ChatGPT answers, unedited

For a small merch team selling custom products both at live events and online, I’d narrow it to Shopify vs. Square, with Shopify probably the better long-term fit.

My pick: Shopify

Shopify

For your particular model, I'd lean Shopify + Shopify POS. The big advantage is that the ecommerce store and POS are actually one commerce system: products, variants, customers, orders and inventory are synchronized between your website and physical sales. Shopify specifically supports selling through pop-ups and other temporary locations. www.shopify.com

That's particularly useful for merch because you might have:

• 20 T-shirt designs × 5 sizes × 4 colors
• limited-edition event merch
• different inventory allocated to different events
• online preorders
• products that are available online but not at an event
• event-specific pricing or bundles
• inventory that needs to decrement immediately when someone buys at a booth

Shopify lets you manage inventory by location, and sales at one location update that location's stock. help.shopify.com

It also gives you considerably more room to build out the online side as the merch business grows.

The dark horse: Square

Square

If most of your revenue is currently coming from events and the website is relatively simple, I'd seriously consider Square.

Square's POS is particularly attractive for a small team because you can get started cheaply, and Square Online integrates directly with the POS, including inventory and customer information. squareup.com

Square's free online plan currently has no monthly fee, with online processing listed at 2.9% + 30¢ per transaction. squareup.com

So I'd frame the decision this way:

Choose Shopify if:

• Online sales are strategically important
• You want a really good branded merch store
• You expect lots of SKUs/variants
• You want email marketing, apps, subscriptions, drops, etc.
• You expect the business to grow substantially
• You want one system to become the backbone of the business

Choose Square if:

• Events/pop-ups are the core business
• You want the simplest possible POS
• You want to minimize monthly software costs
• Your online store is more of a supporting channel
• You don't need sophisticated ecommerce functionality yet

One thing I'd not do

I wouldn't start with WooCommerce + a separate POS unless you have a strong reason to own/control the website technically. You can make it work, but for a small team the integration and maintenance burden isn't worth it when Shopify and Square already solve the online + physical problem natively. Current comparisons also put Shopify and Square among the strongest small-business options, with Shopify particularly strong for integrated ecommerce/POS and Square for inexpensive omnichannel retail. fitsmallbusiness.com

If you tell me roughly (1) annual sales, (2) how many SKUs/variants you have, (3) how many live events per month, and (4) whether you're already using Shopify/Square/another website, I can give you a much more specific recommendation—including what I'd use for the actual event setup and the likely monthly/payment costs.

For a small team selling custom merch at live events + online, I would focus less on “the best POS” and more on one source of truth for inventory, variants, customers, and orders. Merch businesses usually get hurt by selling the last hoodie at a show while the website still thinks it is available.

My shortlist would be:

Shopify Square Lightspeed### My recommendation by business stage

If you are building a merch brand:

Choose Shopify + Shopify POS.

It is usually the strongest fit if you:

• Sell collections online
• Run preorders/drops
• Have lots of SKUs (shirt sizes, colors, designs)
• Want customer accounts, email marketing, abandoned-cart recovery, etc.
• Expect online sales to become a major channel

Shopify POS is designed to keep in-person and online sales connected, including pop-ups and events. Shopify Shopify

If you mostly sell at shows, festivals, and markets:

Choose Square.

It is attractive when your workflow is:

• Load a van
• Set up a booth
• Take hundreds of quick transactions
• Go home and reconcile sales

Square is popular with small mobile sellers because it is quick to deploy and its POS and online tools are tightly integrated. Square

If you have thousands of units and operational complexity:

Look at Lightspeed.

It becomes more compelling when you need:

• Better inventory purchasing
• Multiple warehouses/locations
• More advanced retail reporting
• Larger staff workflows

Lightspeed## For a custom merch team, I would also prioritize:

• Barcode scanning (especially for events)
• Offline selling if venues have poor Wi-Fi
• Variant management (size/color/design)
• Easy inventory counts after events
• Customer capture at checkout (email/SMS)
• Returns/exchanges across channels
• Ability to create bundles (shirt + hat + sticker pack)

A practical setup many small merch companies use:

• Shopify as the “brain”
• Shopify POS on iPads/phones at events
• Barcode labels on every item
• Card readers + a backup hotspot
• A simple inventory routine after each event

If you tell me:

1. roughly how many events you do per year,
2. monthly online sales volume,
3. number of SKUs (designs × sizes × colors), and
4. whether you print/fulfill yourselves or use a fulfillment partner,

I can narrow this to a specific recommendation.

For a small team selling custom merch both at live events and online, I’d put Shopify and Square at the top of the shortlist, with the choice depending mainly on whether your business is ecommerce-first or event/POS-first.

My shortlist

1. Shopify — my first choice

shopify.com

I'd lean Shopify if your website and online sales are an important part of the business.

The big advantage is that your online store and event POS are essentially the same commerce system. Inventory, products, variants, customers and orders stay synchronized across your website and physical selling locations. Shopify specifically supports mobile/event selling and temporary pop-up locations. Shopify Shopify

That's particularly attractive for custom merch because you might have:

• T-shirts in multiple sizes/colors
• Hoodies, hats, posters, etc.
• Limited-edition event merchandise
• Different pricing/promotions at events
• Inventory split between your warehouse, online store and event stock

Shopify can track those variants and locations centrally, and its POS can run on mobile hardware at events. Shopify Shopify

I'd choose Shopify if: you're trying to build a real merch brand rather than simply process transactions.

