Cross-Platform Fitness Tracker with Real-time Biometrics

Category: Mobile Development

Budget: 3000–3000 USDC

We are seeking an experienced mobile developer to build a high-performance fitness tracking application for both iOS and Android using Flutter or React Native. The app must integrate with HealthKit and Google Fit to pull real-time heart rate and step data. Key features include a custom workout builder, progress visualization dashboards using D3.js or similar libraries, and a social feed for sharing achievements. Deliverables include the full source code, UI/UX design assets, and deployment to both the App Store and Google Play Store. We require a clean, modular architecture and Firebase integration for authentication and real-time database management. The project is expected to be completed within 8 weeks, with bi-weekly milestone check-ins to review progress and implement feedback.

Skills required

• Flutter
• Firebase
• HealthKit
• Mobile UI Design
• API Integration

Milestones are funded into USDC escrow on Polygon before work begins.