Offline-First Billing Software That Works Without Internet
QuickBooks, Xero, Wave, and Zoho Books all break the moment your internet drops. BusinessOS was built the opposite way: every feature runs on your device using local storage.
Try it now →Why offline-first matters
- Works on a plane, in a basement, in a country with unreliable internet
- No dependency on our servers — if we go down, you keep working
- Faster: no round-trip to a cloud database for every action
- Private: nothing leaves your device unless you explicitly sync it
- Reliable: no "connection lost, please refresh" errors
How it works technically
BusinessOS is a Progressive Web App (PWA) that installs on iOS, Android, Windows, macOS, and Linux. Data is stored locally using IndexedDB. Every calculation — VAT, cash flow, P&L, balance sheet — happens on your device.
Who benefits from offline billing
- Field workers, tradespeople, technicians who bill on-site
- Businesses in emerging markets with unstable internet
- Consultants and freelancers who travel frequently
- Privacy-conscious professionals (lawyers, doctors, therapists)