2. Square — potentially the better starting point

squareup.com

Square is worth serious consideration if live events are the heart of the business and you want something that a small team can get running quickly.

Square's POS and online store share inventory, orders and customer information, and Square supports selling online, pickup, shipping and delivery. Square Square

It's also designed around the kind of quick retail transaction you'd encounter at a concert, festival, market, pop-up, etc.

The tradeoff is that I generally prefer Shopify's ecommerce ecosystem and storefront capabilities if the online side is going to become substantial.

3. Lightspeed — keep it in the second round

lightspeedhq.com

I'd look at Lightspeed if you're going to have a large SKU count, complicated inventory, multiple locations, purchasing/warehouse requirements, or eventually a more sophisticated retail operation.

For a small merch team, though, I wouldn't start there unless you already know you need its deeper retail functionality.

What I'd do in your situation

I'd narrow it to:

Shopify POS vs. Square Retail.

And I'd make the decision based on this question:

Is the website going to be the center of the business, or are live events going to be the center?

• Website + social + online orders + events → Shopify
• Events/pop-ups + occasional online orders → Square
• Complex inventory/multiple locations → consider Lightspeed

One other thing I'd pay particular attention to: how each handles inventory allocated to an event. For example, if you take 150 shirts to a festival, sell 87, and bring 63 home, you want that process to be painless and have the remaining 63 immediately available to your online store again. Shopify's multi-location inventory is particularly well suited to this model. Shopify Shopify

If you tell me roughly (1) annual sales, (2) number of live events per year, (3) number of SKUs/variants, (4) whether you already have a website, and (5) how many people will run the POS, I can narrow this down to the best 2–3 setups and compare the actual monthly + payment costs and event hardware.

Square's POS and online store share inventory, orders and customer information, and Square supports selling online, pickup, shipping and delivery. Square Square

It's also designed around the kind of quick retail transaction you'd encounter at a concert, festival, market, pop-up, etc.

The tradeoff is that I generally prefer Shopify's ecommerce ecosystem and storefront capabilities if the online side is going to become substantial.

3. Lightspeed — keep it in the second round

lightspeedhq.com

I'd look at Lightspeed if you're going to have a large SKU count, complicated inventory, multiple locations, purchasing/warehouse requirements, or eventually a more sophisticated retail operation.

For a small merch team, though, I wouldn't start there unless you already know you need its deeper retail functionality.

What I'd do in your situation

I'd narrow it to:

Shopify POS vs. Square Retail.

And I'd make the decision based on this question:

Is the website going to be the center of the business, or are live events going to be the center?

• Website + social + online orders + events → Shopify
• Events/pop-ups + occasional online orders → Square
• Complex inventory/multiple locations → consider Lightspeed

One other thing I'd pay particular attention to: how each handles inventory allocated to an event. For example, if you take 150 shirts to a festival, sell 87, and bring 63 home, you want that process to be painless and have the remaining 63 immediately available to your online store again. Shopify's multi-location inventory is particularly well suited to this model.

Yes. For a small merch business selling both at live events and online, I’d narrow it to Shopify vs. Square, with Lightspeed as the “we’re getting more sophisticated” option.

My shortlist

Shopify is particularly compelling because its POS and ecommerce are designed as one system, with inventory and customer data synchronized between channels. Current comparisons also rate it especially highly for omnichannel/ecommerce businesses. www.shopify.comwww.shopify.com

Why I'd lean Shopify for custom merch

Your business has an unusual combination of requirements:

Online

• Product variants: size/color/design
• Limited-edition drops
• Discount codes
• Shipping
• Customer accounts
• Email/marketing integrations

At events

• Fast checkout
• Tap/chip payments
• Phone/tablet-based selling
• Potentially multiple sellers simultaneously
• Spotty Wi-Fi/offline capability
• Inventory needs to come out of the same pool as online inventory

That last point is the big one. You don't want someone buying the last 2XL at an event while your website still says it's available.

Shopify is very good at making the website and POS two doors into the same inventory/order system. POS Lite is included with Shopify plans, while POS Pro adds more advanced retail capabilities and is currently $89/month/location. www.shopify.comwww.shopify.com

When I'd choose Square instead

I'd seriously consider Square if most of your revenue is at events and the website is relatively simple.

Square has a free POS tier, inexpensive hardware, mobile selling, inventory and an online store. It also has good offline capabilities, which can matter at festivals, venues and pop-ups where connectivity isn't dependable. fitsmallbusiness.com

So:

70%+ events / simple online store → Square

50/50 or growing ecommerce → Shopify

Complex inventory / multiple locations / lots of SKUs → Lightspeed

One thing I'd pay particular attention to

For live events, don't just demo the software sitting in an office. Actually simulate an event.

I'd want to see:

1. Two people selling simultaneously from phones/tablets.
2. A customer buys the last item at the event.
3. Someone immediately tries to buy that item online.
4. Wi-Fi goes down.
5. Customer wants to exchange something bought online at an event.
6. You create a new merch design and its size/color variants.
7. You need to count remaining inventory after the event.
8. You need to know “How much did we actually make at Event X?”

Those workflows will tell you far more than a generic POS demo.

