Billing that survives internet failures, power-cut restarts and everything in between. Offline-first is the foundation of Posnic, not a feature.
The local edition needs no connection, ever. Install it and bill, even in a basement shop with no signal.
Data lives on the shop computer, under your control, with automatic daily local backups.
Clean database shutdown and automatic repair mean a power cut does not become a data loss.
Extra counters and tablets bill over the shop Wi-Fi with no internet involved at all.
Posnic Cloud adds two-way sync that queues offline sales and catches up the moment the connection returns.
The app makes zero external calls and the source is public, so the offline claim can actually be checked.
The complete Posnic application is open source under AGPL-3.0 on GitHub. No trial timers, no locked features, no telemetry. Pay only if you choose Posnic Cloud for sync, backups and remote dashboards.
Nothing is lost. Sales are stored locally, and if you use Posnic Cloud, they queue and sync automatically when the connection returns.
No account, no activation, no internet. Download, install and start billing.
Yes. Phones and tablets connect to the main machine over the shop Wi-Fi network, which does not need internet access.
Posnic for other businesses: Restaurant POS · Supermarket POS · Textile Shop POS · Hardware Store POS · Electronics Store POS