Evaluation tool
A POS demo is easy to fake. A benchmark is harder. Use this checklist to test Posnic or any other open-source POS with the daily work that exposes reliability, data ownership and hidden cost.
| Test | Pass condition | What to record |
|---|---|---|
| Install and first sale | A normal cashier can install or open the app, add products and complete a sale without developer help. | Time to first receipt, confusing setup steps and anything that requires support. |
| Offline sale | Turn off internet and complete sale, return, receipt print, inventory update and day close. | What fails, what queues locally and what needs the internet. |
| Receipt and hardware | Barcode scanner, receipt printer, cash drawer and weighing workflow behave as expected. | Printer drivers, receipt layout, drawer trigger and barcode speed. |
| Inventory accuracy | Purchase receiving, sale, return and stock correction produce explainable stock movement history. | Before/after stock, audit trail and mismatch handling. |
| Restaurant workflow | Table order, KOT, cancellation, split bill and takeaway order are usable during rush conditions. | Kitchen routing, correction steps and cashier friction. |
| Permissions | Cashiers cannot edit prices, delete bills or see owner reports without permission. | Roles, approvals, voids, refunds and audit trail. |
| Backup and restore | A new machine can restore the shop with products, customers, sales and settings intact. | Backup location, restore time and missing data. |
| Exit path | Products, customers, stock and sales can be exported in readable formats. | Export format, completeness and whether exports need paid access. |
For a small shop, Posnic should score highest when offline local billing, clean inventory and a free start are the main priorities. A different product may win if the buyer mainly needs ERP breadth, PHP hosting control or a restaurant-only stack.
Save screenshots of setup, sales, returns, stock movement, reports and export screens. They are better than memory after testing five products.
Do not benchmark with a laptop alone. POS failures usually appear around printers, scanners, drawers, scales, permissions and shift closing.
Before deployment, ask how backup restore, corrupted database, lost password, device replacement and branch sync failures are handled.
A serious test can be done in one working day if the buyer prepares products, taxes, users, hardware, receipts, reports and offline scenarios before starting.
The internet outage test is the most important for shops. Billing, receipt printing, stock movement and day close should continue when connectivity is unavailable.
Use a copy or sample of real data. Include actual product names, barcode formats, tax rules, payment modes and receipt layouts so the result reflects daily work.