My starting recommendation: I'd demo Shopify POS first and Square second. For a small custom-merch operation, I suspect Shopify will give you the best long-term combination of ecommerce, event selling and inventory without requiring you to stitch several systems together. www.shopify.com

If you tell me roughly (a) annual sales, (b) number of events/month, (c) number of SKUs, (d) whether you sell mostly apparel, and (e) whether you need QuickBooks, I can narrow this down to the best 2–3 setups and estimate the monthly + per-transaction cost for each.

Yes. For a small merch business selling at live events + online, I’d narrow the field pretty quickly to Shopify, Square, and Lightspeed.

My shortlist

1. Shopify — probably where I'd start

For your particular model, Shopify is my first choice.

Shopify POS is designed to keep your physical and online sales in one system, with inventory syncing across locations and sales channels in real time. It also supports mobile POS hardware, customer profiles, returns/exchanges, QR codes that can send an event customer to an online purchase, and ship-from-store workflows. www.shopify.comwww.lightspeedhq.com

That's particularly useful for merch at events:

Example: You bring 200 shirts to a festival. You sell 130 through the POS. Shopify automatically knows you have 70 left for your website. Someone at the event wants a size/color you didn't bring—you can potentially send them to your online store instead of losing the sale.

The bigger advantage is that Shopify is extremely strong on the ecommerce side. If online sales eventually become a major part of the business, you won't outgrow the storefront nearly as quickly.

I'd choose Shopify if:

• Online sales are important or expected to grow
• You have lots of apparel variations (size/color)
• You want a polished branded website
• You sell at lots of temporary events/pop-ups
• You want customers' online and in-person purchases tied together
• You may eventually add wholesale, marketplaces, email marketing, etc.

2. Square — the one I'd test first for simplicity

Square is particularly attractive if your priority is "we need to show up at an event, take payments, and not have this become a technology project."

Square's catalog is shared between its POS and website, and inventory can update from POS and online sales. It also supports mobile selling and offline payments, which is a big deal at live events where Wi-Fi can be questionable. squareup.com

Square also has online-store functionality, shipping, pickup, customer accounts, discounts, and inventory tools. squareup.com

I'd choose Square if:

• You're a very small team
• Most revenue initially comes from events
• You want minimal setup/administration
• Your ecommerce needs are relatively straightforward
• Keeping software costs down matters
• You don't need a highly sophisticated ecommerce operation

One interesting possibility is starting with Square and moving to Shopify later, but I'd avoid designing a complicated two-system setup unless there's a specific reason.

3. Lightspeed — powerful, but probably more than you need initially

Lightspeed is worth considering if your merchandise operation gets inventory-heavy. It has strong support for variants, composite/bundled products, purchase orders, stock transfers, receiving, barcode labels, multiple inventory locations and an ecommerce storefront. www.lightspeedhq.com

I'd lean toward it if you're going to have a lot of SKUs, significant inventory, multiple locations, or more sophisticated purchasing/retail workflows.

For a small team doing pop-ups and online sales, though, I'd probably rather spend the operational complexity budget on the business itself.

What I'd actually do in your shoes

Start by demoing Shopify POS and Square side-by-side.

The decision isn't really about which has the most features. It's about where you want your "system of record" to live:

Shopify:
Online store ←→ Shopify ←→ Event POS

Square:
Online store ←→ Square ←→ Event POS

Both can give you the important thing: one product catalog + one inventory picture + one customer/order history.

And for custom merch, I'd specifically test these five workflows before signing up:

1. Sell a shirt at an event → inventory immediately decreases.
2. Sell that same shirt online → event inventory reflects the online sale.
3. Customer wants an item you don't have at the event → can you easily place/send them an online order?
4. Customer returns an online purchase at an event → how painless is the return?
5. You have 30 shirts × 5 sizes × 4 colors → how easy is it to manage the variants?

If ecommerce is going to be a serious growth channel, I'd pick Shopify.

If live events are the core business and online is mainly a complementary storefront, I'd give Square a very serious look.

If you tell me roughly (a) annual sales, (b) number of events/month, (c) number of merch SKUs/variants, (d) whether you manufacture the merch yourselves or use a decorator/fulfillment company, and (e) whether you already have a website, I can narrow this down to the best 1–2 setups and estimated monthly costs for your situation.

For a small merch team selling at live events + online, I’d put Shopify at the top of the shortlist, with Square as the main alternative.

The key is that you want one product catalog, one inventory pool, one customer/order database, and one reporting system—not a POS bolted onto a separate ecommerce site.

My shortlist

1. Shopify — my first choice

For your particular model, Shopify's biggest advantage is that the ecommerce store and POS are actually part of the same commerce system. A sale at a concert/festival/pop-up can reduce the same inventory that is available on your website. Shopify explicitly supports pop-ups, markets and other temporary selling locations, and its POS syncs orders and inventory with the online store. www.shopify.comsquareup.com

That becomes particularly valuable with merch because you'll likely have things like:

• T-shirts by size/color
• Hoodies
• Hats/accessories
• Limited-edition event merch
• Bundles
• Different pricing/promotions
• Products that sell both online and at events

Shopify can handle those variants while keeping inventory synchronized. You can also use mobile POS hardware—or even an iPhone for certain event setups—rather than building a traditional countertop register. www.shopify.com

I'd choose Shopify if: the online side of the business is important and you expect the merch operation to grow.

2. Square — very compelling alternative

Square is worth serious consideration if you're a small team and want to get operational quickly without spending much on software.

