If you're comparing Square and Shopify as the point of sale for a physical store, the short answer is: neither one started out built for a multi-location retailer with real inventory. Square grew out of card payments and added retail features on top. Shopify grew out of ecommerce and added an in-person point of sale so online stores could also ring up walk-in sales. Picking between them on price alone misses the questions that actually matter once you're past a single counter: how deep is the inventory system, does the online catalog share stock with the register, does accounting still mean manual reconciliation, and what happens to the bill once you add a second store or an online channel.
What's the real difference between Square and Shopify for a physical store?
Square is a payments company first; its point-of-sale software sits on top of card processing, which is why it's often the fastest way for a new business to start taking cards at a counter. Shopify is an ecommerce platform first; its point-of-sale app extends an online store to a physical location, which is why stores that started online often add it to sell in person too. Neither starting point automatically makes a system deep enough to run purchasing, transfers, and accounting across more than one location — and that's exactly what you should test before you commit, not after you've moved your catalog twice.
A fair Square vs Shopify comparison for a physical store means testing where each product started — payments or ecommerce — against four practical questions: how deep is the inventory system, does the online catalog share stock with the register, does accounting still require manual reconciliation, and what happens to the bill once you add a second location or an online channel.
What should you actually compare, beyond the monthly price?
A sticker price rarely tells you the whole story. Before you sign up for either platform — or anything else — walk through this list with a real answer for each line, not a sales pitch:
- Inventory depth — per-location stock, purchase orders, receiving, transfers between sites, reorder points, and a movement history you can audit, not just a stock count.
- Catalog unification — does the online store sell from the same inventory as the register, or is it a separate product you have to keep in sync by hand or with a third-party app?
- Accounting reconciliation — does daily sales data land in your books automatically, or does someone re-key it or match it line by line at month end?
- Per-location and per-app cost — what does the bill look like at one store versus three, and how many separate apps do you need to reach the feature set you actually want?
- Payment flexibility — is card processing tied to one processor, or can you choose your own?
- Multi-location reporting — can you compare stores side by side, or does each location live in its own silo?
How deep does the inventory system need to be?
For a store with more than a handful of SKUs, "tracks inventory" isn't enough — you need to know what's on hand at each location, what's on order, what's in transit between stores, and why a count came up short. Look for a per-item, per-location ledger where every sale, transfer, receipt, and adjustment leaves an audit row, plus purchase orders you can receive against and reorder points that flag low stock before it's gone. If reorder math is new to you, the standard formula is lead-time demand plus safety stock — see our reorder point and par level guide for the calculation and real examples. This is the area where thin POS add-ons tend to show their limits fastest, because inventory depth was never the core product. Our retail inventory visibility page walks through what a real ledger looks like in practice.
Does the online store share inventory with the register, or is it a separate system?
This is the question that causes the most pain six months in. If your online store and your in-store register don't read from the same stock count, you either oversell online, or you manually block quantities as a workaround — and both cost you sales or staff time. Ask directly: when a walk-in customer buys the last unit of an item, does the online listing update immediately, or does it need a sync job to catch up? Our guide on keeping online and in-store inventory in sync covers what breaks when these are two systems instead of one, and how to test for it before you commit.
Where does accounting fit in?
Selling and bookkeeping are two different jobs, and most point-of-sale products only do the first one. The question worth asking any vendor is specific: does the system send a daily sales journal to your accounting software automatically, or does someone need to export a report and enter it by hand? Manual reconciliation is where small errors compound into a mess at tax time. We wrote a full breakdown of what
vendors mean when they say "built-in accounting" — some genuinely post a daily sync, others just mean a report you still have to key in. See POS systems with built-in accounting, explained before you take that phrase at face value. Whatever system you choose, QuickBooks Online is the standard your bookkeeper will likely want to see data land in.
What do contracts and per-location pricing actually look like?
Point-of-sale and ecommerce platforms are usually priced per location, sometimes with separate fees for the online store, additional staff logins, or apps that fill feature gaps — inventory forecasting, loyalty, or accounting connectors, for example. The math that matters isn't the advertised starting price; it's what your bill looks like once you add a second store, turn on an online store, and give your team the seats they need. Ask any vendor to write out the total for your actual location count and user count, in writing, before you sign anything.
How does Retailer OS compare against this same checklist?
Retailer OS runs point of sale, inventory, and the team as one system, with the online store and marketplace channels as paid add-ons on that same catalog — instead of separate products stitched together. Here's how the pricing actually breaks down, exactly as billed:
- Store: $99.99/month per location. Point of sale and full inventory — purchase orders, receiving, transfers, reorder points, stock counts — come with every store.
- User seat: $9.99/month per person. The owner is a paid seat too, so the smallest possible bill is $109.98/month for one store and one user.
- Online store: $99.99/month, optional, once per account. It sells from the same catalog and inventory as the register — no separate stock count to sync.
- Amazon and eBay: $99.99/month each, optional. These are the only marketplace channels; they're paid add-ons on the same inventory, so stock never double-counts across channels.
- AI plans (optional): AI Lite $19.99/month, AI Plus $49.99/month, or AI Max $99.99/month — needed for AI merchandising help, product enrichment, demand forecasting, and reorder suggestions.
- Messaging plans (optional): from $49.99/month, needed for texting and email campaigns.
- No platform fee and no cut of sales. Card payments run on your own Stripe account, in-store and online, and reconcile on one surface.
On accounting, Retailer OS posts a daily sales journal per channel and received purchase orders as bills to QuickBooks Online, with a nightly check against the source — there's no general ledger inside the product itself, so you're not replacing your accountant, just removing the manual entry. On multi-location, every store shares one live stock count, and an owner can compare revenue, orders, average ticket, and margin across the store accounts they belong to. See the full breakdown on the pricing page and the platform overview, or check which other tools it connects to on the integrations page. If you already run Square or Shopify and outgrew what came with it, our notes on where Square runs into limits for growing stores and what a modern POS should actually do for an independent retailer are good next reads. If you're also deciding on counter hardware, our guide to setting up an iPad as your store's POS covers what to check before you buy.
Don't compare Square and Shopify on price alone. Walk both through the same six-point checklist — inventory depth, catalog unification, accounting, contracts, payments, and multi-location reporting — then see how Retailer OS stacks up on the same list, store by store.
Last updated September 25, 2026