Body Fat Calculator - LeanFuel Apple

Body Fat Calculator - LeanFuel

Protein & Macro Tracker

Features & Capabilities

Stop guessing your protein needs. Calculate your real body fat % in 60 seconds and get a protein target based on lean mass — not total weight. Try free for 7 days.

Most protein calculators use your total body weight — so at 220 lbs, they tell you to eat 220g of protein a day. That's wrong, and you know it.

LeanFuel uses the U.S. Navy Method to calculate your actual body fat percentage from simple tape measurements. Then it gives you a protein target based on your lean body mass — the muscle you actually need to fuel.

HOW IT WORKS

  1. Enter your measurements (neck, waist, height, weight)
  2. Get your body fat %, lean mass, and fat mass instantly
  3. Receive a personalized daily protein target
  4. Log your protein and hit your goal every day

SMART PROTEIN TARGETS Your target adjusts based on your fitness goal and activity level:

  • Build Muscle: higher protein to fuel muscle growth
  • Lose Fat: extra protein to preserve lean mass in a deficit
  • Maintain: moderate protein for steady body composition
  • Recomp: optimized for simultaneous fat loss and muscle gain

TRACK YOUR BODY RECOMPOSITION

  • Body fat % over time (watch it go down)
  • Lean mass over time (watch it go up)
  • Protein target history with each measurement
  • Real body recomp data — not just the scale

DAILY PROTEIN LOGGING

  • 100+ built-in foods with verified protein values
  • Quick-log in one tap or add your own custom foods
  • Track daily grams vs. your target
  • Watch your protein ring fill up throughout the day

STAY MOTIVATED

  • Earn XP for logging, hitting targets, and measuring
  • Level up through 15 ranks from Beginner to Recomp Master
  • Unlock 19 achievement badges for streaks and milestones
  • Maintain daily log streaks and target streaks

BUILT FOR YOUR LIFESTYLE

  • Beautiful dark mode design
  • BMI calculator included
  • Metric and imperial units
  • 30 languages supported
  • No account required — your nutrition data stays on your device

Try LeanFuel free for 7 days. Then continue with a weekly ($4.99/week) or yearly ($29.99/year) subscription to unlock unlimited measurements, full charts, and all features.


LEGAL: Privacy Policy: http://www.jakubl.com/privacy.html Terms of Use (EULA): http://www.jakubl.com/terms.html

SUPPORT: support@jakubl.com X: @jakublaszczyk

User Growth & Download Statistics

App
By:
Jakub Laszczyk
Version:
1.0 Last updated: 2026-04-14
Version code:
884346446
Creation date:
2026-04-14
Compatible devices:
Size:
20.09MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-12
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Jakub Laszczyk
Apple Apps Store
https://apps.apple.com/us/app/body-fat-calculator-leanfuel/id6761960180
Website:
https://www.jakubl.com/

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