Square combines POS, inventory, online selling, payments and customer management, and its inventory can update across in-person and online channels. api.squareup.com

It's particularly attractive if your business is event-first:

Set up table → turn on Square → sell merch → inventory updates → go home.

Square also offers an online store, so you don't necessarily need to maintain a separate ecommerce platform. squareup.com

I'd choose Square if: the majority of your sales happen at events and your website is primarily a straightforward online storefront.

Shopify vs. Square for your use case

I'd frame the decision this way:

Choose Shopify if you think:

"We're building a merch/ecommerce brand that happens to sell at events."

Choose Square if you think:

"We're an event-selling business that also sells merchandise online."

That's the biggest distinction.

Shopify's ecommerce ecosystem is considerably stronger, while Square is exceptionally attractive for straightforward in-person selling and small-business operations. A current 2026 small-business POS comparison likewise puts Square at the top for overall value while identifying Shopify as particularly strong for ecommerce/multichannel selling. fitsmallbusiness.com

One thing I'd pay a lot of attention to

For live events, don't just compare monthly software prices. Test the actual checkout workflow.

You want to know:

1. Can two or three staff members sell simultaneously?
2. Can you use phones/tablets rather than a bulky register?
3. What happens if the venue's Wi-Fi is bad?
4. How quickly can someone check out a customer?
5. Can you easily count/adjust inventory before and after an event?
6. Can you see event-by-event profitability/sales?
7. Can an event-specific location be created so inventory doesn't get confused with your warehouse?
8. Can customers buy something at the event and later shop online using the same customer record?
9. How easy is it to handle returns/exchanges?
10. What are the actual card processing fees for your expected volume?

For a merch operation, those details can matter more than whether the ecommerce site has 50 more features.

If you give me roughly your expected annual sales, number of live events/month, number of SKUs, average transaction size, and whether you're selling merch for yourselves or for artists/brands, I can narrow this down to the 2–3 platforms I'd actually demo and tell you what I'd pick.

For a small team selling custom merch both at live events and online, I’d put Shopify at the top of your shortlist, with Square as the main alternative.

My ranking

1. Shopify — probably where I'd start

Shopify is particularly well suited to the "we have a website, but also show up at a festival/concert/trade show and sell out of the back of a van" model.

Shopify POS is designed for selling at pop-ups and events, while keeping the same products, inventory, customers and orders connected to your online store. www.shopify.com

For merch specifically, the useful pieces are:

• One product catalog for online and events
• Size/color variants with individual SKUs and inventory
• Inventory deducted when you sell something at an event
• Online inventory reflects event sales
• Mobile POS for selling away from a permanent store
• Barcode scanning
• Customer profiles and purchase history
• Discounts, gift cards and promotions
• Online ordering and shipping
• Ability to sell through social channels/marketplaces
• More sophisticated apps if you eventually need custom merch workflows

Shopify specifically supports inventory across locations, which is useful if you think of "Event A," "Event B," "home/warehouse," and "online" as different inventory locations. www.shopify.com

Shopify POS

The downside: Shopify can become more expensive and complicated as you add POS features, apps, payment processing, etc. If you're doing relatively simple transactions, you may be paying for capabilities you don't need.

2. Square — I'd seriously consider this if events are the bigger channel

Square is arguably the easier choice if your business is fundamentally "we sell stuff in person and also have an online store."

Square's catalog and inventory can sync between its POS and online store, and its retail system supports real-time inventory across locations and online. squareup.comsquareup.comwww.shopify.com

It's particularly attractive for live events because Square is very good at the physical transaction itself:

• Fast checkout
• Phone/tablet POS
• Card/contactless payments
• Barcode scanning
• Inventory tracking
• Offline payment capability
• Easy refunds/exchanges
• Customer capture
• Simple hardware

That offline payments capability is worth paying attention to for live events. Square says it can accept payments without Wi-Fi and store transactions until connectivity returns. squareup.comsquareup.comwww.shopify.com

Square for Retail

Square also has ecommerce, so you don't necessarily have to bolt another platform onto it. squareup.com

The downside: I'd choose Shopify if the online side is going to become a major growth engine. Shopify is the more ecommerce-centric ecosystem.

3. Lightspeed — powerful, but probably overkill initially

Lightspeed is worth looking at if you expect lots of SKUs, multiple locations, purchasing, inventory complexity, and a more traditional retail operation.

Its Retail POS and eCom can synchronize inventory and orders. x-series-support.lightspeedhq.com

But for a small merch operation, I'd want a specific reason to choose Lightspeed over Shopify/Square. You're potentially buying into a more sophisticated retail system when what you really need may be "scan shirt → take payment → decrement inventory → make the sale appear online."

Lightspeed Retail

The bigger question for your business

I'd actually choose based on how your events work.

If you're doing something like:

10–50 events/year → bring 100–500 pieces of merch → sell shirts/hats/etc. → go home → replenish → continue selling online

I'd lean Shopify.

If it's more:

Lots of small events → minimal ecommerce → we need a dead-simple card reader/POS → don't want to spend much time administering software

I'd lean Square.

And if you're doing:

Multiple teams/locations → hundreds/thousands of SKUs → serious inventory purchasing → warehouses → complex retail operations

I'd investigate Lightspeed.

One thing I'd prioritize above almost everything else

For your business, inventory synchronization is critical.

