ChatGPT answers, unedited

For three retail stores + a straightforward ecommerce site + inventory tracked separately by store, I’d shortlist these:

My pick: Shopify

For your use case, Shopify is probably the sweet spot. You can create three locations—Store A, B, and C—and maintain quantities independently. For example:

• Store A: 12 units
• Store B: 4 units
• Store C: 0 units
• Online: availability based on whichever locations you choose to make available

Shopify also supports using the physical stores as fulfillment locations, order routing, and POS, so you're not bolting a separate inventory system onto the ecommerce platform. help.shopify.com

If “simple” is the #1 priority, I'd compare Shopify vs. Square. If you tell me (1) what POS you use today, (2) approximate number of SKUs, and (3) whether customers need buy-online/pickup-in-store, I can tell you which one I'd choose and what plan/setup you'd need.

For three retail stores with simple multi-location inventory, I’d focus on platforms that combine ecommerce + POS + location-level stock tracking rather than a heavy enterprise inventory system.

Best fits:

My recommendation for your situation

For only three stores and “simple” inventory, I would shortlist:

1. Shopify + Shopify POS — likely the best overall fit
   • One product catalog
   • Three inventory locations
   • Online orders can pull from store stock
   • Staff can check inventory across stores
   • Easier employee training and support ecosystem

help.shopify.com

2. Square Online + Square Retail — if your stores already run on Square terminals
   • Lowest operational friction
   • Good if ecommerce is an extension of your physical stores

3. BigCommerce — if ecommerce growth is the main priority
   • Better suited if you expect a larger online catalog, multiple storefronts, or more complex selling channels. www.bigcommerce.comwww.bigcommerce.com

A few questions would change the recommendation:

• Are your stores already using a POS system (Square, Clover, Lightspeed, etc.)?
• Do you need buy online/pick up in store (BOPIS)?
• Roughly how many SKUs do you carry (100, 1,000, 10,000+)?
• Do all three stores share the same products, or does each store have its own inventory?

For three retail stores with simple multi-location inventory, I’d shortlist these:

My recommendation for a three-store retailer:

1. Pick Shopify if your main goal is growing online sales:
   • Website/storefront is the priority
   • Stores mainly need inventory visibility
   • You want lots of integrations and marketing tools

Shopify’s multi-location inventory is likely enough for a simple three-store setup. help.shopify.com

2. Pick Square for Retail if your stores are the center of the business:
   • You sell mostly in person
   • You want easy checkout + online store together
   • Your catalog is not extremely complex

squareup.com

3. Pick Lightspeed if you need more retail operations:
   • Frequent stock transfers between stores
   • More detailed inventory reporting
   • Larger SKU counts or plans to expand

www.lightspeedhq.comwww.lightspeedhq.com

For a typical 3-location retailer, I’d start by evaluating Shopify + Shopify POS versus Square for Retail. Lightspeed is the upgrade path if inventory complexity grows.

A few questions would narrow it down:

• Do you already have a POS system in the stores (Square, Clover, Lightspeed, Shopify POS, etc.)?
• Roughly how many SKUs do you carry (100, 1,000, 10,000+)?
• Do you need customers to see “available at Store A/B/C” and reserve for pickup?

For three retail stores + a straightforward ecommerce site + inventory tracked separately by store, I’d shortlist Shopify first.

Best fit: Shopify

Shopify supports multiple physical locations natively. You can:

• Track inventory separately at each of the 3 stores.
• See inventory by location in the admin.
• Sell in-store through Shopify POS while keeping inventory synchronized.
• Route online orders to locations based on inventory and your fulfillment rules.
• Transfer stock between stores. help.shopify.com

That makes it a good fit if your requirement is basically “one ecommerce catalog, three stores, one inventory system.”

The main alternative: Square

Square is worth considering if your physical retail/POS operation is more important than the ecommerce experience. Square supports multiple locations, location-level inventory, transfers between stores, and cross-location fulfillment. squareup.com

My quick recommendation:

One important distinction: if by “simple multi-location inventory” you mean each store has its own quantity and online orders should know which store has stock, Shopify handles that natively—you likely don't need a specialized inventory-management system. help.shopify.com

If you tell me roughly how many SKUs you have, whether the three stores already use a POS, and whether customers need “buy online, pick up at Store A/B/C,” I can narrow this down to the best 2–3 options and the likely monthly cost.

For three retail stores with simple multi-location inventory, I’d narrow it to three good fits:

My recommendation by scenario:

• You mainly want an online store and your three stores just need stock counts: choose Shopify. It is usually the cleanest ecommerce foundation. help.shopify.com
• You want the simplest “sell online + ring sales in stores + keep inventory synced” setup: choose Square. squareup.com
• Your stores are the core business (apparel, gifts, specialty retail, lots of SKUs, transfers between stores): choose Lightspeed. www.lightspeedhq.com

For a typical three-store retailer, I’d start by evaluating Shopify vs Square and only move to Lightspeed if you need more advanced retail controls.

