Fieldnote
Offline-first progressive web app for structural property assessments and field contractors.
Why this needed to be built.
Fieldnote was built for property inspectors and civil engineers who conduct structural surveys in remote basements, attics, and construction sites where cellular connection is nonexistent. It allows inspectors to record observations, capture tagged photos, and compile official survey reports directly on site.
Approach and execution.
Designed and engineered an offline-first Progressive Web App using IndexedDB as the primary local data store. All records, voice dictations, and high-res photos are saved instantaneously to the device and synced seamlessly in the background when connectivity resumes.
Deliverables
- ✓Offline-capable PWA with local SQLite / IndexedDB cache
- ✓One-tap photo annotation with geo-coordinates
- ✓Background conflict-free synchronization engine
- ✓Instant branded PDF inspection report generator
Key functional details.
True Offline Operation
Zero network reliance during surveys. Full CRUD operations stored in local browser storage.
Background Sync Engine
Queues uploads with automatic retry and conflict resolution when connection is detected.
One-Click Report Export
Generates client-ready PDF inspection reports with photo grids and timestamps before leaving the site.
What this project proved
Offline-first apps require a fundamental shift in mental model: the server is just a backup, while the local client is the source of truth. Implementing optimistic UI updates ensured immediate tactile response.