ProgressLens vs GainFrame
How ProgressLens and GainFrame differ, so you can pick the one that fits how you track progress.
Short answer
GainFrame is an iPhone-only, subscription app built around AI body-fat and physique analysis. ProgressLens is a private photo-and-measurement journal for iPhone and Android with a ghost overlay, no account and a one-time Pro. Pick GainFrame for AI estimates, ProgressLens for consistent private tracking on any phone.
Disclosure: we make ProgressLens, so it’s listed first. Details about other apps come from their own store listings, websites and help pages as of October 2026; prices and features change, so check the listing before you pay. We name each app’s weaknesses and our own.
| ProgressLens | GainFrame | |
|---|---|---|
| Platforms | iPhone, iPad, Android | iPhone (iPhone-only per its blog) |
| Price | Free 10 check-in days, then one-time Pro ($14.99 US) | Free tier; paid plan about $5.99/month (its blog) |
| Approach | Journal: matching photos + measurements | AI analysis of photos |
| Matching help | Ghost overlay + grid | Automatic alignment |
| Body-fat estimate | Tape-based calculator on this site | AI estimate from photos |
| Account / storage | No account, on device | Account; check its privacy policy |
AI estimates versus consistent photos
AI body-fat estimates from photos are interesting but sensitive to light, pose and clothing, so they wobble from week to week. Comparable photos plus a waist measurement show the trend directly. If you want a number, a tape-based estimate done the same way each time is free and repeatable: try our body fat calculator.
Choose GainFrame if…
you’re on iPhone, you want an AI estimate of body fat or a physique score, and a monthly subscription is fine.
Choose ProgressLens if…
you want photos that match week to week, measurements beside them and nothing leaving your phone, on Android or iPhone, paid once.
FAQ
Frequently asked questions
Is there a GainFrame alternative for Android?
Yes. ProgressLens runs on Android and iPhone. It doesn’t do AI analysis but covers consistent photos, measurements and comparisons.
Is there a GainFrame alternative without a subscription?
ProgressLens Pro is a one-time purchase ($14.99 US Google Play, October 2026).
Sources
- GainFrame blog, “Best Progress Photo Apps for Android (2026)”, July 2026
- ProgressLens: this website and the released apps, October 2026