Offline-First Mobile App
Flutter application that stays usable with no connection and reconciles on reconnect.
- Role
- Mobile and API
- Timeline
- 2024 — 2025
- Domains
- Mobile · Backend
- Capabilities
- System design · Data flow · API design
- Stack
- Flutter · Dart · SQLite · NestJS
Measured
100%
Offline feature parity
Problem
Field staff worked in places with no reliable signal, and the existing app was unusable the moment it lost the network.
Approach
Local SQLite is the source of truth. Writes queue as intents and replay on reconnect, with last-write-wins per field and an explicit conflict view for the cases that rule cannot settle.
Outcome
The application works identically offline, and sync conflicts became visible and resolvable instead of silent.