Body Composition Tracker

Roman Nazarevych

About this app

See more than the number on the scale.

Body Composition Tracker combines weight and tape measurements to estimate body fat, fat mass, lean mass, BMI, and waist-to-height ratio over time. A basic weight log stops at kilograms or pounds; this app recalculates body composition from your raw measurements and clearly identifies the estimate method used.

THE MAIN DIFFERENCE

Log abdomen, waist, neck, and hip measurements alongside weight. Formula guidance shows which inputs support each estimate, while the app automatically selects the best available calculation and dynamically updates your body-composition timeline from the raw observations you recorded.

TRACK WHAT MATTERS

• Log weight plus abdomen, waist, neck, and hip measurements
• View 1-day, 7-day, and 30-day changes plus goal progress
• Follow daily, weekly, or monthly trends with optional smoothing
• Compare aligned yearly trends and focus on the visible time window
• See body-fat, fat-mass, lean-mass, BMI, and waist-to-height estimates
• See the estimate method used, with automatic fallback when inputs are missing
• Keep manual, Health Connect, and file-imported readings clearly identified

PRIVATE AND PORTABLE

Your data is stored locally on your device. There is no account, advertising, analytics, or developer-operated server. Optional Health Connect access imports weight only after you grant permission. Repeated records are de-duplicated. You can export a JSON backup, restore it with a safe merge, or import compatible scale CSV/TSV files through Android's document picker.

Body Composition Tracker is not a medical device. It does not diagnose, treat, cure, or prevent any medical condition. Body-composition values are estimates for personal wellness tracking only and are not medical advice. Consult a qualified healthcare professional for health decisions.

What’s new

Sync now shows progress and stays disabled until the Health Connect import finishes, and a failed sync says what went wrong.

Body-fat estimates wait until sex and height are set. Home tiles now say which profile field or measurement is still missing, and tapping a tile opens the right screen.

Comparing years in Trends shows the date of a point, for example Mar 14, instead of a day number.