to test referrals with little or no upfront cost”, I’d avoid the popular $49+/month tools at first.

My picks

• Best fit: Referralful — It’s free until your first affiliate joins, then starts at $19.99/month, with 0% payout fees. It tracks Stripe sales, recurring revenue, referral links/coupons, and affiliate commissions. Referralful Referralful

Why I’d pick it: ideal for a coach who is validating an affiliate/referral program and doesn’t want to pay $50–$100/month before knowing whether anyone will promote the course.

• Best established option: Rewardful — Very straightforward and particularly good if you use Stripe. It has unlimited affiliates on its $49/month Starter plan and 0% transaction fees, but only a 14-day free trial, not a permanent free tier. Rewardful

Why choose it: if you expect the program to work and want a more established affiliate-management platform.

• FirstPromoter — Similar pricing: $49/month after a 14-day trial, with affiliate/referral tracking, coupon tracking, and support for Stripe, Paddle, Chargebee, Recurly and Braintree. FirstPromoter FirstPromoter

Why choose it: worth considering if your course platform/payment stack isn't Stripe-only.

• Tolt — Starts at $69/month after a 14-day trial, so I wouldn't make it the first choice for a budget-conscious launch. Tolt

What I'd do for a course coach

Start with Referralful if your checkout/payment system is Stripe. You can get the referral program configured without committing to a monthly software bill, recruit your first handful of students/partners, and see whether referrals actually generate sales. Referralful

A simple setup could be:

Student/coach gives each affiliate a unique link → affiliate sends prospects → prospect buys course → software attributes sale → affiliate earns, say, 20–30% commission.

Once you're consistently generating meaningful referral revenue, I'd reassess whether the extra maturity/features of Rewardful justify moving to $49/month.

If you tell me what platform the courses are sold through (Kajabi, Teachable, Thinkific, Podia, ThriveCart, Stripe, etc.), I can narrow this down to the 2–3 cheapest options that actually integrate with your setup.

For a coach selling online courses, I’d prioritize simple affiliate/referral tracking, low cost, and easy payouts rather than a complex enterprise referral system. The best fit depends on whether you want students referring friends or affiliates/partners promoting your course.

Here are budget-friendly options to consider:

My shortlist for an online course coach

1. Starting from zero (first 10–50 referrals):

• Use a lightweight setup: - Unique coupon codes
• UTM links
• Google Sheet tracking
• Pay commissions manually
• This keeps costs at $0 while you validate that referrals actually happen. Some referral platforms also provide free link generators or manual tracking tools for early-stage programs. Referral Earl
• Selling through Stripe (common for courses):

• Look at Rewardful or Tolt.
• Good structure: - Affiliate gets 20–40% commission
• Each affiliate has a dashboard
• Automatic attribution
• Using a course platform with built-in creator tools:

• Check whether your platform already supports affiliates before adding another subscription. Some creator platforms include free starting tiers for course businesses, though limits vary. Ruzuku

What I’d choose for a typical solo coach

• Under ~$5k/month in course sales: start with manual tracking or a free/basic tool.
• Growing audience + partner referrals: move to Rewardful/Tolt-style affiliate software.
• Many ambassadors/influencers: use a dedicated affiliate platform.

A couple of questions would narrow this down:

1. What platform sells the course (Teachable, Kajabi, Thinkific, Stripe checkout, Shopify, etc.)?
2. Are you trying to reward existing students who refer friends, or recruit affiliates who promote the course to their audience?

For a coach selling online courses, I’d prioritize simple affiliate/referral tracking, low upfront cost, easy payouts, and integrations with your course platform/payment processor. You probably don’t need an enterprise partner platform at the beginning.

Here are the options I’d shortlist:

My recommendation by stage

If you’re just launching and want 5–20 students through referrals:

• Start with PromoteKit or Trackli. They let you test whether your audience will actually refer people before committing to a subscription. PromoteKit Trackli

If you already use Stripe for course payments:

• Consider Endorsely because the free period is tied to affiliate revenue rather than time. Endorsely

If you sell through a course platform:

• Check integrations first: - Teachable / Thinkific / Kajabi: you may need Zapier, webhooks, or a platform-native affiliate feature.
• Stripe checkout: Stripe-native tools are usually easiest.

For a typical solo coach, I’d start with PromoteKit (very small test) or Endorsely (if Stripe-based and expecting growth) and only move to a paid affiliate platform once referrals are producing revenue.

If you tell me your course platform (Kajabi, Teachable, Thinkific, Podia, WordPress, Shopify, Stripe checkout, etc.) and whether you want customer referrals or affiliate partners, I can narrow it down.

If the priority is “I want to test referrals without paying a monthly fee until I have traction,” I’d avoid the better-known $49/month tools initially.

My shortlist

• referralful.com — best fit for a very early-stage coach

• Free to set up and free until your first affiliate joins.
• Built around Stripe, with referral tracking and recurring commissions.
• You pay based on affiliate payout activity rather than committing to a monthly subscription. Referralful
• My pick if your courses are paid through Stripe and you're just getting your first few referrers.
• getreditus.com — worth considering for a genuinely free ongoing tier

• Rewardful's recent comparison lists Reditus as having a free plan, although its paid entry point is higher. Rewardful
• I'd investigate its current free-tier limits before committing, particularly whether it supports the number of affiliates and sales you're expecting.
• rewardful.com — excellent, but not what I'd choose for your stated budget

• Very well suited to online courses and integrates with platforms such as Teachable, Podia and Circle. Rewardful
• However, there's no permanent free tier: it currently starts at $49/month after a 14-day trial. Rewardful
• firstpromoter.com — powerful but similarly not free

• Starts at $49/month after a 14-day trial. FirstPromoter
• Particularly interesting if you're using Stripe, Paddle, Chargebee, Recurly or Braintree and want sophisticated commission rules. FirstPromoter

What I'd do in your situation

Start with Referralful if you're Stripe-based. You can validate whether students, alumni, coaches, or influencers will actually send you customers before taking on a $49–$100/month software bill.

For a coaching business, I'd keep the initial program extremely simple:

Refer someone → they buy the course → referrer gets 20–30% commission.

Once you're consistently generating enough referral revenue that $49/month is trivial, I'd reassess Rewardful vs. FirstPromoter based on the course platform and billing setup.

If you tell me what you're using to sell the courses (e.g. Kajabi, Teachable, Thinkific, Podia, Stripe, etc.) and roughly how many signups you expect per month, I can narrow this to the cheapest 2–3 options that actually integrate with your stack.

For a coach selling online courses, I’d prioritize low/no cost until you actually have affiliates generating sales, easy setup, and support for referral links/coupons.

