--- title: Best Apps to Track GLP-1 Progress (Ozempic, Mounjaro) 2026 url: https://progresslens.app/best-glp-1-tracking-apps/ language: en updated: 2026-11-13 --- # The best apps to track GLP-1 progress By the [ProgressLens team](https://progresslens.app/about/) · Updated November 13, 2026 On a GLP-1, the scale drops quickly. These apps help you see what is changing underneath: fat, muscle and shape. Short answer To see whether GLP-1 weight loss is fat or muscle, ProgressLens gives an AI fat vs muscle signal from matched photos and waist, arm and shoulder measurements on iPhone and Android; or use a 3D scanner with lean mass estimates (MeThreeSixty, ZOZOFIT). Keep doses and side effects in your clinic’s app or a dedicated dose tracker. **On this page** - [Quick comparison](#quick) - [The apps](#apps) - [Which to pick](#verdict) - [FAQ](#faq) **Disclosure:** we make ProgressLens. Details about other apps come from their own store listings and websites as of November 2026; prices and features change, so check the listing before you pay. We name each app’s weaknesses and our own. ## Quick comparison | App | Platforms | What it tracks | Price | | ProgressLens | iPhone, Android | AI fat vs muscle signal from photos + waist, arms, shoulders | $39.99/year | | MeThreeSixty | iPhone, Android | 3D scans, lean mass estimates, GLP-1 dose log | Subscription | | ZOZOFIT | iPhone, some Android | 3D measurements, GLP-1 log and summaries | Free plan; Premium | | Your clinic’s app or a dose tracker | Varies | Doses, side effects, appointments | Varies | ## The apps ### 1. ProgressLens - iPhone, iPad, Android - AI Progress Report - Free download, Pro in-app - 11 languages - No account **Best for:** seeing whether you’re losing fat or muscle, privately, on any phone. Weight on GLP-1 medication drops fast, and the question that follows is how much of it is fat. ProgressLens keeps matched weekly photos and your tape measurements, and its AI report includes a muscle-loss signal: if your arms and shoulders shrink as fast as your waist while weight drops quickly, it flags it. Tell it you’re on a GLP-1 and the report is tailored to that. #### Good - AI Analyze: body-fat range, what changed, fat vs muscle, cut or bulk verdict - Reads photos and tape measurements together, so estimates stay consistent - Same app and AI on iPhone and Android, in 11 languages - No account; photos stay on your phone, analyzed photos aren’t stored or used for training - Ghost overlay of your last photo, six measurements with charts #### Watch out - No calorie, workout or dose tracking - No video timelapse export (use our free web tool) - No Apple Health or Health Connect sync - No app-specific passcode (use your phone’s lock) - No dose or side-effect tracking [Get ProgressLens →](https://progresslens.app/glp-1-progress-tracker/) ### 2. MeThreeSixty - iPhone, Android - Subscription **Best for:** a 3D view plus dose logging. Builds a 3D avatar from front and side photos with body fat and lean mass estimates, and logs GLP-1 doses. #### Good - Lean mass estimates - Dose tracking #### Watch out - Scans can be strict about pose [Full comparison →](https://progresslens.app/compare/progresslens-vs-methreesixty/) ### 3. ZOZOFIT - iPhone, some Android - Free plan + Premium **Best for:** measurement-heavy tracking with scans. A 3D body scanner with circumference measurements and a GLP-1 log with progress summaries. #### Good - 16 measurements - GLP-1 features #### Watch out - Device compatibility limits on Android [Full comparison →](https://progresslens.app/compare/progresslens-vs-zozofit/) ## Which should you pick? - An AI fat vs muscle check, privately, any phone: ProgressLens. - 3D scans and dose log: MeThreeSixty. - 3D measurements: ZOZOFIT. ## See how far you’ve come. Take a check-in, tap AI Analyze and get your Progress Report: body-fat range, what changed, fat or muscle, and whether to cut or bulk. On iPhone, iPad and Android, with no account. Your photos stay on your phone. **See also:** [Ozempic, Mounjaro, Zepbound: fat or muscle?](https://progresslens.app/guides/glp-1-fat-or-muscle/) · [GLP-1 progress month by month](https://progresslens.app/guides/glp-1-progress-month-by-month/) · [Mounjaro progress tracker](https://progresslens.app/mounjaro-progress-tracker/) · [Semaglutide vs tirzepatide muscle loss](https://progresslens.app/guides/semaglutide-vs-tirzepatide-muscle-loss/) FAQ ## Frequently asked questions **How do I know if I’m losing muscle on Ozempic or Mounjaro?** Compare two body fat readings taken the same way with the [fat vs muscle loss calculator](https://progresslens.app/tools/fat-vs-muscle-loss-calculator/), or watch your arm and shoulder measurements: if they fall about as fast as your waist, you may be losing muscle. Ask your clinician. **What should I track on a GLP-1?** Weekly weight and waist, monthly arms, shoulders and thighs, and matched front and side photos. Doses and side effects belong in your medication tracker. **How much muscle do people lose on GLP-1 drugs?** In trial substudies with DXA scans, roughly 25–40% of weight lost was lean mass, which includes water and organs as well as muscle. ## Sources - App Store and Google Play listings for each app, accessed November 2026 - ProgressLens, [What lifters ask about body fat](https://progresslens.app/research/what-lifters-ask-about-body-fat/), November 2026 --- ProgressLens is an AI progress photo app for iPhone, iPad and Android that turns your check-in photos and tape measurements into a Progress Report: your body-fat range, what changed, whether you are losing fat or muscle, and whether to cut, lean bulk, recomp or maintain. App Store: https://apps.apple.com/app/progresslens/id6806300575 Google Play: https://play.google.com/store/apps/details?id=app.progresslens