You don't want:

Online: 7 black XL shirts
Event POS: 7 black XL shirts
Actual physical inventory: 7 black XL shirts

…and then sell 5 at the event while the website still thinks there are 7.

Both Shopify and Square can keep inventory synchronized across online/in-person channels, which is why I'd start with those two. squareup.comsquareup.comwww.shopify.com

My default recommendation: Shopify + Shopify POS, unless keeping costs and operational simplicity extremely low is the priority—in which case Square deserves a very serious look.

If you tell me roughly (1) annual online sales, (2) number of live events, (3) number of SKUs/variants, (4) whether you need custom-order/take-home-later functionality, and (5) whether you already have a website, I can narrow this down to the best 2–3 setups and compare their likely costs.

For a small merch team selling at live events + online, I’d put Shopify at the top of the shortlist, with Square as the main alternative.

1. Shopify — my first choice

This is particularly well suited to your model because Shopify POS and the online store share the same product catalog, orders, customers, and inventory. Shopify specifically supports selling at pop-ups/events and syncing those sales with your online inventory. www.shopify.com

For custom merch, I'd especially value:

• Variants for size/color/design combinations and individual SKUs.
• Real-time inventory across your online store, event setup, and storage locations.
• Barcode scanning for fast event checkout and stock counts.
• Customer capture at events so an event buyer can become an online customer.
• Buy online / ship later if you run out of a size at an event.
• A large app ecosystem if you eventually need custom-order workflows, print-on-demand, email/SMS marketing, shipping, accounting, etc. www.shopify.com

The big advantage is that you can treat an event booth almost like another store location, rather than having "event sales" and "online sales" as two separate businesses.

2. Square — definitely worth comparing

I'd choose Square if your priority is "we need to show up at an event, plug in the hardware, and sell stuff without a lot of operational complexity."

Square's retail system handles inventory, payments and online selling, with inventory automatically adjusted when items sell. It also supports clothing/apparel particularly well. squareup.com

Square may make more sense if the majority of your revenue is currently at events and ecommerce is secondary.

The decision I'd make

If you're building a merch brand: → Shopify

If you're primarily an event seller that happens to have a web store: → Square

If you have complex wholesale, purchasing, multiple warehouses/locations, or sophisticated retail requirements: → investigate Lightspeed too.

For a small team, I would not start with a complicated POS/ERP stack. The killer feature you want is:

Sell 3 XL black hoodies at an event → inventory immediately becomes 17 → your website shows 17 → someone orders one online → event inventory/back-office inventory reflects the new 16.

That's the core workflow I'd test before choosing anything.

If you tell me roughly (1) number of SKUs, (2) how many events/month, (3) whether you do custom orders at the event, and (4) your approximate annual sales, I can narrow this down to the best 2–3 setups and the likely monthly cost for your team.

For a small merch business selling custom products both at live events and online, I’d put Shopify + Shopify POS at the top of the shortlist.

The key is that you want one product catalog, one inventory count, one customer/order database, and one reporting system rather than bolting a POS onto an ecommerce store.

My shortlist

1. Shopify — probably my pick for you

Shopify is particularly attractive because the ecommerce site and POS are native parts of the same system. Inventory, orders, customers and products can sync between your online store and temporary event/pop-up locations. Shopify explicitly supports mobile selling at pop-ups, markets and other events. www.shopify.com

For merch, I'd particularly value:

• Event POS: take payments from a phone/tablet at festivals, concerts, markets, etc.
• Real-time inventory: sell 10 shirts at an event and your online inventory drops accordingly.
• Variants: size/color combinations are handled as individual inventory items.
• Ship-to-customer: if you're out of a size at an event, you can potentially sell it and ship it later.
• Customer capture: collect email/customer information at checkout.
• Online + social selling: the same catalog can power your website and other sales channels.
• Scalability: you don't have to migrate platforms if the merch operation becomes substantially larger. www.shopify.com

For a merch company, I'd also test the actual event checkout workflow before committing: cellular connectivity, offline behavior, speed of scanning/selecting variants, receipts, tips, refunds, and how quickly a new employee can learn it.

2. Square — worth serious consideration

If your business is more event-heavy than ecommerce-heavy, I'd look closely at Square.

Square's online store and POS can share inventory, orders and customer data, and Square supports both its own ecommerce tools and connections to other ecommerce platforms. squareup.com

The appeal is simplicity and cost. Square is a particularly good choice if you want to say:

"We need to show up at an event with a couple of phones/tablets, take payments, and not have a complicated retail system."

The tradeoff is that Shopify is the stronger ecommerce/commerce platform overall, in my view. If your website is going to become a significant sales channel, I'd lean Shopify.

3. Lightspeed

I'd consider Lightspeed if you expect the business to become a more inventory-intensive retail operation—multiple locations, lots of SKUs, purchasing, sophisticated inventory controls, etc.

For a small team primarily doing custom merch + events + online, though, I suspect it could be more system than you need.

What I'd choose

I'd narrow it to:

Shopify if:

Online sales are important and you want the business to grow around ecommerce.

Square if:

Live events are the core business and the website is relatively simple.

Lightspeed if:

Inventory/retail operations are going to become unusually complex.

