Three-point summary
- AirREGI and Square POS both provide a free standard POS application.
- AirREGI fits a Japanese store that wants to build around AirPAY, reservations, accounting connections, and restaurant ordering.
- Both standard POS applications are free, but a production store still needs devices, printing, cash handling, payments, and connectivity.
Decision summary
AirREGI fits a Japanese store that wants to build around AirPAY, reservations, accounting connections, and restaurant ordering.
- Initial setup time
- Touches required to complete checkout
- Inventory, customer, and sales reporting
- AirREGI fits a Japanese store that wants to build around AirPAY, reservations, accounting connections, and restaurant ordering.
- Square POS fits a business that wants Square payments, hardware, online selling, and invoices under one platform.
- Both standard POS applications are free, but a production store still needs devices, printing, cash handling, payments, and connectivity.
- Recheck current pricing and billing terms on the official site
- Confirm cancellation, migration, and data-retention conditions
- Verify that required features are included in the selected plan
- Initial setup time
- Touches required to complete checkout
- Inventory, customer, and sales reporting
- Buyers choosing only the lowest headline price
- Teams that will not check migration, cancellation, or data-retention terms
- Readers unable to recheck changes after the verification date
Research policy: For AirREGI vs Square POS: Which Free POS Fits Your Store?, we prioritized the provider-owned sources listed below. Recheck prices, features, and terms on the official site before purchase.
Pricing: We use the provider’s official currency and do not publish independent exchange-rate conversions.
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Verdict: choose the surrounding service ecosystem
AirREGI fits a Japanese store that wants to build around AirPAY, reservations, accounting connections, and restaurant ordering.
Square POS fits a business that wants Square payments, hardware, online selling, and invoices under one platform.
Free scope and startup cost
Both standard POS applications are free, but a production store still needs devices, printing, cash handling, payments, and connectivity.
AirREGI can use existing compatible iPads, while Square offers published Reader, Stand, and Terminal options.
| Criterion | AirREGI | Square POS |
|---|---|---|
| Standard POS fee | JPY 0 | JPY 0 |
| Primary devices | iPad or iPhone | Phones, tablets, and Square hardware |
| Payments | Separate AirPAY application | Square payments in the same account |
| Store functions | Catalog, inventory, customers, sales, accounting links | Catalog, inventory, customers, sales, online, invoices |
| Restaurant expansion | AirREGI Order and Restaurant Board | Square for Restaurants and kitchen tools |
| Cost model | Free POS plus peripherals and services | Free POS plus hardware and industry plans |
Register functions
AirREGI documents order entry, checkout, inventory, customers, sales analysis, CSV exports, accounting connections, and offline checkout.
Square provides catalog, inventory, customers, reports, staff access, and refunds and connects those functions to online and invoice workflows.
Payment integration
AirREGI transfers amounts to AirPAY to reduce duplicate entry, but the payment contract and underwriting remain separate.
Square POS and Square payments operate under the same provider and account, simplifying hardware and payment reporting.
Advanced restaurant and retail functions
AirREGI Order, Square for Restaurants, retail plans, and other advanced modules can create additional software or hardware cost.
Do not compare only the free applications when handhelds, kitchen displays, mobile ordering, multi-store administration, or detailed inventory are required.
Run the same scenario
Configure one week of products, staff, discounts, refunds, closing, inventory, and payments in both systems and reproduce the same trading scenario.
A practical pilot should use the same products, discounts, tax rules, staff roles, refund cases, and end-of-day reports in both systems. Record setup time, checkout time, correction steps, hardware needs, and export quality. This converts a feature comparison into an operating-cost comparison and exposes training or exception-handling differences before a full migration. Rehearse the selected workflow with every role before launch.
- Initial setup time
- Touches required to complete checkout
- Inventory, customer, and sales reporting
- Payment and accounting connections
- Export and migration after cancellation
Frequently asked questions
Should I simply choose the lowest processing rate?
No. Compare the effective cost including eligibility, payment mix, hardware, subscriptions, settlement, and integration.
Should POS and payments come from one provider?
One provider can simplify amount transfer and support, but also compare functionality, rates, and portability.
Which sales data is needed for a comparison?
Prepare at least three months of value and transaction count by card brand, e-money, QR, cash, and in-person or online channel.
Research scope and verification
- Official sources
- 6 sources
- Last verified
- July 20, 2026
- Topic guide
- POS and Payment Integration
We prioritize provider-owned pricing, product, and help pages and limit claims to what those sources support.
Official sources
Next action
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