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Cross-Platform Mobile App

React Native app for iOS and Android with offline-first architecture, push notifications, and real-time sync. Published on both App Store and Google Play with 4.8★ average rating.

8 weeksTimeline
5Technologies
4Key Outcomes
LiveStatus

The Challenge

What needed to be solved.

A service-based business needed a mobile app that worked reliably in areas with poor connectivity. Users needed to complete workflows offline — capturing data, photos, and signatures — and sync everything when back online, without data loss or conflicts.

The Approach

How I built the solution.

Built with React Native and Expo for cross-platform deployment from a single codebase. Implemented an offline-first architecture using WatermelonDB for local storage with a custom sync engine that handles conflict resolution. Firebase for push notifications, real-time presence, and authentication. Node.js backend with webhook-based sync to ensure data integrity.

Technology Stack

Tools chosen with intent.

React Native
Expo
Firebase
TypeScript
Node.js

Results

Measurable outcomes delivered.

4.8★ average rating across App Store and Google Play
2,000+ monthly active users
100% data integrity with offline-to-online sync
60% reduction in field data collection time

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