For your particular description, I'd start with Shopify. It gives you the cleanest "one business, one inventory, two channels" setup. Shopify's current POS supports event/pop-up selling and keeps POS and ecommerce inventory synchronized. www.shopify.com

One important question would change my recommendation quite a bit: are you selling your own branded merch directly to consumers, or are you producing custom merch for clients/events (e.g. a band, company, festival, or sports team)? The latter has some very different workflow requirements.

Yes. For a small merch team selling at live events + online, I’d narrow the field to Shopify, Square, and possibly Lightspeed—but I’d start by comparing Shopify vs. Square.

My quick take

1. Shopify — my first choice

I'd lean Shopify if your online business is important and you expect it to grow.

Shopify POS is designed specifically to keep online, pop-up/event, and other sales channels synchronized. Inventory, orders, customers, products, and payments live in one back office. It also supports mobile selling at events, product variants, barcode scanning, customer profiles, and multi-location inventory. www.shopify.comsquareup.com

For custom merch, that's particularly attractive because you might have:

• T-shirts → size × color
• Hoodies → size × color
• Hats, posters, stickers, etc.
• Limited-edition event merchandise
• Different inventory physically traveling to different events
• Online inventory that needs to remain accurate while you're selling at a show

Shopify can keep those inventory quantities synchronized across the online store and physical/event sales. www.shopify.com

Big advantage: If someone at an event wants something you don't have with you, you can potentially turn that interaction into an online sale rather than losing it.

2. Square — seriously consider this

I'd choose Square if your business is event-heavy and you want the simplest possible setup.

Square has a very good small-business proposition: POS, payments, online store, inventory, customer information, etc. can all operate together. Its online store syncs orders, inventory, and customer data with the physical POS. squareup.com

It's particularly compelling if your typical scenario is:

Load merch into the van → go to event → set up table → sell from phones/tablets → come home → inventory is automatically updated.

A recent 2026 small-business POS comparison also ranked Square as its overall pick, particularly emphasizing its free POS option, built-in payments, inexpensive hardware, and suitability for selling on the go. fitsmallbusiness.com

The tradeoff: I'd give Shopify the edge if your ecommerce operation, marketing, online merchandising, and long-term digital sales are going to become a major part of the business.

3. Lightspeed

I'd put Lightspeed on the shortlist if you anticipate becoming a more sophisticated retail operation—lots of SKUs, purchasing, inventory complexity, multiple locations, etc.

For a small team primarily doing custom merch + events + ecommerce, though, I think it may be more system than you need initially.

What I'd do in your shoes

I'd run a head-to-head test of:

Shopify POS vs. Square

And I'd test them using your actual event workflow rather than comparing feature lists.

For example, take 20–30 of your real products and test:

1. Create products with size/color variants.
2. Load inventory.
3. Make 20 simulated event sales.
4. Do a return.
5. Sell something online.
6. Check whether inventory updates correctly.
7. Give another team member access to POS.
8. Test selling with a phone/tablet and unreliable event Wi-Fi.
9. See how quickly you can find a customer's previous order.
10. Look at the end-of-event sales/inventory report.

The biggest thing I'd pay attention to is inventory. For merch businesses, the nightmare isn't really taking the payment—it's discovering that you sold the last 2 XL black hoodies at an event, but the website still thinks you have 2 available.

Shopify is particularly strong here: its POS supports real-time inventory across locations and sales channels, including temporary/event inventory, and can handle transfers and purchase orders as you grow. www.shopify.com

My recommendation

If online is 40%+ of your business or you want it to become that: Shopify.

If events are the core business and online is primarily a complementary storefront: Square.

If you're already dealing with substantial inventory/retail complexity: investigate Lightspeed too.

If you tell me roughly (1) how many SKUs you carry, (2) how many events/month, (3) current online sales volume, (4) whether you need Shopify/WooCommerce/etc. compatibility, and (5) how many people will operate the POS, I can narrow this down to the best 1–2 choices and compare the actual monthly cost + card fees + hardware for your setup.

For a small merch team selling at live events + online, I’d narrow the field to Shopify, Square, and Lightspeed—with Shopify probably the best fit if ecommerce is an important part of the business.

My shortlist

1. Shopify — my first choice

For your particular model, Shopify's big advantage is that the online store and POS are actually the same inventory/order system. Shopify specifically supports selling through POS at markets and pop-ups, with orders and inventory synced between events and your online store. help.shopify.comwww.shopify.com

That matters a lot for merch. For example:

You take 30 black L hoodies to Saturday's event → sell 18 → Shopify automatically knows you have 12 left online.

You can also have multiple event sellers using the system, customer profiles, discounts, barcode scanning, shipping, online fulfillment, etc.

Current U.S. pricing starts around $39/month for Basic, with basic in-person selling included; POS Pro is an additional $89/location/month if you need the more advanced retail functionality. help.shopify.comwww.shopify.com

I'd choose Shopify if:

• Your online store is important or expected to grow
• You have lots of SKUs/sizes/colors
• You want one inventory database
• You do frequent events/pop-ups
• You may eventually sell through Instagram, marketplaces, wholesale, etc.
• You want a large ecosystem of merch, fulfillment, email, accounting, and marketing integrations

2. Square — seriously worth considering

Square is the one I'd demo alongside Shopify.