My shortlist

1. Referralful — my first choice if you use Stripe.
You can set everything up for free, with no credit card, and billing doesn't begin until your first affiliate joins. After that, the entry plan is $19.99/month, with unlimited affiliates/clicks and 0% transaction fees. Referralful Referralful

2. UpPromote — best if your course business runs through Shopify.
It has a genuine $0/month Free plan for your first campaign, including affiliate link/coupon tracking and analytics. Paid plans start at $29.99/month plus a percentage of successful referral sales. UpPromote UpPromote

3. Rewardful — solid, but I'd wait until you have traction.
It's particularly well suited to Stripe and online courses, but its current entry plan is $49/month after a 14-day trial. Rewardful Rewardful

What I'd do

If you're just testing referrals with your first 5–20 students/affiliates, I'd go with Referralful if you're using Stripe. You avoid paying $49/month just to discover whether affiliates will actually sell your course.

If you tell me what platform you sell the course through (Kajabi, Teachable, Thinkific, Podia, Shopify, Stripe/Gumroad, etc.), I can narrow this to the 2–3 cheapest options that actually integrate with it.

If the priority is very low upfront cost + a genuinely usable free starting period, I’d shortlist these:

• rewardful.com — best fit if you use Stripe. It’s designed for online courses and integrates with platforms such as Teachable, Podia, and Circle. You get a 14-day free trial, then the Starter plan is $49/month with unlimited affiliates and 0% transaction fees. Rewardful Rewardful
• firstpromoter.com — best if you want more sophisticated referral rules. It specifically supports edtech/course businesses, including one-time enrollment commissions and recurring commissions. There’s a 14-day free trial with no credit card; paid plans currently start at $49/month. FirstPromoter FirstPromoter
• referralful.com — worth investigating if “free until I actually have affiliates” is the key requirement. Its site says there’s no charge until your first affiliate joins, after which pricing is based on payout volume. Referralful
• refVenue — another potentially attractive low-budget option: its published pricing is $0 for a free plan, with paid tiers at $25/$45 per month. I’d verify that its free-tier limits cover your expected number of referrals before committing. refVenue

What I'd choose

For a solo coach just testing whether referrals will work, I'd start with Referralful or refVenue because avoiding a monthly bill while you're still getting your first signups is more valuable than having a huge affiliate-management feature set.

If you already know you'll recruit a meaningful group of affiliates and you're using Stripe, I'd pick Rewardful. Its course-specific integrations and simple setup make it a particularly natural fit. Rewardful

One important distinction: a 14-day free trial isn't the same as a free tier. Rewardful and FirstPromoter currently offer trials, not permanent free plans. Rewardful FirstPromoter

If you tell me what platform you sell the courses on (Teachable, Kajabi, Podia, Thinkific, ThriveCart, your own Stripe checkout, etc.), I can narrow this to the cheapest 2–3 options that actually integrate with it.

For a coach selling online courses, I’d prioritize a genuinely free starting tier, simple setup, and referral links/codes rather than enterprise affiliate features.

My top picks

Why I’d start with Referralful: it currently lets you build and launch the program for free, with billing beginning only once your first affiliate joins. Its starter plan is $19.99/month afterward, with unlimited affiliates/clicks and Stripe tracking. Referralful Referralful

That makes the economics particularly attractive for a course coach: you don't have to pay $50–$100/month while you're still recruiting your first few students/referral partners.

One important distinction

If by "referral software" you mean students get a referral link and earn, say, $25 or 20% for every friend who buys your course, I'd use an affiliate/referral platform like Referralful.

If you're selling through Kajabi, Teachable, Thinkific, Podia, Shopify, or another course platform, the best choice may depend heavily on which checkout system you're using. Tell me which platform you sell your courses through and roughly how much a course costs, and I can narrow this down to the cheapest 2–3 options that will actually integrate with your setup.

For a coach selling online courses, I’d look for affiliate/referral tracking + payouts + simple integrations rather than a heavy enterprise referral platform. These are good budget-friendly options with free or low-cost ways to start:

OnlineCourseTools### My shortlist for a new coach

1. If you already sell courses with Stripe:
Start with Rewardful or Tolt. They’re designed for affiliate/referral tracking and let you give students, partners, or influencers unique referral links.

2. If you’re still building your funnel:
Use Systeme.io. It can cover landing pages, email, course delivery, and basic marketing workflows without stacking several subscriptions. OnlineCourseTools

3. If you have only a handful of affiliates initially:
You may not need software yet. A simple setup can work:

• Unique coupon codes for each referral partner
• Stripe/Gumroad sales reports
• Monthly payouts via PayPal/Wise
• Upgrade to referral software once tracking becomes painful

What I’d avoid at the beginning

• Enterprise referral platforms with $100+/month pricing
• Tools built mainly for ecommerce loyalty points
• Systems that charge per affiliate when you only have 5–20 partners

For a typical online coach launching their first course, I’d probably start with Systeme.io if they need the whole sales stack, or Tolt/Rewardful if they already have checkout and only need referrals. OnlineCourseTools

If you tell me what platform you sell on (Kajabi, Teachable, Thinkific, Podia, WordPress, Shopify, Stripe checkout, etc.), I can narrow it down.

If the coach is just getting started and wants $0 upfront, I’d prioritize a tool with a genuine free tier rather than the common “14-day free trial” model.

My shortlist

Referralful is especially interesting for a coach: you can set up the program, connect Stripe, and start recruiting without paying a monthly software fee. Its current Starter plan is $19.99/month after the first affiliate joins, with unlimited affiliates/clicks and 0% transaction fees. Referralful Referralful

Affitor is another compelling option if the coach expects affiliates to generate meaningful sales: it charges $0/month until affiliates generate their first $10,000, then takes 3.5% on affiliate-driven sales. Affitor Documentation Affitor Documentation

I wouldn't start with Rewardful or FirstPromoter if keeping initial costs at zero is the priority. Both currently start around $49/month after a 14-day trial, rather than offering a permanent free tier. Referly Affitor Documentation

My recommendation: Referralful if the course checkout runs through Stripe. If you tell me what platform the coach uses to sell the courses (Kajabi, Teachable, Thinkific, Podia, Stripe, Shopify, etc.), I can narrow it down to the best 1–2 options and check whether they integrate directly.

For a coach selling online courses, I’d prioritize a genuinely free tier, simple referral links/coupons, and low costs while you’re validating the program.

My shortlist

1. UpPromote — best if your courses are on Shopify

• Has a genuine free plan, reportedly covering up to $3,000/month in referral revenue.
• Good fit if you want affiliates/referrers to share links or discount codes.
• Paid pricing scales with referral sales rather than forcing a large monthly subscription. Referly
• BixGrow — best ultra-low-budget option

• Free tier reportedly includes up to 30 affiliates and 50 referral orders.
• That makes it attractive for an initial launch where you might recruit a handful of students, coaches, or creators as ambassadors. Referly
• Endorsely — best if you expect modest early revenue

• Free until approximately $1,000/month in affiliate revenue, then starts around $39/month according to a current comparison. Referly
• Worth considering if your course isn't Shopify-based and you want a more conventional affiliate platform.
• Referralful — interesting if your checkout is Stripe

• It currently advertises free setup until your first affiliate joins, then pricing starts at $19.99/month.
• It integrates with Stripe and handles affiliate tracking and payouts. Referralful
• The catch: it's positioned primarily around Stripe/SaaS, so I'd verify that your particular course checkout and customer flow are supported before committing.

