MyFitnessPal is a popular fitness app that helps users track their diet and exercise to achieve their fitness goals. It offers a...
Free with optional premium subscription
Best NIH Body Weight Planner Alternatives ranked by AI · updated Aug 2026
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NIH Body Weight Planner is an online research-based tool that models calorie intake, physical activity, and projected weight change over time. It is suited to adults who want a more detailed planning model than a basic daily-calorie calculator.
Developer: National Institute of Diabetes and Digestive and Kidney Diseases
Price: Free
🎯 niddk.nih.gov/bwp
Top 6 NIH Body Weight Planner alternatives
Lose It! is a popular weight loss app that helps users track their food intake, exercise, and set weight loss goals.
Free with optional premium subscription
CalorieCalculator.health is a web-based tool for estimating daily calorie needs from personal details such as age, sex, height, weight, and activity level....
Pros
- Quick browser-based estimates without account creation
- Useful for basic maintenance-calorie and weight-goal planning
- Lower commitment than full food-tracking apps
Cons
- Less comprehensive than apps with food databases and meal logs
- Results depend on self-reported activity and body measurements
- Does not replace individualized medical or dietary guidance
Cronometer is a nutrition tracking tool that focuses on micronutrients and offers detailed analysis of daily nutrient intake.
Pros
- Detailed nutrient tracking
- Customizable goals
Cons
- Less user-friendly interface
- Some features locked behind premium subscription
Free with premium options
5
MacroFactor
Stronger By Science
MacroFactor is a nutrition coaching and macro-tracking app for users who want adaptive calorie and macronutrient targets. Its standout feature is an...
Pros
- Adaptive targets are more responsive than FoodIntake.Space's basic journaling approach
- Excellent macro tracking for athletes and physique-focused users
- Trend-based weight analysis reduces day-to-day noise
Cons
- No permanent free tier after the trial
- More expensive than basic food diary services
- Requires consistent logging to make its adaptive algorithm useful
From $11.99/mo
6
Calculator.net Calorie Calculator
Calculator.net
Calculator.net Calorie Calculator estimates daily calorie requirements using the Mifflin-St Jeor and Harris-Benedict equations. It serves people who want a straightforward browser...
Pros
- Clearer methodology and formula explanations than CalorieCalculator.health
- Provides calorie targets for losing, maintaining, and gaining weight
- No account or app installation required
Cons
- No food diary or nutrition database
- Interface is more utilitarian than dedicated health apps
- Limited personalization beyond basic body and activity inputs
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