One DuoApp.
Every device you work on.
Open DuoApp in any browser with nothing to install, or get the dedicated app for your phone, tablet, Mac and PC. It's the same DuoApp, the same login and your data always in sync - and the mobile app keeps working when the signal doesn't.
Start in seconds, on any computer.
The full DuoApp platform runs in Chrome, Edge, Safari and Firefox - on Windows, Mac, Chromebook or Linux. Nothing to download, nothing for IT to roll out: log in and you're running projects, invoicing, approvals and files straight away. Perfect for the office and anyone who'd rather not install a thing.
Prefer a native app?
Same account, built for each device - and ready for the field.iOS app
The true mobile app for iPhone and iPad. Snagging, QC sign-offs, photos, timesheets and approvals from your pocket - and it works offline on site.
Android app
A dedicated Android app for phones and tablets is on the way - the same offline-first site experience as iOS, for the rest of your crew.
Mac app
A dedicated macOS app from the Mac App Store - a focused desktop window for DuoApp that lives in your Dock, separate from your browser tabs.
Windows app
A downloadable Windows desktop app is in the works - DuoApp as a proper app on your PC, no browser tab required. Watch this space.
The site doesn't always have a bar of signal. DuoApp doesn't care.
Basements, plant rooms, lift shafts, rural plots - the mobile app keeps working with no connection at all. Record quality checks, raise snags, take photos, log issues and fill timesheets offline, and the moment you're back on Wi-Fi or 4G it all syncs automatically. Nothing lost, nothing to re-enter.
Capture now, sync later
QC sign-offs, snags, photos and timesheets are saved on the device and uploaded automatically when a connection returns.
No work lost in a black spot
Crews on remote or below-ground sites keep moving. The app never blocks because the signal dropped halfway through.
The full app, not a viewer
Offline means properly usable offline - you're doing the work, not just reading a cached, read-only copy of it.
Switch device, pick up exactly where you left off.
Always in sync
Raise it on your phone on site, finish it on the desktop back at the office - same data, instantly.
One secure login
The same email and password across browser and every app. Role-based permissions follow you wherever you sign in.
UK-built & hosted
Every app talks to the same UK-hosted platform - one source of truth for the whole team.
Wherever the work is, DuoApp is there.
Open it in your browser right now, or grab the app for your device. Same account, your data in sync, and it keeps working off-grid.