BodyWHAT is the best Body Composition app you'll find. No calipers, no DEXA, no gym scale — just your phone is required.

See how it works

How it works

From your phone to a full body read — in minutes

  1. 1

    Prop up your phone and listen to the audio guide

    Prop your phone up, step back, and the spoken cues walk you through each pose completely hands-free.

  2. 2

    Get your Body Composition

    Body-fat %, lean mass, macros, measurements, body shape, posture and body-fat heatmap — each given with a reference range.

  3. 3

    Get AI Coaching & thorough tracking

    Rob builds your training and nutrition plans, then your timeline follows every metric, scan to scan.

Body composition

Your whole body, quantified

One scan returns a plethora of numbers; body-fat %, lean and fat mass, FFMI, calories and proteins needs, measurements, body shape, posture data... and even a body-fat heatmap. Every metric comes with a reference range, so you know exactly where you stand.

Progress

Watch yourself change

Do precise before/after visual comparisons between two scans. Play a smooth animation of your transformation over time. Follow every one of your metrics on a timeline. Set goals and track your progress towards them.

Body fat ▼ 34.5 ppMuscle mass ▲ 20 kg
20242026

AI coaching

A coach that actually knows your body

Meet Rob. He reads your scans, goals and health profile, answers anything from training to nutrition, and builds tailored training and nutrition plans for you — sets, reps, macros, recipes, and a demo clip for every exercise.

You're holding lean mass well at 18%. Let's bias the next block toward your posterior chain and add 30 g protein on training days.
Training planPush day · 5 exercises
Romanian Deadlift4 × 8 · rest 90s
Nutrition planHigh-protein · 5 meals
2,340 kcal190g protein210g carbs60g fat

Any phone

No DEXA, no calipers, no smart scale. If you can take a selfie, you can scan.

Private by design

Automatic face-blur, your photos stay yours, and you choose what's ever shared.

Grounded in science

Estimates blend cutting edge vision models with established body-comp formulas and your own measurements.

Find out what your body is made of

Frontal scans are free but output base metrics only.
Subscribing to Premium unlocks all features and comes with a 7-day trial period cancellable any time.