Oleg
Oleg
 
Shorin
Shorin

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Fitness Tracker App

A cross-platform mobile app for tracking fitness activities, setting goals, and monitoring progress with motivational tools.

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Fitness Tracker App

A cross-platform mobile application designed to help users improve their lifestyle by tracking their fitness activities and monitoring progress over time. The app focuses on simplicity, real-time engagement, and personalized motivation. The project helped me strengthen my skills in mobile UI/UX, data synchronization, and full-stack mobile architecture.


🚀 Features

  • Activity Tracking — Log workouts such as walking, running, cycling, and gym sessions.
  • Goal Setting — Create personalized fitness goals with deadlines and reminders.
  • Progress Monitoring — Visual charts and graphs for daily, weekly, and monthly performance.
  • Motivational Tools — Streak tracking, achievement badges, and daily fitness tips.
  • Personalized Dashboard — Tailored experience based on user behavior and preferences.

🛠 Tech Stack

Frontend

  • React Native for cross-platform development (iOS + Android)
  • Navigation built with React Navigation
  • Real-time updates via WebSockets
  • Styling using CSS-in-JS (Styled Components)

Backend

  • Node.js + Express API for user profiles, workouts, and goal tracking
  • Secure sessions with JWT
  • Scheduled tasks with Node-cron for reminders and notifications

Database

  • MongoDB for storing:
    • user profiles
    • daily activity logs
    • fitness goals
    • achievements
  • Optimized queries for fast synchronization
  • AWS S3 used for storing user avatars or media content

Deployment

  • Backend deployed on Render with Docker containers
  • Mobile app published to:
    • Google Play Store
    • Apple App Store
  • Automated CI/CD pipelines for continuous delivery

🔧 Implementation Details

Frontend Architecture

  • Modular React Native components for seamless UI across devices
  • Smooth animations and responsive layouts for fitness dashboards
  • WebSocket-driven updates for activity changes and notifications

Backend Workflows

  • RESTful API endpoints for workouts, progress, and goal management
  • Background workers for reminders and push notifications
  • Hashing and encryption for secure authentication

Data Layer

  • Flexible MongoDB schemas for activity logs and achievements
  • Aggregation pipelines for generating visual performance charts

🧭 How It Works

  1. Onboarding — Register or log in via email or social accounts
  2. Track Activities — Log workouts manually or sync with wearables
  3. Set Goals — Define milestones and fitness objectives
  4. Monitor Progress — View insights through visual charts
  5. Stay Motivated — Unlock streaks, badges, and daily fitness tips

⚠️ Challenges Faced

  • Achieving seamless UX across iOS and Android devices
  • Handling real-time synchronization between sessions
  • Designing an intuitive interface that motivates users to stay active

🔮 Future Enhancements

  • Integration with Fitbit, Garmin, and Apple Watch
  • AI-driven personalized fitness recommendations
  • Social features for challenges, groups, and team competitions