195+ iOS apps curated and reviewed
The best fatcalc apps on iPhone average 4.5★ across 195+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 |
| 2 |  | Free | 4.7★ (2.3M) | Yes | Yes | Jul 2026 |
| 3 |  | Free | 4.8★ (341K) | Yes | Yes | Jul 2026 |
| 4 |  | Free | 4.6★ (955) | No | No | Jul 2026 |
| 5 |  | Free | 4.8★ (15K) | No | Yes | Jul 2026 |
| 6 |  | Free | 4.6★ (16K) | No | Yes | Jul 2026 |
| 7 |  | Free | 4.1★ (55) | Yes | Yes | Jul 2026 |
| 8 |  | Free | 4.8★ (1.1K) | No | Yes | Jul 2026 |
Easily monitor your body composition with this app. It estimates body fat percentage, BMI, and Waist-to-Hip Ratio using established health metrics. Track your progress with interactive graphs and access helpful guides for accurate measurements.
This AI-powered app helps you achieve your health and fitness goals by tracking calories, macros, and water intake. It offers a comprehensive food database, workout logging, personalized goals, and meal planning to monitor your progress.
This app helps you achieve your fitness goals by tracking your calorie and macronutrient intake. Simply answer lifestyle questions to create a personalized plan, then snap photos of your meals for an instant nutritional breakdown. It aims to simplify dieting and empower users with the tools and information needed to succeed.
Estimate your body fat percentage using gender, height, and measurements. Compare your results with professionally rendered 3D body fat images for enhanced accuracy. Track changes in body composition over time.
Track your food, exercise, and weight with a comprehensive database and supportive community. Features include barcode scanning, image recognition, and integration with health apps. Premium options offer personalized meal plans and advanced tracking.
This app acts as your personal nutritionist, offering a personalized nutrition plan and helping you track your daily intake. It features an AI-powered camera for instant food recognition, tailored recipes, and progress monitoring to help you achieve your health and wellness goals.
Estimate your body fat and muscle mass using just your physique photos. Track your fitness progress visually over time without needing manual measurements or specialized equipment. This app is intended for adult users seeking fitness insights.
This app provides medical professionals with a comprehensive collection of formulas, scores, and classifications. It offers quick access to essential medical calculations with detailed background information and high-quality images. Users can easily search, store favorites, and switch between US and SI units.
This app tracks various body composition metrics like BMI, body fat, and muscle mass. It provides cloud-based data analysis and reports, allowing families to monitor their health together. Data can be synchronized with HealthKit for a comprehensive health overview.
Record and track family weight data with a smart scale. Visualize progress with charts and reports, and sync with Apple Health. Supports up to 24 users for comprehensive family fitness monitoring.
Calculate your daily calorie needs for weight management using advanced formulas. This tool helps determine energy expenditure for weight loss, gain, or maintenance, offering insights into BMR, RMR, and BMI.
Track your body composition, including BMI, body fat, muscle mass, and more. The app offers intelligent data analysis and reporting, with options for baby or pet weight tracking. It also integrates with Apple Health to share your health data.
Calculate key body metrics like BMI, BMR, and body fat percentage. Track progress with charts, access diet plans, recipes, and fitness blogs for a holistic approach to health.
Calculate and track your Body Mass Index (BMI) with this user-friendly app. It provides personalized health insights, ideal weight recommendations, and supports various units and classification systems. Monitor your weight journey and understand health risks.
This free scientific calculator offers essential features like RPN mode, unit conversions, and multiple undo/redo. It provides a taste of a more powerful version, with optional in-app purchases for expanded functionality.
Calculate your Body Mass Index (BMI) using weight and height. Log your BMI over time, visualize your progress with graphs, and export your data. This tool is designed for adults aged 20 and above.
This comprehensive calculator app offers a wide range of tools for everyday calculations, from basic arithmetic and scientific functions to unit and currency conversions. It includes specialized calculators for loans, health, fuel costs, GPA, and more, all within a clean and user-friendly interface.
This free app pairs with a smart scale to track comprehensive body composition data, including weight, body fat, and BMI. It helps users monitor fitness progress and set health goals. Data can sync with popular fitness platforms.
This app calculates personalized macronutrient targets for fat loss, muscle gain, or weight maintenance. It uses body fat percentage for greater accuracy than traditional BMI-based calculators. Achieve your fitness goals with precise nutrition guidance.
Easily calculate your daily calorie and macronutrient needs to achieve your fitness goals. Quickly convert alcohol intake into trackable macros to stay on course. This tool simplifies macro calculations for beginners and those seeking a fast, convenient method.