What I'd pick

If you're on Shopify: UpPromote.

If you're just testing with 5–30 referral partners: BixGrow is particularly appealing because the free limits are explicitly designed around a small program.

If you're using Stripe directly: I'd test Referralful alongside the free options.

I wouldn't start with Rewardful, FirstPromoter, or Tolt if "free tier" is a hard requirement. Their current entry points are roughly $49, $49, and $69/month respectively, with trials rather than permanent free plans. Referly Affitor Documentation

If you tell me what platform you use to sell the courses (Kajabi, Teachable, Thinkific, Podia, Shopify, Stripe, etc.), I can narrow this to the 2 cheapest options that actually integrate with your checkout.

If the coach is selling online courses and wants to keep costs near zero while validating a referral/affiliate program, I’d prioritize a permanent free tier or “free until you get traction” model rather than tools that only offer a 14-day trial.

My shortlist

Referralful would be my first choice if the course business uses Stripe. It lets you set up the program without paying, and billing doesn't start until the first affiliate joins; its current Starter plan is $19.99/month afterward, with unlimited affiliates/clicks and no payout transaction fee. Referralful Referralful

Affitor is another particularly interesting option: its published 2026 pricing is $0/month until affiliates generate their first $10,000 in revenue, after which a percentage applies. That's attractive if the goal is specifically “let me prove this referral channel works before adding another monthly subscription.” Affitor Documentation Affitor Documentation

I wouldn't start with Rewardful or FirstPromoter for this particular use case. Both currently start around $49/month rather than offering a permanent free tier, although they have free trials. Referly SaasCheck

What I'd choose

For a solo coach with, say, 0–20 initial affiliates, I'd go:

1. Referralful → 2. Affitor → 3. Rewardful

The important caveat is that these tools are strongest when the course checkout/payment system is compatible with their integrations. If you tell me what platform the coach sells through (Kajabi, Teachable, Thinkific, Podia, Stripe, Shopify, etc.), I can narrow this down to the cheapest option that actually integrates with it.

If the priority is “start free, validate referrals, then pay only when the course business has traction,” I’d shortlist these:

• referralful.com — best budget pick if you use Stripe. You can set up the program for free, and billing doesn't begin until your first affiliate joins. After that, the Starter plan is $19.99/month, with unlimited affiliates/clicks and 0% payout fees. Referralful Referralful

Caveat: it is built around Stripe, so I'd verify that your course platform's checkout/payment flow is compatible.

• rewardful.com — best established course-focused option, but not free-tier. It explicitly supports online courses and integrations including Teachable, Podia, and Circle. Pricing starts at $49/month, with a 14-day free trial. Rewardful
• firstpromoter.com — good if your course stack isn't purely Stripe. It supports Stripe plus billing platforms such as Paddle, Chargebee, Recurly and Braintree, and has a 14-day free trial with no credit card. It does not appear to have a permanent free tier. FirstPromoter FirstPromoter

My recommendation

For a coach just getting an online-course referral program off the ground, I'd try Referralful first if you're on Stripe. The economics are unusually favorable for initial testing: $0 while you're recruiting/testing, then $19.99/month once the first affiliate joins. Referralful

If you tell me what platform you sell the courses on (Teachable, Kajabi, Podia, Thinkific, Stripe, etc.), I can narrow this to the 2–3 cheapest options that actually integrate with your setup.

For a coach selling online courses, I’d prioritize simple affiliate/referral tracking, low or no upfront cost, coupon-code support, and easy payouts. You probably don’t need an enterprise referral platform at the beginning.

Here are some budget-friendly options with free tiers or free-to-start plans:

My shortlist for a course coach

1. If you use Stripe for course payments: Start with PromoteKit or Endorsely. They’re closest to a “plug in and launch an affiliate program” workflow. PromoteKit Stripe Marketplace
2. If you’re still proving demand: Use Referralful because you can set things up before paying. Referralful
3. If you have a tiny audience (first 10–100 students): Don’t over-engineer it. A simple referral setup with:

• 20–30% commission for affiliates
• unique referral links
• discount codes for their audience
• monthly payouts

is usually enough.

A couple of questions would change my recommendation:

• What platform hosts your course (Kajabi, Teachable, Thinkific, Podia, WordPress, Gumroad, Stripe checkout, etc.)?
• Are you looking for student referrals (“bring a friend, get a reward”) or affiliate partners (“creators/influencers sell your course for commission”)?

For a coach selling online courses, I’d prioritize free-to-start + simple Stripe integration + affiliate links/codes + automatic commission tracking.

My top pick: Referralful

referralful.com is the best fit if the goal is “let me test referrals before committing to another monthly expense.”

• $0 to set up and remains free until your first affiliate joins.
• Then starts at $19.99/month.
• Unlimited affiliates and clicks.
• Stripe sync and real-time tracking.
• Branded affiliate portal.
• PayPal/Wise payout support.
• 0% payout transaction fees. Referralful Referralful

For a new course/referral program, that pricing model is particularly attractive because you're not paying $50–$70/month while you're still recruiting your first few partners.

Other options worth considering

rewardful.com has a solid feature set and supports Stripe/Paddle, but its cheapest plan is $49/month after a 14-day trial. Rewardful

firstpromoter.com is similarly capable, with a $49/month Starter plan after a 14-day trial. FirstPromoter FirstPromoter

tolt.com starts at $69/month after its 14-day trial, so I'd probably skip it for an initial experiment. Tolt

What I'd do in your situation

If you're just getting the first signups, start with Referralful, assuming your course checkout runs through Stripe. Set up something simple like:

Give $50, Get $50
Your student refers a friend → friend gets $50 off → student receives $50 commission.

Once you're consistently generating enough referral revenue that more advanced affiliate management is worth paying for, reassess Rewardful or FirstPromoter.

One caveat: if your course platform isn't Stripe-based, tell me which platform you use (Kajabi, Teachable, Thinkific, Podia, Systeme.io, etc.). The best choice can change substantially based on that integration.

For a coach selling online courses, I’d prioritize low/no upfront cost, simple affiliate signup, coupon/link tracking, and Stripe integration.

My top picks

1. referralful.com — best fit for your “free until I get signups” requirement

• $0 to set up and until your first affiliate joins
• Then starts at $19.99/month
• Unlimited affiliates and clicks on the starter tier
• Stripe integration, tracking, affiliate portal, and PayPal/Wise payout support
• 0% payout transaction fee Referralful Referralful

Why I'd pick it: If you're just testing whether students, coaches, influencers, or past clients will refer new course buyers, you don't have to commit to a $50+/month subscription before proving the channel.

2. refvenue.com — worth testing if you want a genuine free plan

• Search results currently show a $0 free tier, followed by paid plans around $25/$45 per month.
• It advertises recurring commissions, coupon attribution, and fraud protection. refVenue

I'd investigate the free-tier limits before committing, since those matter a lot for a small course business.

3. rewardful.com — good product, but not my budget pick

• Very good Stripe integration and affiliate tracking.
• But the current entry price is $49/month, with only a 14-day free trial—not a free tier. Rewardful

I'd consider it once the affiliate channel is reliably producing sales.

