Leaner - Body Fat Tracker
See the trend, not the noise
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Your scale jumps 2–4 points a day on water alone. Leaner smooths every reading into one true trend, projects your goal date honestly, and celebrates real progress.
See the trend, not the noise.
Make the most of the smart scale you already own.
A home body-fat scale can swing 2–4 percentage points a day on hydration alone - far more than the real change you're working for. So people give up, sure it isn't working. It usually is. You just couldn't see it.
Leaner does one thing, and does it properly: it turns your noisy daily body-fat readings into a single, stable trend line - so real progress finally shows through.
Why it's different • Trend over readings - the headline number is your smoothed true estimate, never a jumpy raw reading. • One metric, done right - body fat % only. No calorie logging, no macros, no weight-loss guilt. • Apple Health native - reads from any smart scale or caliper app you already use, and writes your manual entries back. Your data is never trapped. • Honest projection - a clearly-labelled estimate of when you'll hit goal at your current rate, with the uncertainty shown, not hidden.
How it works Every reading goes through a smoother that tracks both your level and your direction, so it shows today's real value instead of lagging behind like a 7-day average. Skip a few days, log twice in a morning, fat-finger a reading - Leaner handles it gracefully.
Free forever The smoothed trend, today's number, Apple Health sync, manual entry, your goal and projection, and CSV export - all free, no ads, ever.
Leaner+ Go deeper with advanced smoothing controls, the full Journal with streaks, milestones and celebrations, Home & Lock Screen widgets, category bands and maintenance mode, and Weekly Insights - a calm Sunday recap of your week.
Private by design All your data stays on your device and in Apple Health. No third-party analytics on health values. No tracking. No accounts.
Download Leaner and start seeing the trend.
A note on your health Leaner is a tracking and informational tool, not a medical device, and does not provide medical advice, diagnosis, or treatment. Body-fat readings and trends are estimates and should not be used to make medical decisions. Always consult a qualified healthcare professional before changing your diet, exercise, or health routine, and before acting on anything you see in the app.
Terms of Use (EULA): https://leaner.health/terms Apple standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://leaner.health/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Maximillian Evans, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Maximillian Evans
- Size
- 2.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Leaner+ Annual $19.99
- Leaner+ Monthly $1.99
- Leaner+ Lifetime $39.99
- Copyright
- © Max Evans