---
title: Research: How People Track Body Fat and Progress | ProgressLens
url: https://progresslens.app/research/
language: en
updated: 2026-11-13
---

# ProgressLens research

By the [ProgressLens team](https://progresslens.app/about/) · Updated November 13, 2026

Original data about how people track their bodies. Free to cite with a link.

[What lifters ask about body fat: 10,218 Reddit posts analysedOriginal research: 10,218 Reddit posts from 10 fitness and GLP-1 subreddits. Bulk or cut and body fat dominate; AI estimates disagree by 2–8 points.Read →](https://progresslens.app/research/what-lifters-ask-about-body-fat/)

## 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.

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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