4. firstpromoter.com — powerful, but overkill initially

• 14-day free trial.
• Starts at $49/month.
• Strong affiliate portal, coupon tracking, automated commissions, and Stripe support. FirstPromoter FirstPromoter

What I'd do in your situation

Start with Referralful if your course checkout uses Stripe. You can set up the referral program without paying anything, recruit your first few affiliates, and only start paying when someone actually joins the program. Referralful

For a coach, I'd keep the initial program extremely simple:

• 20–30% commission on course sales
• Give every affiliate a unique referral link
• Also provide a coupon code for people who prefer sharing codes
• Recruit 5–10 affiliates initially: former students, complementary coaches, newsletter owners, podcasters, and relevant creators
• Don't pay for sophisticated affiliate software until you've proven that referrals actually generate sales

One caveat: Referralful is specifically built around Stripe, so if your course platform is something like Kajabi, Teachable, Thinkific, Podia, etc., I'd check the exact integration before choosing it.

If you tell me which platform you sell the course on (Kajabi, Teachable, Thinkific, Podia, WordPress, Stripe, etc.), I can narrow this down to the 2–3 cheapest options that actually integrate with it.

For a coach selling online courses, I’d look for affiliate/referral software that can track links, pay commissions, and start free or nearly free. The best choice depends on whether you want student referrals (“refer a friend”) or affiliate partners (“coaches/creators promote my course”).

Here are some budget-friendly options:

My recommendations by situation

1. You’re just launching and have <100 customers

• Start with SparkLoop if you already have an email audience. Ruzuku
• Or use a lightweight referral setup with unique coupon codes + a spreadsheet until referrals justify software.

2. You want students to bring in friends

• Look at ReferralHero or ReferralCandy. These are closer to a “give $50, get $50” customer referral model. Capterra

3. You want influencers/partners promoting your course

• Use Rewardful, FirstPromoter, or a similar affiliate platform. They’re designed around commission tracking rather than customer rewards.

4. You want the cheapest possible start
A simple stack can work well:

• Course platform checkout
• Unique affiliate links/codes
• Pay commissions manually via PayPal/Wise
• Move to dedicated software once you have consistent referrals

For most solo coaches, I’d start with SparkLoop (audience/referral growth) or Rewardful (affiliate commissions) rather than paying for a full referral suite immediately. Ruzuku

If you tell me what platform you sell courses on (Kajabi, Teachable, Thinkific, Podia, WordPress, Shopify, etc.) and whether you want students or affiliates, I can narrow it to the best 2–3 options.

If you mean referral/affiliate software for a coach selling courses, I’d prioritize a genuinely free starting tier, easy setup, and support for payment links/checkout—not enterprise partner-management features.

My shortlist

Affitor is particularly interesting for your use case: its current pricing is $0/month, with a 3.5% fee on affiliate-driven sales only after the first $10,000 in affiliate revenue. That makes it attractive when you're still recruiting your first few course promoters. Affitor Documentation Affitor

Referralful is another strong option if your course checkout runs through Stripe. It says it's free until your first affiliate joins, then starts at $19.99/month; it includes Stripe syncing, affiliate tracking, a branded portal, and PayPal/Wise payouts. Referralful

One caveat: several popular tools advertised as "free trials" aren't actually free tiers. Rewardful and FirstPromoter currently start around $49/month after their trial periods. Affitor Documentation

What I'd choose

• Just validating the idea / 1–10 affiliates: Affitor
• Selling courses through Stripe and want very simple setup: Referralful
• Already have meaningful affiliate revenue and want a mature platform: Rewardful
• Need broader billing integrations: FirstPromoter

If you tell me what platform you use to sell the course (Kajabi, Teachable, Thinkific, Podia, Stripe, ThriveCart, etc.), I can narrow this to the 2–3 cheapest options that actually integrate with it.

Affitor is particularly interesting for your use case: its current pricing is $0/month, with a 3.5% fee on affiliate-driven sales only after the first $10,000 in affiliate revenue. That makes it attractive when you're still recruiting your first few course promoters. docs.affitor.com affitor.com

Referralful is another strong option if your course checkout runs through Stripe. It says it's free until your first affiliate joins, then starts at $19.99/month; it includes Stripe syncing, affiliate tracking, a branded portal, and PayPal/Wise payouts. referralful.com

One caveat: several popular tools advertised as "free trials" aren't actually free tiers. Rewardful and FirstPromoter currently start around $49/month after their trial periods.

What I'd choose

If the goal is a coach selling online courses who wants to test referrals without committing to a monthly software bill, I’d prioritize tools with a genuinely free tier rather than the usual “14-day free trial.”

My picks

• refvenue.com — best fit for a budget-conscious launch. It currently advertises a $0 free plan, with paid plans starting around $25/month. It’s designed for affiliate/referral programs and supports Stripe, which is useful if the course checkout runs through Stripe. refVenue
• affitor.com — worth considering if you want to pay only after referrals happen. A current comparison reports $0/month until affiliate revenue reaches $10,000, followed by a transaction-based fee. Affitor Documentation
• rewardful.com — best “upgrade later” option, but not free. It starts around $49/month and is particularly good for Stripe-based businesses, with simple referral tracking and recurring commissions. Rewardful AffRef
• tapfiliate.com — powerful but probably overkill initially. It has a free trial rather than a permanent free tier, and its entry pricing is considerably higher. Tapfiliate Help Center

What I'd do for a coach

Start with refVenue if the requirement is specifically “I want to recruit my first 5–20 affiliates/customers without paying monthly software costs.” Then move to a more established platform once the referral channel proves it can generate sales.

One important distinction: if by “referral” you mean existing students get a link/code and earn, say, $25 for every friend who buys your course, rather than a full-blown affiliate program, you can potentially use a much simpler/cheaper setup.

If you tell me what platform the course is hosted/sold on (Kajabi, Teachable, Thinkific, Podia, Stripe, Shopify, etc.), I can narrow this to the 2–3 cheapest options that actually integrate with it.

If the coach is selling online courses and wants to validate referrals before paying for software, I’d prioritize a tool with a genuinely free/low-cost entry tier rather than Rewardful/Tapfiliate, which currently start around $49/$89 per month and don’t offer a permanent free tier. StackScored Tapfiliate

My recommendation

1. refVenue — best budget-first choice

• Has a $0/month free plan, with paid plans starting around $25/month.
• Designed for affiliate/referral programs and supports Stripe.
• The free plan is particularly attractive while you're recruiting your first handful of course affiliates.
• According to its current comparison, it includes unlimited affiliates and automated Stripe payouts even on the free tier. refVenue
• Best for: a solo coach who wants to get a referral program running without committing to another monthly subscription.

2. Affitor — good if you want to pay based on results

• Advertises $0/month until affiliates generate their first $10,000 in revenue.
• After that threshold, it charges a percentage on affiliate-driven sales rather than a normal monthly subscription.
• This can be attractive if course sales are initially unpredictable. Affitor Documentation
• Best for: someone who'd rather give up a small percentage of successful referral revenue than pay $25–$50 every month.

