The best POS system software depends on what happens at your checkout. A clothing shop needs accurate stock by size and colour. A restaurant needs modifiers, kitchen tickets, and split bills. A salon needs appointments and a smooth way to collect payment after each service.
Square is a practical starting point for small businesses in supported countries. Shopify POS suits retailers connecting online and in-store sales. Lightspeed Retail deserves consideration for inventory-heavy shops, while Toast focuses on restaurant operations. Loyverse offers a low-cost starting point, and Odoo suits businesses looking to connect checkout with wider business systems.
This comparison uses official product information rather than firsthand testing. Prices were checked in November 2026; regional offers, billing terms, and payment fees can change.
What Does POS System Software Do?
Point-of-sale software records purchases, calculates totals, applies discounts and taxes, and records how customers pay. Depending on the system, it also updates inventory, stores customer details, manages employees, and produces sales reports.
Three components work together:
- Software: The checkout interface and business management tools.
- Hardware: Tablets, terminals, scanners, printers, and cash drawers.
- Payment processing: The service that authorizes card payments and transfers funds.
These components may come from one provider or several. That distinction matters when comparing costs, troubleshooting problems, or switching providers.
A system that records a payment as “card” does not necessarily process that payment. With a separate terminal, employees may need to enter the amount twice and reconcile the records afterward.
Best POS Software Compared
The prices below are software reference points, not complete operating costs. USD figures are primarily US offers; Loyverse’s international pricing is identified separately.
| POS software | Strongest fit | Published software pricing | Main consideration |
|---|---|---|---|
| Square | Small shops, cafés, and service businesses | US Free: $0; Plus: $49/location/month; Premium: $149/location/month | Payment processing is limited to supported countries |
| Shopify POS | Retailers selling online and in person | US Basic: $39/month paid monthly; POS Pro adds $89/location/month on the advertised annual billing basis | Budget for the underlying Shopify plan and any Pro locations |
| Lightspeed Retail | Retailers with demanding inventory workflows | US X-Series Basic displayed from $89/month | Billing term, payments arrangement, registers, and locations affect the quote |
| Toast | Restaurants, cafés, and foodservice businesses | US restaurant Starter Kit from $0/month; Point of Sale from $69/month | Processing, hardware, and add-ons change the total |
| Loyverse | Small retailers and cafés prioritizing low software costs | Core POS free; international employee management and advanced inventory add-ons each $25/store/month | More advanced controls require paid add-ons |
| Odoo POS | Businesses connecting POS with broader operations | One App Free: $0 with unlimited users on Odoo Online | Additional independent apps, implementation, and customization can add costs |
These figures come from the providers’ official pricing pages. Confirm the billing commitment and included features before treating any advertised rate as your final price.
Six POS Systems Worth Shortlisting
1. Square: A Practical Starting Point for Small Businesses
Square combines checkout with tools for inventory, customer relationships, appointments, and other everyday business tasks. Its free software tier makes it worth evaluating when you want to start taking payments without immediately committing to a monthly software subscription.
A small salon, for example, should test booking, checkout, product sales, and repeat-customer records together. Buying a capable payment terminal will not solve scheduling problems by itself.
The tradeoff: Square’s paid subscriptions apply per location, and some capabilities have additional charges. Compare the exact package needed for your workflow.
Square supports card processing in the US, Canada, Australia, Japan, the UK, Ireland, France, and Spain. Payments use the account country’s currency; accepting an overseas customer’s card does not mean you can freely switch checkout currencies. Square Support Center – United States
2. Shopify POS: Best Suited to Connected Online and Store Sales
Shopify POS is a logical shortlist choice when your store already runs on Shopify or when online and physical sales need to share one operational system.
Consider a boutique selling the same clothing collection through its website and shop. The important test is whether stock, customer records, pickups, and returns remain consistent across both channels.
Basic in-person selling features come with paid Shopify plans. POS Pro adds capabilities such as staff permissions, more advanced inventory workflows, retail reporting, and cross-location returns and exchanges.
