How I built a 100% offline-first Capacitor app for UK Property Surveyors

ProSurvey Apps — Sat, 25 Apr 2026 23:50:42 +0000

Building a hybrid app in 2026 is easy. Building a hybrid app that works 100% offline in a concrete basement is incredibly difficult.

I recently launched DampApp Pro and PropertySurvey Pro, which are compliance apps for the UK property surveying industry (specifically dealing with Awaab's Law and commercial dilapidations).

The problem with legacy enterprise software (like Pocket Survey or iAuditor) is that they rely on cloud synchronization. If a surveyor is 3 levels deep in a Victorian basement inspecting damp, they lose 5G. If the app tries to sync a high-res photo, it crashes, and they lose an hour of work.

The Architecture Solution: I utilized Capacitor to wrap my web app into native iOS and Android binaries. But more importantly, the entire PDF generation engine runs natively on the device's hardware.

Surveyors can take high-res photos, and the app generates a multi-page, highly-formatted PDF report directly on the device in seconds. No loading bars. No cloud.

To top it off, I integrated Gemini AI dictation engine that allows them to speak their field notes, and the AI rewrites it into objective, legally defensible prose.

You can check out the parent site here: ProSurvey Apps.

If anyone else is building offline-first architectures in Capacitor, I'd love to swap notes on managing large local data stores and native device capabilities!

Forem: ProSurvey Apps

How I built a 100% offline-first Capacitor app for UK Property Surveyors