3. Rewardful — best once you're willing to pay

• Very straightforward for Stripe-based businesses and particularly good for simple recurring referral programs.
• But it starts at about $49/month, so I wouldn't choose it for your stated "free tier for initial signups" requirement. Rewardful FirstPromoter
• Best for: a coach who has proven the referral channel and wants a polished, established platform.

What I'd choose

For a typical coach selling a $200–$2,000 course, I'd start with refVenue if the goal is $0 upfront, or Affitor if you prefer a pay-when-referrals-work model.

One important consideration is where the course is sold. If it's through Kajabi, Teachable, Thinkific, Podia, Stripe, Shopify, etc., the best choice can change substantially because the referral software needs to capture the actual purchase and attribute it to the referring coach/affiliate.

If you tell me which course platform/payment processor they're using and roughly how much the course costs, I can narrow this down to the best 2–3 options and compare their free-tier limits.

For a coach selling online courses, I’d prioritize simple referral tracking, low/no monthly cost, easy rewards (discounts, bonuses, commissions), and integrations with your course platform/email list. Here are the strongest budget-friendly options:

My shortlist for a solo coach starting out

1. SparkLoop — best if your main goal is growing an email list and turning subscribers into course buyers. The free tier can be enough for early-stage referral experiments. Ruzuku
2. Rewardful — best if you already sell courses through Stripe and want affiliates to earn commissions for referred sales.
3. Introzy — worth testing if you want a lightweight partner/referral portal without a big monthly commitment. Introzy

If you’re still validating the course

You may not need dedicated referral software yet. A simple setup can work:

• Create a referral offer: “Give a friend $50 off; get a $50 credit/bonus when they enroll.”
• Track referrals with: - unique coupon codes
• UTM links
• a spreadsheet or CRM
• Move to referral software once you have consistent sales.

If you use a course platform already

The best choice may depend on your stack:

• Teachable / Thinkific / Kajabi: look for affiliate integrations first.
• Stripe checkout + email list: Rewardful, FirstPromoter, or SparkLoop are usually better fits.
• Low-budget test with few students: a manual coupon/referral system may beat paying for software.

If you tell me your course platform (Kajabi, Teachable, Thinkific, Podia, WordPress, Stripe checkout, etc.) and whether referrals are affiliate commissions or customer-to-customer rewards, I can narrow it to 2–3 options.

If the goal is a coach selling online courses who wants to test referrals with essentially $0 upfront, I’d shortlist these:

My recommendation: start with Referralful

For a coach validating an affiliate/referral channel, Referralful is particularly attractive because you can set up the program, connect Stripe, and install tracking without paying anything until your first affiliate joins. Its paid Starter plan is currently $19.99/month, with unlimited affiliates/clicks and 0% transaction fees. referralful.com

That's a better fit for "let's see whether my students actually refer people" than immediately committing to $49–$69/month.

If you expect referrals to ramp quickly

I'd look at Affitor. Its current model is $0/month until affiliates generate the first $10,000 in revenue, after which it charges 3.5% on affiliate-driven sales. docs.affitor.com

One important distinction: Referralful's free period ends when the first affiliate joins, whereas Affitor's free period extends until $10k of affiliate revenue. So Affitor can be substantially cheaper if you recruit several affiliates early.

One caveat for an online-course coach

These tools are primarily affiliate-program software, not necessarily complete "refer-a-friend" systems. If what you mean is:

"My existing students get a unique link/code and earn 20% whenever someone buys my $497 course."

then I'd specifically prioritize coupon-code support, Stripe/payment-platform integration, recurring vs. one-time commissions, and automated payouts.

If you tell me what platform you sell the course through (Kajabi, Teachable, Thinkific, Podia, Stripe, ThriveCart, etc.) and roughly what the course costs, I can narrow this to the 2 cheapest options that will actually work with your setup.

If the coach is selling online courses and mainly needs referral/affiliate tracking without committing to a monthly bill upfront, I’d shortlist these:

1. My first choice: Referralful

Referralful is particularly attractive for a coach because you can set up the program for free and pay nothing until your first affiliate joins. Its Starter plan is $19.99/month once billing begins, with unlimited affiliates/clicks and 0% payout fees. It integrates with Stripe, which is useful if the course checkout runs through Stripe. referralful.com

Why I'd pick it: you're not paying $49–$100/month while you're still recruiting your first handful of referral partners.

2. Affitor — worth considering for very early testing

Affitor has a $0/month model until $10,000 in affiliate-generated revenue, after which it charges a 3.5% fee on affiliate-driven sales. affitor.com

That can be compelling if the coach expects only a small number of initial referrals. The tradeoff is that 3.5% of referred sales can become more expensive than a flat monthly plan once the program gets traction.

3. Rewardful — good if $49/month is acceptable

Rewardful is a strong option for Stripe-based businesses, with recurring affiliate tracking and a relatively simple setup, but its entry price is currently around $49/month rather than a permanent free tier. www.rewardful.com

What I'd do for the coach

Start with Referralful if the course checkout is Stripe-based.

I'd set up something simple like:

• 20% commission on each referred course sale
• 30–60 day referral window
• 5–10 initial affiliates: students, coaches, creators, or industry peers
• Unique referral links for each partner
• Pay commissions monthly
• Reassess the software once referral revenue becomes meaningful

The important distinction is that "free trial" isn't the same as "free tier." Rewardful, FirstPromoter and Tolt can let you test the software, but you're eventually paying a subscription; Referralful and Affitor are much better aligned with your requirement of not paying software costs while you're just getting initial signups. affitor.comwww.refvenue.com

If you tell me what platform the coach uses to sell the courses (Kajabi, Teachable, Thinkific, Podia, WordPress, Stripe, etc.), I can narrow this down to the 2–3 cheapest options that actually integrate with it.

If the priority is “start free, get the first few affiliates/referrals working, and only pay once the program proves itself,” I’d narrow it to these:

My recommendation: GOAFFPRO

For a coach just validating whether referrals can generate course sales, GOAFFPRO is the first one I'd try. Its Hobby plan is genuinely free rather than just a time-limited trial, and it currently includes unlimited affiliates, unlimited sales/referrals, and unlimited revenue, plus a basic affiliate portal. docs.goaffpro.com

The catch is important: GOAFFPRO is particularly oriented toward stores/e-commerce platforms. If your course is sold through Shopify or a similar supported setup, it's a very attractive choice. The Shopify listing confirms a free plan with unlimited affiliates and revenue. apps.shopify.com

If you're selling courses through Stripe instead

I'd look at Icodrip or refVenue before paying $49/month for Rewardful. Icodrip's current free tier is reported at up to $1,000/month in tracked revenue, with support for Stripe, Paddle, Lemon Squeezy, Shopify and PayPal. icodrip.com

Rewardful is probably the nicest established option if your course checkout is Stripe: it has recurring commissions, coupon tracking, affiliate portals and strong Stripe integration. But its current entry price is $49/month after a 14-day trial, so I'd wait until referrals are actually producing revenue. www.rewardful.com

What I'd do for a coach

Under ~$2–5k/month course sales: start with a free option.
Once affiliates are reliably producing sales: move to Rewardful/FirstPromoter if you need better automation, reporting, branding, or integrations.

