Know your numbers. See the trend.
BMI, body fat, BMR, waist-to-hip ratio, and your whole weight history — turned into one clear picture instead of a pile of numbers.
A BMI on its own barely tells you anything. Shape adds the context — body fat estimate, how many calories you actually burn in a day, where your waist-to-hip ratio sits, and whether the number on the scale is trending the way you think it is.
Instant BMI with WHO or DGE classification, presented as a clean, animated gauge instead of a bare number.
BMR, TDEE by activity level, body fat % (US Navy method), and waist-to-hip ratio with risk level.
Every measurement saved on your device, charted over time, with an optional goal weight to track toward.
A month of small, consistent habit-building days — with a proper finish when you complete all 31.
Pull your latest weight and today's steps from Apple Health automatically — no manual re-entry.
Shape speaks your language, with full metric, imperial, and stones support for height and weight.
Metric, imperial, or stones — whatever you think in. Takes about ten seconds.
BMI, classification, and a plain-language read on what your range means.
Log it again next week. Shape builds the history and the chart for you automatically.
The calculator is free, forever. Shape+ unlocks Body Metrics, unlimited history, the full 31-day challenge, and Apple Health sync.
Prices vary by region and are shown in the app before you subscribe. See Terms of Use for full subscription details.
Free to download. Premium optional.