It's particularly attractive if your business is event-heavy and you want something that your team can pick up quickly. Square's POS has a free tier, and its online store can also be started with no monthly fee. squareup.com

Square also syncs online orders, in-person sales and inventory, and supports mobile payments, barcode scanning, exchanges, shipping, pickup, etc. squareup.com

I'd choose Square if:

• Live events are the primary sales channel
• Your ecommerce operation is relatively straightforward
• Keeping monthly costs low matters
• You want the simplest possible POS
• You don't need Shopify's enormous ecommerce ecosystem

The tradeoff is that Shopify is generally the stronger ecommerce platform, particularly as the online side gets sophisticated. Even Square's own comparison material positions Shopify as stronger for unified omnichannel/ecommerce capabilities. help.shopify.comwww.shopify.com

3. Lightspeed

I'd put Lightspeed third for you.

It's excellent when the hard problem is complex retail inventory—lots of products, locations, purchase orders, vendors, detailed reporting, etc. help.shopify.comwww.shopify.com

But if you're a small team doing merch at concerts, festivals, conventions, sporting events, etc., I suspect you'll appreciate Shopify/Square's simplicity more.

What I'd actually do

I'd run a Shopify vs. Square trial using a real event scenario, rather than comparing feature checkboxes.

Test these six things:

1. Create a 100-SKU merch catalog with sizes/colors.
2. Take the POS to an event using only a phone/tablet + card reader.
3. Process a bunch of rapid-fire sales while the line is moving.
4. See what happens when internet connectivity is poor.
5. At the end of the event, reconcile cash/card sales and inventory.
6. Place an online order afterward and make sure the inventory reflects the event sales correctly.

For a merch operation, #3–5 are more important than how pretty the ecommerce website is.

My recommendation

Start with Shopify unless your business is predominantly live-event sales.

I'd go:

Shopify → best long-term platform
Square → best simple/lean alternative
Lightspeed → only if your inventory/retail operations are unusually complex

One other thing I'd investigate is how you manufacture/fulfill the custom merch. If you're using a printer/fulfillment company for some products, that can change the recommendation considerably because Shopify has a very broad ecosystem of integrations.

If you tell me roughly (a) number of SKUs, (b) number of people selling at events, (c) number of events/month, (d) whether you make the merch yourselves or outsource it, and (e) approximate annual sales, I can narrow this down to a specific platform + POS hardware setup and estimated monthly cost.

For a small team selling custom merch both at live events and online, I’d put Shopify + Shopify POS at the top of the shortlist.

The key is that you want one product catalog, inventory, customer database, orders, and reporting system rather than a POS that merely connects to your ecommerce site.

My shortlist

1. Shopify POS — my first choice

Shopify is particularly well suited to your model because its POS and ecommerce operation share the same back office. Inventory can be synchronized across your online store, events/pop-ups, warehouses and other locations. Shopify also specifically supports mobile selling at pop-ups and events. www.shopify.com

For example, you could have:

• 100 black hoodies in inventory
• Sell 20 at a concert → inventory immediately becomes 80
• Sell 5 online → becomes 75
• Move 30 to your next event → transfer inventory
• Customer at the event wants a different size → look it up/order it
• Customer wants something you don't have at the event → sell it through the online catalog and ship it
• Customer later buys online → their customer/order history remains connected

That last couple of capabilities are particularly useful for merch: Shopify supports things like buy in person/ship to customer, buy online/return in person, pickup, and selling from wherever you have inventory. www.shopify.com

The other big advantage is the ecosystem. If your "custom merch" involves personalization, print-on-demand, embroidery, custom artwork, subscriptions, email marketing, etc., Shopify's app ecosystem gives you considerably more room to build around the core store.

2. Square Retail — definitely worth comparing

I'd look seriously at Square if your operation is event-heavy and relatively straightforward.

Square has a strong retail POS, inventory management, customer profiles, and online selling, with sales and inventory synchronized across channels. squareup.com

It's attractive if your priority is:

"We need to show up at an event with a couple of phones/readers, sell stuff, and have the inventory automatically update."

Square also now offers several ecommerce paths, including its own online store and integrations with platforms such as Shopify and WooCommerce. squareup.com

So there's a potentially interesting architecture of Square POS + Shopify ecommerce, although I'd generally prefer Shopify POS + Shopify ecommerce if ecommerce is going to be a major part of the business—you avoid introducing another synchronization layer.

3. Lightspeed

I'd put Lightspeed on the list if you're anticipating a larger inventory operation: lots of SKUs, multiple locations, purchasing, vendors, more complex retail processes, etc.

But for a small team doing merch at events, I'd want to see a compelling reason to accept the additional complexity rather than starting with Shopify.

What I'd choose for your particular business

I'd probably rank them:

1. Shopify + Shopify POS
2. Square + Square Online
3. Shopify + POS + custom-merch/personalization apps
4. Lightspeed

The important caveat is how you actually produce the custom merch.

If you're doing something like:

Customer chooses a shirt → chooses color/size → uploads artwork/name → you produce it → ship it

that's a different platform requirement from:

You manufacture 50 designs in advance → take boxes of them to concerts/festivals → sell them online and at events.

If you tell me (1) roughly how many SKUs/products you have, (2) whether the customization happens before or after the customer orders, (3) what you use to manufacture/fulfill the merch, and (4) roughly how many live events you do per month, I can narrow this down to the 2–3 systems I'd actually demo, including approximate costs and the event-day workflow.

