Body recomposition tracker
Same weight. Different body.
When you lose fat and build muscle at the same time, the scale barely moves for months. Your photos and waist measurement show what’s really happening.
- Private to you
- No account
- No subscription
- iPhone & Android

Week 1Week 16
Illustrative example photos.
In short
To track body recomposition, watch for a waist that goes down while your weight stays about the same and your arms, chest or shoulders hold or grow. Matching photos taken 8 to 12 weeks apart usually make it obvious. ProgressLens keeps all of these together on one private timeline.
The recomp signal
Weight flat. Waist down. Arms up.
That’s what working recomposition looks like. ProgressLens shows your photos and those numbers side by side, so you can see it instead of guessing.

How it works
Thirty seconds a week.
No setup, no sign-up, no learning curve. Open the app, take your photo, done.

Snap your photo
Front, side and back. Your last photo shows faintly on the screen, so you stand in the same spot every time.

Add a number or two
Weight and waist take ten seconds. Skip them if you’d rather not. The photos do the talking.

See the difference
Pick any two days and flip between them. That’s the moment it clicks.
FAQ
Questions, answered
How do I know if recomposition is working?
Your waist goes down while your weight stays roughly the same, and matching photos look leaner and fuller.
How long until I see it?
Usually 8–12 weeks of consistent training before photos show a clear difference.
Are my photos private?
Yes. They stay inside the app on your phone: not in your photo gallery, not in the cloud, and there’s no account. Nobody sees them unless you share.
Is it free?
Free to download and try, with every feature. Your first 10 check-ins are free, then one payment unlocks unlimited check-ins forever. No subscription.
Does it work on iPhone and Android?
Yes, on iPhone and iPad (iOS 17 or later) and Android (Android 7.0 or later).










