POSimulatorDeveloper-first POS simulation
Build and test POS integrations with live-like sales data - without real merchants or POS accounts.
Simulate Shopify, Square, Lightspeed, Toast, and SumUp APIs with real orders, webhooks, and polling - ready in minutes.
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Businesses enabled
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Of fake money spent today
Sample businesses
Realistic storefronts with live hours, categories, and locales.
WTF?!
The problem
- POS sandboxes are incomplete
- You need a real merchant to test properly
- Webhooks are hard to debug
- Demos look fake
The solution
- POSimulator generates continuous, realistic sales
- APIs look exactly like real POS systems
- Webhooks and polling behave like production
- No merchant required
How it works
1. Sign in
Google OAuth, no setup.
2. Enable businesses
Retail, hospitality, fuel, food trucks.
3. Build against POS APIs
Orders, payments, refunds, webhooks.
When you are ready, swap credentials and go live.
What you get
- Live-like orders and payments
- Realistic VAT and tax data
- Webhooks + delta polling
- Deterministic, replayable data
- One API token, multiple POS facades
- Swap to live POS without a rewrite
Pricing
Free - forever
Static API snapshots served from CDN. No login required.
- Example payloads
- Sample orders, items, webhooks
- Static JSON files
- No auth and no rate limits
Great for inspecting schemas and building mocks. Upgrade when you need live data, OAuth, and webhooks.
Browse sample data£4.99 / month
All POS facades, live sales, webhooks, and polling.
- Unlimited simulated businesses
- Live sales generation
- Webhooks and polling
- API browser
- Replay and test tools
Developers
Docs and developer portal
Example-first documentation. No marketing language.
- Quick start
- Authentication
- Supported POS APIs
- Webhooks
- Free vs Paid comparison
- API browser
API browser
Swagger UI with preloaded examples and business selectors.
- Works without a paid account (read-only)
- POS facade selector
- Business selector
Use cases
Accounting and VAT tools
Verify tax calculations with realistic VAT line items.
BI and analytics
Test dashboards with consistent, replayable order streams.
Reconciliation engines
Stress test refunds, voids, and late payments safely.
FAQ
Is this a real POS?
No. It is a simulator designed for integration testing.
Can I use this in production?
No. POSimulator is for development and testing only.
Will my integration work with real POS?
Yes. The APIs mirror real POS behavior and payloads.
Why not just use sandboxes?
They are incomplete, and webhooks rarely behave like production.
Built by developers who have integrated POS systems before.
Transparent limitations, realistic data, and a clean upgrade path.
Made in Scotland with Love by Unlike Another AI