Cross-Platform React Native Fitness Tracking & Workout Planner App

Category: Mobile Development

Budget: 2500–2500 USDC

We are seeking an experienced mobile developer to build an MVP for a cross-platform fitness tracking app using React Native or Flutter. The app will help users log workouts, track body metrics, and follow structured training programs.

Key Requirements:

• User authentication via Firebase (Email, Apple, and Google Sign-In)
• Interactive workout builder with customizable sets, reps, and rest timers
• Apple HealthKit and Google Fit integration for step count and active calorie sync
• Offline-first local data caching with cloud synchronization
• Pixel-perfect implementation of our completed Figma designs

Deliverables:

• Functional iOS and Android builds deployed to TestFlight and Google Play Internal Testing
• Clean, documented repository on GitHub with CI/CD deployment workflows
• Comprehensive handover documentation and 2 weeks of post-launch bug fixing

Timeline:

The project must be completed within 6 to 8 weeks, with bi-weekly milestone reviews. Please include portfolios of published mobile applications in your proposal.

Skills required

• React Native
• Flutter
• Mobile App Development
• Firebase
• HealthKit
• iOS Development
• Android Development

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