The tradeoff: Each Pro location adds another subscription charge. Also, integrated Shopify card readers require supported countries and payment arrangements. External terminals can be used, but payments are processed outside Shopify, which changes the checkout and reconciliation workflow. help.shopify.com
3. Lightspeed Retail: Worth Evaluating for Inventory-Heavy Shops
Lightspeed Retail’s X-Series pricing page lists inventory management, purchase orders, supplier-related tools, e-commerce, and reporting capabilities. These are useful areas to investigate when purchasing and stock control take more effort than accepting payments. Lightspeed Commerce
For a shop carrying thousands of variations, run a demonstration using your actual products. Receive a partial supplier delivery, correct a stock count, transfer an item, and return a damaged product.
That exercise reveals more than a polished checkout demonstration.
The tradeoff: Lightspeed has different product families. This comparison concerns Retail X-Series; restaurant software and other retail editions should be evaluated separately. Ask for an itemized quote covering locations, registers, payment arrangements, and required features.
4. Toast: A Restaurant-Focused Option
Toast’s restaurant offering includes order and table management, payment processing, reporting, and options for kitchen displays, online ordering, and other restaurant functions. Its US Starter Kit targets single-location businesses needing one or two terminals. pos.toasttab.com
For a café, test milk substitutions, extra shots, takeaway orders, and kitchen routing. For a full-service restaurant, test seat changes, split bills, and order amendments after a ticket reaches the kitchen.
The tradeoff: Toast’s $0 software option does not mean free operation. Its pay-as-you-go approach carries higher processing charges than certain paid arrangements, and the platform uses supported Toast hardware. Request comparable quotes using your actual card volume.
Toast operates in the US, Canada, Ireland, the UK, and Australia, with product availability varying by market. Developer guide
5. Loyverse: A Low-Cost Option for Straightforward Operations
Loyverse includes a free POS, essential inventory tools, loyalty, kitchen display functionality, and multi-store management. Employee permissions and advanced inventory are paid additions.
One easily missed detail is reporting history: the international pricing page includes the latest 31 days of sales analytics free, with unlimited sales history listed at $7 per store monthly. Regional pricing differs.
The tradeoff: Add together every feature you need before comparing it with a bundled subscription.
Loyverse can record sales offline, but integrated card terminals do not work offline. Refunds and some other functions are also unavailable, and open tickets do not synchronize between devices until connectivity returns.
6. Odoo POS: For Businesses Connecting Checkout With Wider Operations
Odoo deserves consideration when POS is part of a broader operational project involving stock, purchasing, accounting, or other business applications.
If your requirements extend beyond checkout into purchasing, stock control, and finance, our guide explains how to choose the right ERP system and evaluate the wider implementation costs.
Its POS supports shops and restaurants, with features covering products, customers, loyalty, and payment methods.
Odoo’s One App Free plan includes one app and its required dependencies on Odoo Online, with unlimited users. Installing additional independent applications can move the business onto a paid plan.
The tradeoff: A low license price does not remove configuration work. Evaluate who will maintain product data, integrations, permissions, and local requirements. Odoo is more appealing when someone owns that ongoing work.
Compare Features Using Your Real Business Workflow
A feature checklist helps, but a completed transaction tells you more.
| Business type | Workflow to test | What it reveals |
|---|---|---|
| Retail | Exchange an online purchase for a different size in store | Inventory accuracy, refund handling, and channel integration |
| Restaurant | Split a bill after changing an order already sent to the kitchen | Order synchronization and staff usability |
| Service business | Take a deposit, reschedule, then collect the balance | Appointment and payment coordination |
| Multiple locations | Transfer stock and accept a return at another branch | Location permissions and centralized records |
Also test employee access. A cashier may need to issue a receipt without being able to export customer data or change prices.
For loyalty, check what happens when a purchase is refunded. For reporting, ask whether the system separates gross sales, discounts, refunds, taxes, tips, and processing fees. A sales total alone is not enough to explain the bank deposit.
How Much Does a POS System Really Cost?
