
Lean – a mobile app for real-time tracking of calories consumed, calories burned, metabolism, and step count: master your deficit to achieve your body composition goals.
The Only Way
to Lose Fat
CREATE A CALORIC DEFICIT
Lean is the only app that accurately calculates your calorie expenditure.
Calculate your body fat
with a single photo
✨🤳🏼
Body fat is essential for calculating your metabolism.
Your calories
with a single photo
Food database
& Barcode Scanner available
Join thousands of users
HOW TO BECOME LEAN ?
STEP 1: Bodyscan
Body fat percentage is a key factor in calculating your basal metabolic rate. Just take a photo, and our bodyscan will estimate your body fat.

STEP 2 : Basal Metabolic Rate (BMR) Tracking
Lean continuously recalculates your metabolism based on your physiological data to provide the most accurate tracking of your daily energy expenditure.

STEP 3 : Step Tracking (NEAT)
Step tracking is crucial for creating a caloric deficit. The energy burned through walking is the second-largest component of your daily expenditure.

STEP 3 : Exercise Tracking (EAT)
Lean accurately calculates the calories burned during your workouts by relying on your basal metabolic rate.

STEP 4 : Digestion Energy Tracking
Lean calculates the TEF (Thermic Effect of Food) — the energy your body uses to digest the food you consume. TEF is the third-largest component of daily energy expenditure.

Perfect Tracking of Your Daily Expenditure
Basal Metabolic Rate (BMR), Non-Exercise Activity from walking (NEAT), Exercise Activity from workouts (EAT), and the Thermic Effect of Food (TEF) — Lean tracks all of these in real time to accurately calculate your total daily energy expenditure.

STEP 5 : Caloric Intake Tracking
Lean lets you track your calorie intake in three ways: Food Database, Barcode Scanner, or Plate Analysis using Artificial Intelligence.

STEP 6: Caloric Balance Tracking
Lean calculates your Total Daily Energy Expenditure (TDEE) in real time and helps you eat exactly the right number of calories based on that expenditure. This ensures you stay perfectly on track to reach your Caloric Deficit goal.

Progression Pyramid
Lean’s Progression Pyramid is here to help: not sure what to adjust or stuck in your fat loss journey? Follow the recommendations in this pyramid and get your progress back on track!

The Latest Scientific Advances in Your Pocket
Lean is powered by a set of advanced equations and algorithms that adapt precisely to your biology: body fat percentage, weight, step count, eating habits, exercise routines, and more.
Easier Calorie Tracking
AI-powered photo scanning of your meals to instantly estimate calories.
Accurate Body Fat Percentage Calculation
Body fat calculated through photo scan using artificial intelligence.
Precise Metabolism Calculation
Your metabolism is calculated based on your body fat using equations grounded in the latest scientific research.
Metabolic Adaptation Awareness
Lean is the first app to accurately calculate your metabolic adaptation during a calorie deficit.
Step Count Integration
Lean tracks your steps and includes them in your daily caloric intake calculation.
Dynamic Calorie/Expenditure Adjustment
Throughout the day, your calorie goal adapts in real time to your energy expenditure and eating patterns, ensuring you reach your goals.
Join 10,000+ Users
Stay up to date with the latest features and updates.