PWA Mobile App
Install on your phone. Works offline. Built for on-site use.
Incognito F&S Professional is a Progressive Web App (PWA) — which means you can install it on your phone or tablet directly from the browser, with no app store required. It behaves like a native app, with a home screen icon and full-screen experience.
The app is optimised for on-site use with a mobile-first layout designed around 44px touch targets and readable text in any lighting. The fault database, calculators, and logbook all work offline once the app has been loaded.
Install on iPhone via Safari → Share → Add to Home Screen. Install on Android via Chrome → Menu → Add to Home Screen.
Engineering use cases
Real examples from the work fire alarm engineers do every day.
On-site fault lookup
Standing at a panel with no laptop. Open the app, search the fault code, get the diagnostic path — all without a stable internet connection if you've loaded the app previously.
Calculator on-site
Quick battery sizing check while on site. Open the toolkit, enter the figures, get the result. No browser tab hunting required.
Logbook entry on-site
Complete the weekly test log immediately after the test — timestamped, signed, and saved — without going back to the office.
Key benefits
- ✓Install from the browser — no app store required
- ✓Works offline for fault database, calculators, and logbook
- ✓Mobile-first layout designed for on-site use
- ✓Runs on iOS (Safari) and Android (Chrome)
Start using PWA Mobile App today
Free trial — no card required. Upgrade any time.