For a small team selling custom merch at live events + online, I’d focus less on a traditional POS and more on a unified commerce platform that keeps inventory, customers, orders, and reporting together. Your biggest pain points will likely be:

• preventing overselling when the same hoodie sells at a show and online
• fast checkout with a small crew
• handling pop-ups/festivals/tours
• capturing customer emails/SMS at events
• managing variants (sizes, colors, designs)
• easy reorders and fulfillment

My shortlist:

www.shopify.com

My likely recommendation by scenario

1. You’re building a brand (artists, creators, bands, lifestyle merch):
→ Shopify + Shopify POS

This is usually the strongest long-term choice. You can run your website, event sales, email marketing, customer data, and inventory from one ecosystem. Shopify POS is designed to connect in-person sales with online inventory and customer data. www.shopify.com

Typical setup:

• Shopify online store
• Shopify POS Go or iPad POS for events
• barcode labels on merch
• Shopify Payments
• email/SMS capture at checkout
• shipping integration

2. You mainly sell at shows, markets, festivals, and occasional online:
→ Square

Square is excellent when the priority is “arrive, plug in, sell.” It has affordable hardware, mobile checkout, and an integrated online store option. squareup.com

Typical setup:

• Square Reader or Terminal
• Square Online store
• inventory by SKU
• simple customer database
• QR code signage for online orders

3. You have hundreds/thousands of SKUs or multiple sales teams:
→ Lightspeed

Worth considering if you’re managing:

• many designs
• multiple warehouses
• tour inventory
• wholesale accounts
• detailed purchasing/reordering

www.lightspeedhq.com

For a small merch operation, I’d probably avoid:

• WooCommerce + separate POS plugins unless you already have technical resources
• separate ecommerce and POS systems (Shopify website + unrelated POS) because inventory reconciliation becomes painful
• enterprise retail systems that require too much setup

A practical starter stack

For most small custom merch teams:

Shopify Basic + Shopify POS + barcode scanner + label printer + iPad
or
Square POS + Square Online if events are 80%+ of your sales.

A few questions would change the recommendation:

1. Are you selling your own branded merch (artist/creator/company) or making custom merch for clients?
2. Roughly how many SKUs do you carry (10, 100, 1,000+)?
3. Are live events occasional pop-ups, or are you touring every week?
4. Do you need print-on-demand integration, or do you hold inventory?

For a small team selling custom merch both at live events and online, I’d narrow the field to Shopify, Square, and Lightspeed—with Shopify as my default recommendation.

My ranking

1. Shopify + Shopify POS — my first choice

For your model, Shopify has a particularly nice advantage: the event POS and online store are the same commerce system. Inventory, orders, customers and products can be managed from one back office, and Shopify explicitly supports mobile selling at pop-ups and events. www.shopify.comwww.shopify.com

That's valuable for merch because you might start an event with:

• 30 black L shirts
• 20 black M
• 15 hats
• 10 hoodies

…and sell 12 shirts at the event while someone simultaneously orders 3 online. The inventory should simply decrement rather than having you reconcile two systems later. Shopify says inventory is synced across POS, online and other sales channels in real time. www.shopify.com

It also handles product variants well—size, color, etc.—which is important for apparel. www.shopify.com

Current pricing: Shopify's Basic plan starts at $39/month monthly ($29/month billed annually), with in-person event selling included. The more advanced POS Pro functionality is an additional $89/month per location, but I'd probably start without POS Pro for a small event team. www.shopify.comwww.shopify.com

Shopify POS

2. Square — best if events are the center of the business

I'd look seriously at Square if you're saying:

"We're primarily an event/pop-up merch operation and our website is secondary."

Square is very good at the physical transaction side, and its ecommerce tools keep online sales, in-person sales, inventory and customer information together. squareup.com

The tradeoff is that I think Shopify gives you a stronger long-term ecommerce/merchandising platform if the online side becomes a significant part of the business.

Square

3. Lightspeed — worth considering if inventory gets complicated

Lightspeed becomes interesting if you expect a fairly large SKU catalog, multiple event locations, sophisticated purchasing, margins, pricing rules, etc.

It has strong inventory functionality and supports temporary pop-up locations, including transferring inventory into and out of those locations. retail-support.lightspeedhq.com

But for a small custom-merch operation, I'd be concerned about paying for capabilities you don't need yet. Current Retail pricing starts around $89/month and goes up from there. www.lightspeedhq.com

Lightspeed Retail

What I'd actually do in your shoes

Start with Shopify Basic + Shopify POS hardware.

Then structure the business around:

Shopify
→ master product catalog
→ online store
→ inventory
→ customer database
→ orders

Shopify POS
→ events
→ pop-ups
→ mobile checkout
→ card/tap payments
→ event-specific inventory

That gives you one source of truth rather than an online system + separate event POS + spreadsheets.

One particularly useful feature for merch is that Shopify supports things like buy in person/ship to customer, QR codes that let someone browse or buy online, and online/in-store order history. www.shopify.com

One important caveat

If by "custom merch" you mean you're taking custom orders at events—e.g. "put this name/logo on a hoodie, choose garment + color + size, we'll produce and ship it later"—I'd evaluate the platforms somewhat differently.

In that case, the important question isn't just POS + ecommerce. It's POS + product customization + quoting/order capture + production workflow.

If that's your model, tell me roughly what you're selling, how many SKUs/variants you have, and what happens when someone orders custom merch at an event, and I can give you a much more specific 2–3 platform recommendation.