Year2023
RoleMobile Engineer
Duration5 months
ClientConsumer App
StackReact Native, Expo, SQLite, TypeScript
03

The challenge

Users in low-connectivity regions experienced constant data loss. The original app required online connections for every interaction.

The approach

Architected a local-first data layer with SQLite, queue-based sync, and conflict-free background updates. Profiled and rebuilt the slowest screens with native list virtualization.

The outcome

  • 100% offline availability for core features
  • 60% improvement in time-to-interactive
  • App Store rating jumped from 3.6 → 4.7

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