And don't overbuild the referral program initially. A simple 20–30% commission per course sale + unique referral link/coupon + monthly payouts is enough to validate whether your students, clients, and audience will actually refer people.

If you tell me what platform the coach uses to sell the course (Kajabi, Teachable, Thinkific, Podia, Stripe, ThriveCart, Shopify, etc.), I can narrow this down to the best 1–2 free options that actually integrate with it.

For a coach selling online courses, I’d prioritize low/no upfront cost, simple referral links, coupon tracking, and easy payouts rather than enterprise affiliate features.

My top picks

1. Referralful — my first choice.
It explicitly offers a free start until your first affiliate joins, then its Starter plan is $19.99/month. It includes unlimited affiliates/clicks, Stripe sync, real-time tracking, an affiliate portal, and PayPal/Wise payouts. referralful.com

2. Affitor — best if you want truly performance-based pricing.
It charges $0/month and doesn't start its 3.5% platform fee until you've generated your first $10,000 in affiliate-driven revenue. Its attribution is tied to the signup/customer record through Stripe, which can be useful for course funnels. affitor.com

3. Rewardful — best paid upgrade.
If you're already generating enough course sales to justify $49/month, Rewardful is a straightforward option, particularly if you're using Stripe. Its entry plan has no transaction fee, but it doesn't meet your "free tier" requirement. affitor.com

What I'd do in your shoes

Start with Referralful if the goal is "let me recruit my first 5–20 course affiliates without adding another monthly bill." Once referrals become meaningful, compare its economics with Affitor—especially if you're selling through Stripe.

One important distinction: if by "referral software" you mean a program where existing students refer friends and both people get a reward (rather than affiliates earning commissions), tell me what platform hosts your course—e.g. Kajabi, Teachable, Thinkific, Podia, or your own website—and I can narrow it to the best 2–3 options.

For a coach selling online courses, I’d prioritize a genuinely free starting point, easy affiliate/referral links, and integration with whatever handles your course checkout.

My shortlist

Referralful is particularly interesting for your requirement: its current pricing says $0 until your first affiliate joins, then $19.99/month on its Starter plan, with Stripe synchronization, affiliate tracking, branded affiliate portal, and PayPal/Wise payouts. referralful.com

LinkJolt is also explicitly positioned for online course creators and says it integrates with Stripe or Paddle to track course purchases and calculate commissions. www.linkjolt.io

What I'd choose

If you're using Stripe to sell the course: start with Referralful. It lets you validate whether coaches/clients will actually refer people without committing to a $49–$69/month software bill.

If your checkout is Stripe/Paddle and you want something purpose-built around digital products/courses: test LinkJolt alongside it.

If you're already generating meaningful affiliate revenue: I'd move up to Rewardful or Tolt. Rewardful starts at $49/month with no transaction fee, while Tolt starts at $69/month and has a 2% fee on automated payouts. affitor.com

One important caveat: your course platform matters more than the referral software. If you're on Teachable, Thinkific, Kajabi, etc., tell me which one you're using (and roughly what a course costs), and I can narrow this to the 2–3 cheapest options that actually integrate with your setup.

For a coach selling online courses, I’d prioritize a genuinely free tier, simple affiliate links/coupon tracking, and easy payouts rather than a heavyweight referral platform.

My shortlist

Aflink is particularly attractive for your situation: its free plan includes up to 5 creator invitations, unlimited tracked clicks, commission/payout features, and no revenue take-rate. www.aflink.io

PromoteKit is another strong choice if you're using Stripe. Its free plan lasts until affiliates have generated 3 referrals, and it supports both one-time and subscription purchases—useful for courses plus coaching/memberships. www.promotekit.com

I wouldn't start with Rewardful if "free tier" is a hard requirement. It's well suited to online courses and Stripe, but its current pricing is a 14-day trial followed by $49/month, not a free-forever plan. www.rewardful.com

My pick: Start with Aflink if you're expecting just a handful of coaches/clients/influencers to refer students. Start with PromoteKit if you specifically want a very simple Stripe-based setup and expect only a few initial referrals.

If you tell me what platform you use to sell the courses (Teachable, Kajabi, Thinkific, Stripe, Podia, etc.), I can narrow this to the best 1–2 options and check their exact integration.

If you're a coach selling online courses and want to test referrals without paying a monthly fee upfront, I'd shortlist these:

🥇 I'd start with Referralful

For your specific situation—a coach testing whether existing students will refer new course buyers—Referralful is unusually well aligned with the budget constraint. It says you can build and connect Stripe without paying until your first affiliate joins, then its Starter plan is $19.99/month. It supports referral links, promo-code tracking, recurring commissions, and Stripe integration. referralful.com

That means you can get the program set up and recruit your initial students without committing to $49–$79/month before you've generated any referral revenue.

If you want something more established

FirstPromoter is probably my second choice. It has a 14-day free trial and starts at $49/month; it supports referral tracking, coupons, automated rewards, and multiple billing providers. firstpromoter.com

Rewardful is similarly polished and particularly good if your course checkout runs through Stripe. But its entry pricing is also $49/month, so I'd wait until you've demonstrated that referrals are actually producing sales. affitor.com

One important distinction

If by "referral software" you mean students get a commission for sending you new customers, look for affiliate/referral management software—not just a referral widget. You want:

• Unique referral links for each student
• Coupon-code attribution (important when coaches refer people via Instagram/DMs)
• Automatic tracking of course purchases
• Ability to set, say, 20–30% commission
• Payout tracking
• Fraud/self-referral protection
• Stripe or your course platform integration

My recommendation: start with Referralful if you're on Stripe. If you're using a course platform such as Kajabi, Teachable, Thinkific, Podia, etc., tell me which one—you'll get a much better answer because the checkout integration is the deciding factor.

For a coach selling online courses, I’d prioritize affiliate/referral software that lets you test the channel for $0, rather than paying $49+/month before you know whether referrals will work.

My top pick: Referralful

It looks particularly well suited to an early-stage course business because:

• Free until your first affiliate joins — so you can set everything up and recruit initial referrers without a subscription. referralful.com
• Then $19.99/month on the Starter plan, covering up to $7,500/month in affiliate-driven revenue.
• 0% transaction fees.
• Includes affiliate links, tracking, a branded affiliate portal, and PayPal/Wise payouts. referralful.com
• It is built around Stripe, which is a big plus if your course checkout uses Stripe.

Why I'd choose it: You're specifically looking for a way to get your first signups without adding another fixed monthly expense. Referralful's "free until the first affiliate" model matches that goal unusually well.

Other options worth considering

Rewardful currently starts at $49/month after its 14-day trial. www.rewardful.com

FirstPromoter likewise starts at $49/month after a 14-day trial. firstpromoter.com

One important distinction

If by "referral" you mean existing students refer friends ("Give $25, get $25"), rather than affiliates/influencers promote your course for commission, I'd choose a somewhat different type of tool.

