Offline Construction Audit App With Photo Capture & GPS
No signal on site? No problem. ProPlot's native Android shell supports full offline audits — photo capture, GPS tagging, PDF generation, and auto-sync when you're back in range. Your workflow never stops.
Built for Sites With No Signal
Native Android Shell
Not a web wrapper — a native shell that triggers the device camera directly. No browser file pickers, no page refreshes. Just tap and capture.
Offline Photo + GPS
Photos stored locally with GPS coordinates cached on device. IndexedDB for PWA, Capacitor Filesystem for native. Everything auto-syncs on reconnect.
Offline PDF Reports
Generate complete audit reports offline. The PDF engine resolves local photo references so your reports include all evidence, annotations, and location data.
Side-by-Side Comparison
Web-reliant tools break on construction sites. ProPlot doesn't.
| Feature | Site Audit Pro | ProPlot |
|---|---|---|
| Offline audit creation | Web-dependent | Full offline with auto-sync |
| Native camera access | Browser file picker | Direct device camera — no page refresh |
| Offline GPS capture | No | Coordinates cached locally |
| Offline PDF generation | No | Generate reports without signal |
| Photo storage | Cloud-only | Local IndexedDB + Capacitor Filesystem |
| Auto-sync on reconnect | Manual refresh | Automatic background sync |
| Construction programme | None | 91-stage engine — works offline too |
| Contractor sharing | Online only | Queue shares offline, send on reconnect |
| Split-day scheduling | No | AM/PM concurrent task booking |
| Price | £50–£150+/mo | Free in beta |
Offline-First Features
Frequently Asked Questions
Do I need to prepare for offline use?
Open your project once while connected to initialise the cache. After that, ProPlot works fully offline. If you try to access a project that hasn't been cached, you'll see a clear message prompting you to connect first.
What if I take photos offline and my phone dies?
Photos are written to device storage immediately after capture. They persist through app restarts and device reboots. The sync queue picks up where it left off when you reopen ProPlot with connectivity.
Can I share audit items while offline?
Network-dependent actions like sharing and Push to Hub are disabled offline to prevent data integrity issues. Once you reconnect and sync, all sharing features become available immediately.
Your Workflow Doesn't Need Wi-Fi
Offline audits, GPS photos, PDF reports — sync when you're ready.
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