Compare costs over a full year using the same assumptions for every provider.
Your estimate should include:
- Software charges by location, register, or user.
- Hardware purchases, rentals, and replacement costs.
- Payment processing percentages and fixed transaction fees.
- Loyalty, scheduling, inventory, or e-commerce add-ons.
- Setup, migration, training, and support.
- Contract exit costs and integration subscriptions.
Why Transaction Size Matters
Consider a hypothetical processor charging 2.6% plus $0.15 per transaction.
On $30,000 in monthly card sales across 1,500 transactions:
- Percentage fees: $780
- Fixed transaction fees: $225
- Total processing: $1,005
A $0 software subscription would not remove those costs.
The fixed charge also affects a café selling small orders differently from a furniture shop processing fewer, larger purchases. Request quotes using both your monthly card revenue and transaction count.
A hypothetical 0.3-percentage-point rate reduction saves $90 on $30,000 of volume. If obtaining that rate costs another $100 monthly, the processing savings alone would not justify the upgrade.
Worldwide Buyers: Check These Details Before Choosing
Country, Currency, and Payment Compatibility
Separate four questions:
- Can your business register for the software?
- Can it obtain merchant payment processing?
- Does the provider support your settlement currency and bank?
- Can you purchase supported hardware locally?
Shopify, for example, distinguishes integrated supported readers from external terminals. Square limits merchant card processing to its supported markets. Software access and payment availability are different checks. help.shopify.com
Ask specifically about local debit networks, mobile wallets, QR payments, refunds, and payout timing.
Local Taxes and Receipts
Have the vendor demonstrate a receipt using your business’s actual requirements. Verify tax-inclusive or tax-exclusive pricing, registration numbers, receipt numbering, rounding, and any required fiscal or electronic invoicing integration.
Configurable tax fields alone do not establish that a system satisfies every local requirement. Have your accountant review the proposed setup before launch.
Offline Functionality
“Works offline” can mean recording a cash sale, saving an order, or accepting a card payment for later submission. These are different capabilities.
Square warns that merchants remain responsible for expired, declined, or disputed offline payments.
During the demonstration, disconnect the internet. Test checkout, printing, kitchen communication, and reconnection. Ask what happens if the device loses power before transactions synchronize.
How to Switch POS Systems Without Disrupting Sales
Start with a small pilot before moving every register.
Clean your product catalog, remove duplicate items, check tax categories, and verify opening stock. Then test imports using a limited sample.
Pay particular attention to gift cards, loyalty balances, deposits, and historical returns. Being able to import customer names does not prove those balances will transfer correctly.
Before launch:
- Complete a sale, refund, discount, and end-of-day close.
- Reconcile the test results with payment records.
- Train staff using realistic exceptions.
- Keep accessible exports from the previous system.
- Confirm who provides support during your trading hours.
FAQs
What is the best POS system software for a small business?
Start with business fit and country support. Square suits many straightforward operations, Shopify suits connected retail, and restaurant operators should evaluate Toast. Inventory complexity may justify Lightspeed, while Loyverse and Odoo offer different low-cost entry points.
Is free POS software really free?
The core subscription can be free. Hardware, payment processing, paid features, and implementation may still cost money. Compare the complete setup you need.
Can I keep my existing card processor?
Sometimes. Ask whether the processor integrates directly, requires a separate terminal, or affects your software price. Also confirm how refunds and reconciliation work.
Can POS software replace accounting software?
Do not assume it can. Checkout reports support bookkeeping, but financial accounts also require expenses, liabilities, reconciliation, and other records. Test the accounting integration or export workflow.
Which POS works without internet?
Several offer limited offline functions, but capabilities differ. Confirm card authorization, refunds, device synchronization, and transaction recovery for the exact hardware you will use.
Final Words
Choose two or three systems that support your country and business model. Ask each provider to demonstrate the same real transactions and quote the same annual usage.
The strongest choice is the one your staff can operate reliably, your business can reconcile accurately, and your budget can sustain as you grow.