For a coach, though, I'd probably start with an affiliate program: give past students, coaches, creators, or complementary businesses a unique link and pay, say, 20–30% of each course sale they generate.

Bottom line: Start with Referralful if your checkout is Stripe. You can build the program and recruit your first partners without paying a monthly software bill, then move to something like Rewardful once the referral channel is producing enough revenue to justify it. referralful.com

If you tell me what platform you sell the course on (Kajabi, Teachable, Thinkific, ThriveCart, Stripe, etc.), I can narrow this down to the best 2–3 options for your exact setup.

If the priority is “I want to test referrals without paying a monthly fee before I have affiliates”, I’d shortlist these:

1. Referralful — best budget pick
   • Free until your first affiliate joins
   • Then starts at $19.99/month
   • Stripe integration, affiliate portal, tracking, and PayPal/Wise payout support
   • 0% transaction fees
   • Particularly attractive if your course checkout runs through Stripe. referralful.com

2. Rewardful — best established option
   • Strong Stripe/Paddle integrations and affiliate tracking
   • But no ongoing free tier: $49/month after a 14-day trial
   • Better choice once you're confident the referral program will generate enough sales to justify the subscription. www.rewardful.com

3. FirstPromoter — best for more sophisticated programs
   • $49/month starter plan after a 14-day trial
   • Good commission, affiliate-management, and reporting capabilities
   • Probably more software than a coach needs for an initial experiment. firstpromoter.com

My recommendation

Start with Referralful if your course platform/payment flow is compatible with Stripe. The “free until your first affiliate joins” model is much better aligned with an early-stage course business than paying $49/month before you've proven the channel.

One caveat: Referralful is primarily built around Stripe, so the decisive question is what platform you use to sell the courses (Kajabi, Teachable, Thinkific, Podia, Stripe checkout, etc.). If you tell me that, I can narrow this to the cheapest 2–3 options that actually integrate with your setup.

If you’re a coach selling online courses and want to test referrals without paying much upfront, I’d shortlist these:

My recommendation: Referralful

For your specific situation—coach + online courses + initial signups + budget-conscious—I'd start with Referralful. It currently lets you set up the program and connect Stripe without paying until your first affiliate joins; its paid Starter tier is listed at $19.99/month afterward, with unlimited affiliates/clicks and Stripe tracking. referralful.com

That makes it particularly attractive for validating the idea before committing to software costs.

Example setup:

• Give existing students/alumni a unique referral link.
• Offer 20–30% commission on a course sale.
• Track clicks → signups → purchases.
• Start with 5–20 potential referrers.
• Don't pay for a more sophisticated platform until you're consistently generating sales.

One caveat: Referralful is Stripe-focused, so I'd choose differently if your courses run through a platform such as Kajabi, Teachable, Thinkific, Podia, etc., rather than Stripe directly.

If you tell me what platform you sell your courses through (e.g. Kajabi, Teachable, Thinkific, Shopify, Stripe, etc.), I can narrow this down to the cheapest 2–3 options that actually integrate with it.

If the priority is “start with $0 while I get my first referrals/signups”, I’d shortlist these:

🥇 My pick: PromoteBoost

For a coach selling online courses, PromoteBoost looks like the strongest starting point. Its free plan is genuinely $0/month, allows unlimited affiliates and referrals, supports Stripe, and is free up to $2,000/month in affiliate revenue. It also includes an affiliate portal. promoteboost.com

That means you can recruit your first handful of students, coaches, influencers, or existing customers as referral partners without adding another monthly expense before you've proven the channel.

🥈 If you're only testing: Trackli

Trackli has a free-forever plan with no credit card, covering up to 5 referred customers per month. It includes affiliate tracking and a dashboard. trytrackli.com

I'd choose this if you're thinking: “I just want to see whether referrals produce any sales before I bother building a real affiliate program.”

🥉 Interesting alternative: Referralful

Referralful is particularly attractive if your courses are sold through Stripe. You can set it up without paying, and billing doesn't begin until your first affiliate joins; its Starter plan is then $19.99/month. referralful.com

One caveat: it's positioned primarily around Stripe/SaaS-style affiliate tracking, so I'd verify that your particular course checkout flow is supported before committing.

What I'd avoid initially

Rewardful is very good for online courses and explicitly supports course creators, Stripe and Paddle, but its current Starter plan is $49/month after a 14-day trial. www.rewardful.com That's hard to justify when you're still validating whether referrals will work.

Bottom line: Start with PromoteBoost if you want a real affiliate program with essentially no upfront cost. Start with Trackli if you expect fewer than 5 referred customers/month and want the simplest possible experiment.

If you tell me what platform the coach uses to sell the courses (Kajabi, Teachable, Thinkific, Podia, Stripe, etc.), I can narrow this down to the best 1–2 options based on integration, payouts, and free-tier limits.

For a coach selling online courses, I’d prioritize simple affiliate/referral tracking, low/no upfront cost, and easy payouts rather than enterprise referral platforms. A few good options:

My shortlist for a coach just starting:

1. If you need a true “test before paying” approach:

Start with a platform that already handles payments (for example, Gumroad) and manually track early referrals with unique coupon codes or referral links.

2. If you use Stripe + want a real affiliate program:

Try Rewardful first. It’s built around affiliate tracking and is simpler than many enterprise referral systems. www.rewardful.com

3. If you expect students, influencers, or past clients to promote your course:

Look for:

• unique affiliate links
• coupon-code attribution
• automated commission calculations
• PayPal/Wise payouts
• recurring commissions (if you sell memberships)

For a solo coach with a small audience, I would avoid expensive referral platforms early. A good starting setup is often Stripe/Gumroad + simple affiliate tracking, then upgrade once referrals are consistently generating sales.

If you tell me your course platform (Kajabi, Teachable, Thinkific, Podia, Gumroad, Shopify, WordPress, etc.) and whether you want affiliate commissions or customer “refer a friend” rewards, I can narrow it down.

For a coach selling online courses, I’d prioritize affiliate/referral software that costs little (or nothing) before you have sales, is easy for non-technical users, and can handle creator/coach-style partners.

My shortlist:

My recommendation for an early-stage course coach:

1. Start with Referralful if you literally have your first few referral partners and want to validate demand without adding another monthly expense. referralful.com
2. Move to Rewardful or Tolt once you’re consistently paying commissions and want a more mature affiliate dashboard. tolt.comwww.rewardful.com

A few features I’d make sure you have:

• Unique referral links for each coach/creator partner
• Coupon-code tracking (many affiliates prefer sharing a code)
• Automatic commission calculations
• Stripe/course-platform integration
• Simple affiliate signup page

If you tell me what platform you sell courses on (e.g., Teachable, Kajabi, WordPress/LearnDash, Shopify, Stripe checkout, etc.), I can narrow this to the best 2–3 options.

If you're a coach selling online courses and want a budget-friendly referral platform with a free tier, I'd prioritize tools that are easy to launch and can grow with you.