A few questions would change the answer:

1. Are your stores already using a POS system (and which one)?
2. Roughly how many SKUs do you have (100, 1,000, 10,000+)?
3. Do you need customers to see “available at Store A / Store B” online or just internal inventory tracking?

For 3 retail stores + a straightforward ecommerce site + shared inventory, I’d shortlist these:

My pick: Shopify

If ecommerce is important and the stores are essentially three inventory locations, I'd choose Shopify.

You can set up:

• Store A → its own inventory
• Store B → its own inventory
• Store C → its own inventory
• Online store → shared visibility into those locations
• Transfers between stores
• Real-time inventory adjustments when something sells in-store or online
• BOPIS / ship-from-store later if you need it

Shopify specifically supports assigning inventory to individual retail locations and managing it centrally; it can handle up to 1,000 stores, so three is well within its intended model. www.shopify.comwww.lightspeedhq.comwww.shopify.comsquareup.com

Square would be my alternative if your ecommerce needs are relatively basic and you want the simplest retail/POS experience. Square can also filter and manage stock by location and supports cross-location fulfillment. squareup.com

If you tell me roughly how many SKUs you have, whether you already use a POS, and whether online orders should be fulfilled from any of the 3 stores, I can tell you which one I'd pick and what plan/setup you'd actually need.

For three retail stores + a simple ecommerce site + location-level inventory, I’d shortlist Shopify and Square, with Shopify as my default recommendation.

My pick: Shopify

Shopify supports inventory separately by location, so you can have:

• Store A: 24 units
• Store B: 11 units
• Store C: 7 units
• Online orders automatically routed according to your fulfillment rules
• Inventory updated from both online and in-store sales
• Transfers between locations
• Shopify POS for the physical stores

Shopify explicitly supports retail stores as inventory locations and lets you track quantities independently at each one. help.shopify.com It also supports inventory transfers between locations. help.shopify.com

When I'd choose Square instead

Square is particularly attractive if your three stores are the center of the business and ecommerce is secondary.

Square lets you view stock by location, adjust inventory, and transfer stock between locations. squareup.com It also supports fulfilling an order from another location when the original store is out of stock. api.squareup.com

Quick decision

For your specific description, I'd start with Shopify. Three locations is well within its intended multi-location inventory model, and you don't need a complicated inventory-management system just to accomplish this. Shopify currently advertises multi-location inventory across up to 1,000 warehouses, fulfillment centers, and stores. www.shopify.com

If you tell me what you sell, whether the three stores already use a POS, and roughly how many SKUs you have, I can narrow this down to the best Shopify vs Square vs Lightspeed setup and the likely monthly cost.

For 3 retail stores + an ecommerce site + simple per-store inventory, I’d pick Shopify.

Best fit: Shopify + Shopify POS

Shopify supports separate inventory quantities for each location, so you can see, for example:

• Store A: 12 units
• Store B: 4 units
• Store C: 0 units
• Online/warehouse: 20 units

Inventory updates as products are sold, returned, or transferred, and Shopify POS can be assigned to each physical location. help.shopify.comwww.lightspeedhq.com

Shopify

How I'd rank the alternatives

Lightspeed is particularly strong for multi-location retail, with real-time cross-location inventory and stock transfers, but it is more retail-management-oriented than you may need. www.lightspeedhq.com

My recommendation: If you don't need complex purchasing, warehouse management, or advanced retail workflows, go with Shopify. Three stores is well within the kind of multi-location setup Shopify is designed for. help.shopify.com

If you tell me what you sell and whether you already have a website/POS, I can narrow it down between Shopify, Square, and Lightspeed—including likely monthly cost.

For 3 retail stores + a simple ecommerce site + inventory tracked separately by store, I’d shortlist these:

My pick: Shopify

Shopify is probably the best fit if ecommerce is the priority.

• Set up each of your 3 stores as a separate inventory location.
• Track stock independently at each location.
• In-store sales through Shopify POS can automatically reduce that store's inventory.
• Online orders can be routed based on inventory/location rules.
• You can transfer inventory between locations. help.shopify.com
• Shopify currently supports multi-location inventory across up to 1,000 warehouses, fulfillment centers, and stores. www.shopify.com

Consider Square if your stores are the priority

Square is especially attractive if you already want Square POS/payment hardware in the stores. Its retail inventory tools let you filter stock by location, adjust stock, and transfer inventory between stores. squareup.com

Quick decision

For your description, I'd start with Shopify. You don't need a complicated multi-warehouse/ERP system just because you have three stores; Shopify's native location model covers the basic use case cleanly. help.shopify.com

If you tell me what you sell, approximate number of SKUs, and whether you already use a POS system, I can narrow it down between Shopify, Square, and a couple of alternatives.

For three retail stores + a simple ecommerce site + inventory tracked separately by store, I’d lean toward Shopify.

