Leanbody · An Atlas of the FormPlate I · mmxxvi
── A 90-second study in human composition

Your physique,
precisely
measured.

LeanBody returns your body fat percentage, lean mass, and FFMI from four photographs — front and back, flexed and relaxed — scored against the NHANES 2017–20 DXA reference cohort.

Get my body fat % →
$5 · No subscription
── The spectrumfig. i
shredded
cut
athletic
average
soft
heavier
♂
6–9%
10–13%
14–17%
18–22%
23–27%
28+%
♀
14–17%
18–21%
22–25%
26–30%
31–35%
36+%
About 1 in 7 adults reach athletic or leaner.
── How it works

No black box.
Here’s the method.

  1. i.
    Four photographs
    Front and back, flexed and relaxed, from your phone. They go straight to the model.
  2. ii.
    A frontier vision model reads them
    Not a custom-trained black box — it's the same class of multimodal model behind tools you already use, given a fixed protocol and all four photos at once.
  3. iii.
    Scored against NHANES DXA data
    You get a percentile against the CDC reference cohort, plus lean mass and FFMI. Then the photos are deleted.
See a full example reading →
── Why $5, not a free tool

Free tools vibe a number.

For a one-off rough check, a free tool is genuinely fine. This is for tracking — where the method has to stay fixed or the number is just noise.

Consistency
A free one-off — or asking ChatGPT — hands you a fresh guess each time with nothing to anchor it to. LeanBody uses the same four-photo protocol and benchmark every scan, so the number holds meaning across months.
A real benchmark
Your result is a percentile against NHANES DXA data, not an unanchored number.
Privacy by deletion
No account, no database. Photos are analysed, then deleted — they don't sit in a chat history.
No subscription
$5 once, covering the model and payment cost with a small margin. No upsell. Refund on request.
$5
Per scan
48h
Auto-delete
90s
Per analysis
method · multimodal vision-cortex · benchmarked against NHANES 2017–20 · photographs deleted on completion