FitTrack – Free Weight Tracker, BMI Calculator & Workout Logger
Track Your Weight Loss Journey with AI Predictions
FitTrack is a free, privacy-first fitness tracking Progressive Web App. Log your daily weight, monitor BMI, calculate body fat percentage, record workouts, and receive AI-powered weight loss predictions — all without creating an account. Your data stays on your device.
Features
- Daily weight logging with trend charts (7-day, 30-day, all-time)
- BMI calculator with visual arc meter and category classification
- Body fat percentage calculator using the US Navy method
- Workout tracker: Strength, Cardio, Yoga, Cycling, Swimming, HIIT
- AI weight prediction powered by linear regression
- Goal progress tracker with milestone alerts
- Streak tracker and monthly heatmap calendar
- Export data as CSV for Apple Health and Google Fit
- Install as PWA — works fully offline
- Dark and light theme support
BMI Calculator
Calculate your Body Mass Index instantly. Enter your current weight and height to see your BMI value, category (Underweight, Normal, Overweight, Obese), and a visual meter showing where you stand.
Body Fat Percentage Calculator
Use the US Navy circumference method to estimate your body fat percentage. Enter waist, neck, and (for women) hip measurements to get an instant result with category classification.
AI Weight Prediction
FitTrack uses linear regression on your logged entries to predict your weight 1 week, 2 weeks, 3 weeks, and 1 month into the future. Log at least 3 entries to activate predictions.
Workout Tracker
Log strength training, cardio runs, yoga sessions, cycling, swimming, and HIIT workouts. Track duration, calories burned, and personal notes for each session.