Metabolica - Calorie Tracker
Scientific Metabolism Analysis
Estimate your daily calories and track food, workouts and progress on iPhone.
A TDEE calculator app estimates how many calories your body uses in a day. Metabolica calculates your BMR and TDEE with three published formulas, so you can set a daily calorie target and log food against it. These numbers are estimates, not a medical assessment.
Metabolica screenshots
Swipe →What Metabolica does
Many people want to change their weight, but they do not know how many calories their body needs. Online formulas give different answers, and a calorie target from a random chart may not fit your age, height or activity. A calculator that shows its method makes the estimate easier to understand and to check.
Metabolica starts from two numbers. BMR is the energy your body uses at rest. TDEE is your estimated total daily use, which adds activity to BMR. The app asks for age, height, weight and activity level, then shows both numbers, the body mass index and a daily calorie target.
The app offers three formulas: Mifflin-St Jeor, Harris-Benedict and Katch-McArdle. You can choose the one that fits your body best and switch at any time. Eight nutrition profiles then apply their own macro split to your daily calorie target, from balanced eating to ketogenic and high-protein plans.
The sections below explain the core features, the Pro analysis modules, and how the numbers should be read. Metabolica gives general estimates for information only. It does not diagnose a condition.
Features
Core calculations
- BMR, TDEE and BMI from your age, height, weight and activity level.
- A choice of Mifflin-St Jeor, Harris-Benedict and Katch-McArdle formulas.
- Eight nutrition profiles, from balanced to ketogenic, vegan and intermittent fasting.
- A personal setup with your daily calories, macros, water target and a goal date.
Food and exercise
- A food database with more than 100 everyday foods.
- Track protein, carbs and fat against your daily targets.
- Workout plans with more than 50 movements, with form guidance and calorie estimates.
Progress tracking
- Weekly calorie charts and a long-term weight trend.
- Water intake tracking in the same place as your other metrics.
- Progress charts and photos, in Metabolica PRO.
Metabolica PRO modules
- Metabolic Adaptation Radar, which flags diet plateau risk.
- EPOC Tracker, which estimates calorie burn after exercise.
- NEAT Analyzer, which estimates calories from everyday movement.
- Digestive Efficiency, which uses Atwater factors for energy in food.
- Four more modules cover circadian timing, nutrient interactions, minerals and supplements.
Who it is for
- Good for people who want a starting calorie estimate before they change their diet.
- Good for people who like to see the formula behind a number.
- Good for people who log meals and want macros on one screen.
- Good for people who plan workouts around a daily calorie target.
- Good for anyone who wants to compare formulas for their own body.
Privacy
According to its privacy policy, Metabolica keeps your body metrics, food log and goals on your device. Subscriptions are handled by Apple, and the app does not hold your payment details.
Read the Metabolica privacy policyPrice
Metabolica is free to download. Metabolica PRO is a weekly, monthly, 3-month or yearly subscription, or a one-time lifetime unlock. Eligible new subscribers can get a free trial on selected plans.
Terms of useMetabolica questions, answered
What is the difference between BMR and TDEE?
BMR is the energy your body uses at rest. TDEE adds the energy you use for activity and daily movement. Metabolica estimates both from your body measurements and activity level, so you can see the gap between them.
Which formula does Metabolica use?
Metabolica offers Mifflin-St Jeor, Harris-Benedict and Katch-McArdle. You can choose the one that fits your body best and switch at any time. Katch-McArdle works from lean body mass, so it needs a reliable estimate of that value.
Are the calorie numbers exact?
No. BMR and TDEE are estimates from equations. Your real energy use depends on sleep, muscle mass, health and daily habits. Track your weight over several weeks and adjust your plan. For a large change in diet, ask a doctor or dietitian first.
Can I use Metabolica without a subscription?
Yes. The app is free to download, and the core calculator and food log are available without a subscription. Metabolica PRO adds the eight advanced modules, unlimited food logging, the workout plan and progress photos.
Is Metabolica a medical app?
No. Metabolica gives general nutrition information and estimates for information only. It does not diagnose conditions. Talk to a qualified healthcare provider before major changes to your diet, supplements or exercise.
From our blog
- 5 min read
BMR vs TDEE: How Many Calories Do You Really Burn?
BMR vs TDEE explained: what each number means, how the Mifflin-St Jeor formula works, a worked example, and how to set a calorie target.
- 5 min read
How Many Calories to Lose Weight? A Simple Method
How many calories to lose weight: calculate your TDEE, set a moderate calorie deficit, check the weekly pace and see why progress stalls. With an example.
- 5 min read
How to Calculate Macros From Your Calories
How to calculate macros: protein, carbs and fat grams from a calorie target, using 4, 4 and 9 kcal per gram. Worked example and a table of splits.
- 5 min read
How to Track Body Measurements at Home
How to track body measurements at home: where to measure waist, hip, chest, arm, thigh and neck, why tape measurements help, and a weekly log example.
Get Metabolica free.
Free on the App Store for iPhone and iPad (iOS 15.0 or later). Android is coming soon.
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