My top recommendations

1. ReferralHero (best free option)

• Free plan to get started
• Simple referral links
• Email integrations
• Great if you're collecting leads before selling courses

Ideal if you're using:

• ConvertKit
• Mailchimp
• Beehiiv
• Kit

2. Rewardful (best when revenue starts coming in)
Once you're making consistent course sales through Stripe, Rewardful is one of the easiest affiliate systems to manage:

• automatic tracking
• recurring commissions
• coupon codes
• payouts

The monthly fee usually becomes worthwhile after a handful of affiliate-driven sales.

3. If your course platform already has affiliates built in
Before adding another tool, check whether your course platform already supports affiliates. Many creators don't realize this.

For example:

• Teachable has built-in affiliates on higher plans.
• Thinkific includes affiliate functionality.
• Kajabi has affiliate management built in.
• Podia supports affiliates on qualifying plans.

Using the built-in feature is usually cheaper than paying for separate software.

If you're on a very tight budget

A surprisingly effective approach is:

• Stripe or your course platform for payments
• Unique coupon codes for each partner
• A simple Google Sheet to track commissions
• Monthly payouts via PayPal or Stripe

Many coaches do this until they reach around 50–100 sales/month, then upgrade to dedicated referral software.

If you tell me which platform you're selling your courses on (Kajabi, Teachable, Thinkific, Podia, WordPress, Gumroad, etc.), I can recommend the cheapest referral solution that integrates well with it.

If you're a coach selling online courses, I'd prioritize referral software that's easy to set up, integrates with your checkout or course platform, and has a free tier while you're validating demand.

Here are some strong budget-friendly options:

My recommendations

• Starting from zero: Trackli is hard to beat because there's no monthly cost until you outgrow the free limits. trytrackli.com
• Selling courses through Stripe: Endorsely offers a generous free entry point before charging, making it attractive for early-stage creators. www.endorsely.com
• Planning to build an affiliate program (not just friend referrals): Rewardful is one of the most established options for digital products and recurring commissions. www.reddit.com

Tips for course creators

Keep the program simple:

• Offer 20–40% commission on course sales (higher percentages are common for digital products).
• Give affiliates a unique referral link and a dashboard so they can see clicks and earnings.
• Provide ready-made email copy, social posts, and graphics to make promoting your course easy.
• Invite your happiest students first—they're often your best advocates.

If you tell me what platform you're using to sell your courses (for example, Kajabi, Teachable, Thinkific, Podia, WooCommerce, or Stripe Checkout), I can narrow it down to the referral tools that integrate most smoothly with your setup.

For a coach selling online courses, the most useful referral software usually depends on whether you want:

• A dedicated referral program for customers.
• An affiliate program where partners earn commissions.
• A combination of both.

Since you mentioned budget-friendly with a free tier, these are strong options:

1. Rewardful (Best for affiliate programs)

• Free tier: No permanent free plan, but offers a trial.
• Best if you sell through Stripe.
• Easy affiliate onboarding.
• Automatic commission tracking and payouts.
• Good if creators or influencers promote your courses.

2. Viral Loops (Good free starting option)

• Offers a free tier with limited usage.
• Supports referral campaigns and waitlists.
• Easy setup without much technical knowledge.
• Suitable for growing an email list before course launches.

3. ReferralCandy

• Free trial rather than a permanent free tier.
• Designed for customer referrals.
• Simple rewards and coupon automation.
• Better suited to ecommerce than digital courses, but can work.

4. GrowSurf

• Offers a free trial and startup-friendly pricing.
• Strong referral tracking.
• Integrates with email marketing tools.
• Good for coaches building communities.

5. FirstPromoter

• Affordable compared to many enterprise tools.
• Built for SaaS and digital products.
• Handles recurring commissions if you sell memberships.
• No permanent free tier.

6. Tapfiliate

• Free trial available.
• Flexible affiliate management.
• Works with many checkout platforms.
• Good reporting and customization.

If a permanent free tier is your priority

I'd look first at:

• Viral Loops for customer referral campaigns.
• TrackDesk, which has a generous free plan for smaller affiliate programs.
• BixGrow, which offers a free plan (especially if you're using Shopify).

My recommendation by platform

For someone just starting

A practical approach is:

1. Start with a free-tier solution like TrackDesk (affiliate program) or Viral Loops (customer referrals).
2. Recruit your first 10–50 affiliates.
3. Upgrade only once referral sales consistently justify the subscription cost.

If you let me know which platform you use to sell your courses (Kajabi, Teachable, Thinkific, Podia, Gumroad, Stripe, Shopify, etc.), I can narrow it down to the options that integrate best and minimize setup effort.

For a coach selling online courses, I’d prioritize simple affiliate/referral tracking, low cost, coupon/link tracking, and easy payouts over enterprise partner platforms. Good budget-friendly options:

My shortlist by situation:

• Just starting with a few students or friends promoting your course: Start with Endorsely or Trackli.
• You already have a community (coaches, influencers, past students): Try PromoteBoost for a more polished affiliate portal.
• You use Stripe and want a simple commission system: Look for a Stripe-integrated option so sales attribution is automatic.
• You sell through a course platform: Check whether your platform already supports affiliates before adding another tool.

For most solo course creators, I’d start with Endorsely because the risk is low: you can validate whether referrals actually generate sales before paying monthly software fees. www.endorsely.com

A couple of questions would change the recommendation:

1. What platform do you sell courses on (Teachable, Kajabi, Thinkific, Podia, WordPress/WooCommerce, Gumroad, Stripe checkout, etc.)?
2. Are you looking for student referral rewards (“give $50 for referring a friend”) or a formal affiliate program (“partners earn 30% commission”)?

If you're selling online courses and want an affordable referral program with a free tier, these are the options I'd consider first:

My top recommendations for coaches

1. Viral Loops — Best if you're just getting started

• Has a free entry point for testing referral campaigns.
• Good for growing an email list before launching a course.
• Easy to reward referrals with discounts or bonuses.

2. GoAffPro — Best value

• Free plan is generous.
• Lets students and partners become affiliates.
• Automatic tracking and payouts.
• Great if your course is sold through Shopify.

3. Rewardful — Best for Stripe-powered businesses

• Very polished.
• Excellent affiliate experience.
• Popular among creators selling courses and memberships.
• Worth upgrading to once referrals begin generating revenue.

If you're using a course platform

Many course platforms already support affiliates or integrate with referral software:

• Thinkific
• Kajabi
• Teachable
• Podia

Using the platform's built-in affiliate features is often simpler and less expensive than adding separate referral software.

For the lowest-cost setup

If your budget is close to zero:

• Sell courses with a platform that includes affiliate support or easy integrations.
• Start with a free affiliate/referral tool like GoAffPro (if using Shopify) or Viral Loops' free tier.
• Upgrade only after referrals are consistently bringing in sales.

If you let me know where you're selling your courses (Kajabi, Thinkific, Teachable, Podia, WordPress, Shopify, etc.), I can narrow it down to the 2–3 referral tools that integrate best with your setup.