Body measurements
More than the scale.
Weight is one signal. Your waist, arms, and legs tell a different part of the story. 4.2 tracks 15 body measurement types and 22 metrics in total, with waist as the hero — and shows direction over time, not a prediction.
Waist
One measurement with the most context.
Waist is more than a number for a pair of jeans. It is a practical, repeatable signal that can change even when the scale does not.
- WHO midpoint guidance, built into the entry flow.
- The measurement site is recorded, so future readings are comparable.
- A waist chart with raw points and a descriptive direction line.
- Waist-to-height ratio reference for adults with height and date of birth.
A reference, not a verdict.
The adult NICE reference compares waist circumference with height. It is one signal among many and does not measure body composition or diagnose a condition.
The full set
Fifteen measurements, grouped for real bodies.
Torso, arms, and legs — with left and right tracked separately where it matters.
Torso
Waist, neck, chest, bust, belly, hip.
Arms
Bicep, left and right wrist, left and right forearm.
Legs
Left and right thigh, left and right calf.
Left and right are tracked separately so a single-side change is not averaged away.
Direction
A line that describes, not predicts.
The direction line is a simple description of the raw points you entered. It does not forecast your next measurement or claim a cause.
- Raw points and a direction line in one chart.
- No prediction line for body measurements.
- Use last for repeat entries; unusual jumps ask for confirmation.
- Edit, delete, and add notes to keep the record honest.
Hide the numbers. Keep the record.
Display privacy masks measurement values across the app. Your data is still there, still exportable, and still yours.
Quick entry
Small details that make a long record usable.
A measurement you avoid logging is worse than one you log imperfectly. The entry flow is short, forgiving, and explicit about what changed.
Use last
Prefill the last value when you are repeating a measurement, then adjust only what changed.
Anomaly confirmation
A large jump asks for confirmation. It is a check, not a block, and it does not rewrite the record.
Date & notes
Record when you measured and anything that affected the reading — time of day, tape, or conditions.
Body measurement questions.
Which measurements can I track?
Where should I measure my waist?
What is waist-to-height ratio?
Does the chart predict my future measurements?
Can I hide measurement numbers?
Keep exploring
Body measurements
The scale is not the only measurement.
Track waist, arms, legs, and the direction between them — privately on Android.
- 1M+ installs since 2013
- Current version 4.2
- No account required
- Free on Android