Best fit: Shopify

Why it fits:

• Multi-location inventory is built in — you can create each store as a location and track quantities independently. help.shopify.com
• Online and in-store sales stay synchronized, including Shopify POS sales at each physical store. www.shopify.com
• You can see inventory by location and transfer stock between locations. www.shopify.com
• Online orders can be routed to locations based on inventory availability and fulfillment rules. help.shopify.com
• It isn't overly complicated for only three stores; you can start relatively simple and add more sophisticated fulfillment later.

Also worth considering: Square

Square for Retail is a strong alternative if your physical stores/POS are more important than the ecommerce side. It supports real-time inventory synchronization across locations and online, plus transfers and cross-location fulfillment. squareup.com

My recommendation

For your stated requirement, I'd choose Shopify. Its native location model is almost exactly what you described: Store A, Store B, Store C, each with its own stock quantity, all feeding one ecommerce operation. help.shopify.com

If you tell me what you sell, approximate number of SKUs, and whether you already use a POS system, I can narrow this down to the best specific Shopify/Square setup and likely plan.

For three retail stores with simple multi-location inventory, I’d shortlist these:

My likely recommendation for your situation:

• If your priority is selling online + keeping inventory synced across 3 stores → choose Shopify. It’s the cleanest ecommerce platform with multi-location inventory built in. help.shopify.com
• If your priority is running the stores first and adding a basic online shop → choose Square. squareup.com
• If you have lots of SKUs, frequent transfers between stores, purchasing workflows, or complex inventory rules → choose Lightspeed. www.lightspeedhq.com

For a three-store retailer with “simple” inventory, I would usually start with Shopify + Shopify POS or Square for Retail, rather than jumping to a heavier retail ERP.

A few details would change the recommendation:

1. Do your three stores already use a POS system (Square, Clover, Lightspeed, etc.)?
2. Roughly how many products/SKUs do you carry?
3. Do you need customers to see “available at Store A/B/C” online, or just a combined inventory count?

For three retail stores with simple multi-location inventory, I’d shortlist these:

My recommendation for your situation:

• Pick Shopify if your priority is “launch a good online store and keep the three stores’ inventory visible.” It is likely the easiest path for a small multi-location setup. help.shopify.com
• Pick Square if your stores are simple (small catalog, straightforward sales, minimal purchasing/transfer needs). squareup.com
• Pick Lightspeed if each store has meaningful inventory movement and you care about store-to-store transfers, reporting, and retail controls. www.lightspeedhq.com

For three locations, I’d usually avoid overbuilding with an enterprise inventory system. A good starting architecture is:

Ecommerce site + POS + shared inventory

• Store 1 inventory
• Store 2 inventory
• Store 3 inventory
• Online inventory pool (with rules for where orders fulfill from)

A few questions would narrow this down:

1. Do your three stores already use a POS system (Square, Clover, Lightspeed, etc.)?
2. Roughly how many SKUs do you carry (50, 500, 5,000+)?
3. Do you need customers to see “available at Store A” and “buy online, pickup in store”?

For three retail stores + an online shop + straightforward per-store inventory, I’d shortlist these:

My pick: Shopify

If ecommerce is important, I'd go with Shopify + Shopify POS. You can set up Store 1, Store 2 and Store 3 as separate inventory locations, and sales at each location automatically update that location's stock. Shopify also supports transfers between locations and online fulfillment rules. help.shopify.comhelp.shopify.com

If you're primarily brick-and-mortar and just need a basic web store, I'd lean Square instead.

Rule of thumb:

• 🛒 Online-first / omnichannel → Shopify
• 🏪 Retail/POS-first → Square
• 📦 More sophisticated retail operations → Lightspeed

If you tell me roughly how many SKUs you have, whether you already have a website, and whether each store needs its own POS, I can narrow it down to one.

For three retail stores + a simple online store + inventory tracked separately by store, I’d shortlist Shopify and Square, with Shopify as my default choice.

My recommendation: Shopify

Shopify supports separate inventory quantities for each physical location, so you could have Store 1 / Store 2 / Store 3 and see the stock for each independently. Online orders can be routed to locations based on inventory and fulfillment rules. help.shopify.com

It also gives you Shopify POS for the three stores, meaning your in-store sales can decrement the same inventory that your ecommerce site uses. help.shopify.com

Shopify

When I'd choose Square instead

Square is particularly attractive if your physical stores/POS are more important than the ecommerce side. Square can filter inventory by location, track stock per location, transfer inventory between stores, and even fulfill an order from another location when one store is out of stock. squareup.com

Square

Bottom line: If you're primarily looking for an ecommerce platform that happens to have three stores, I'd go Shopify. If you're primarily a three-location brick-and-mortar retailer that wants a web store, I'd seriously consider Square.

If you tell me roughly how many SKUs you have and whether the three stores already use a POS, I can narrow it down to the best specific plan/setup.