NIH BMI Calculator vs BMI Calculator・Weight Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NIH BMI Calculator
This tool helps screen for weight categories that may indicate potential health problems. It provides a fully functioning Body Mass Index calculator directly on your phone, along with access to valuable health resources.
- Body Mass Index calculation
- Weight category screening
- Access to NHLBI health resources
- Downloadable phone application
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The National Heart, Lung, and Blood Institute’s BMI (Body Mass Index) calculator is a useful tool to screen for weight categories that may lead to health problems. The downloadable phone application puts the fully functioning calculator right on your phone, along with links to resources on the NHLBI site.
BMI Calculator・Weight Tracker
Easily calculate your Body Mass Index (BMI) and track your weight progress. Visualize your trends with graphs, gain predictive insights, and set goals for your health journey. Supports metric and imperial systems, with Apple Watch integration.
- BMI Calculation
- Weight Tracking
- Metric and Imperial Systems
- Apple Watch Integration
- Graphs and Stats
- Predictive Insights
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Calculate your BMI (Body Mass Index) and monitor your weight with our user-friendly app. Whether you’re on a weight loss journey or aiming to maintain a healthy weight, our app provides essential tools to help you reach your goals. Key Features: • BMI Calculation: Easily calculate your BMI using your height and weight. • Metric and Imperial Systems: Choose your preferred measurement system for accurate results. • Weight Tracking: Log your weight regularly to track your progress over time. • Apple Watch Integration: Sync your weight data with Apple Watch for seamless tracking and analysis. • Beautiful Graphs and Stats: Visualize your weight trends with clear graphs and insightful statistics. • Predictive Insights: Understand your true weight trend, predict future weights, and set commitment goals. The BMI Calculator and Weight Loss is free to download and utilize. However, users can opt for a subscription to access additional features. Your subscription will automatically renew and you’ll be billed based on the plan you choose. You can cancel your subscription at any time in the App Store. Disclaimer: Our BMI Calculator is not intended for medical diagnostics. Always consult a healthcare professional before making any health-related decisions. Terms of use: https://aboutmeapps.com/terms-of-use.html Privacy policy: https://aboutmeapps.com/privacy-policy.html
Screenshots
Verdict
The clearest difference is review sentiment: BMI Calculator・Weight Tracker at 84% against NIH BMI Calculator's 31%. BMI Calculator・Weight Tracker also leads on rating (4.8 vs 2.9) and update cadence (every 2 months vs every 30 months). NIH BMI Calculator's advantage is in-app purchases (none vs 5) and iOS requirement (7.0 vs 14.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. BMI Calculator・Weight Tracker sells 5 in-app purchases, starting at $9.99 per month. NIH BMI Calculator asks for nothing beyond the download.
BMI Calculator・Weight Tracker holds the better App Store score, 4.8 against 2.9. That said, the two scores are not equally well evidenced: BMI Calculator・Weight Tracker has 517 ratings behind it against 52, so its average is the more settled of the two. Written reviews point the same way: 31% of NIH BMI Calculator's written reviews are positive against 84% of BMI Calculator・Weight Tracker's.
NIH BMI Calculator ships an update every 30 months, BMI Calculator・Weight Tracker every 2 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.
| Parameter | NIH BMI Calculator | BMI Calculator・Weight Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (52 ratings) | 4.8 (517 ratings) — better |
| Positive reviews | 30.7% of reviews | 84.0% of reviews — better |
| Number of ratings | 52 | 517 — better |
| Update frequency | Every 30 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 7.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 16 MB | 53 MB |
| Age rating | 4+ | 17+ |
| Developer | The National Heart Lung and Blood Institute | AboutMe Apps, Inc. |
Customer experience
NIH BMI Calculator
BMI Calculator・Weight Tracker
User reviews
NIH BMI Calculator
From 52 App Store ratingsWhat we love
- 👍 Simple and straightforward
- ✅ Calculates BMI correctly
- 🔗 Links to helpful information
- 🚫 No ads
- 💯 Works as intended (when functional)
Room to improve
- ❌ Cannot key decimal points
- ❌ Unusable in metric mode
- ❌ App crashes/won't open
- ❌ Outdated and not maintained
- ❌ Ignores physical fitness/gender
BMI Calculator・Weight Tracker
From 517 App Store ratingsWhat we love
- 👍 Simple and easy-to-use interface
- 📊 Effective weight tracking and logging
- 🎨 Aesthetically pleasing design
- ⚡ Quick daily input process
- 🏥 Integrates with Apple Health
Room to improve
- 🐛 App crashes after recent updates
- 🐛 App won't open on iOS 17.5.1
- 😔 Potentially negative psychological impact with BMI labels
- 🎨 Loss of color customization options
Bugs and requests
NIH BMI Calculator
Reported bugs
5 issues- App crashes immediately on launch
- App does not open
- Input fields non-responsive on active call
- App closes before loading
- App no longer works with latest iOS updates
Requested features
8 requests- Add decimal point input for weight
- Allow recording of daily weight and view as a graph
- Include gender input for BMI calculation
- Add option for recording daily exercise
- Add option for tallying fruit/vegetable intake
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- Optimize for newer iPhone models
- Store results within the app
- Include information within the app, not redirect to web
BMI Calculator・Weight Tracker
Reported bugs
4 issues- App stopped working after June 2024 update
- Crashes on iPad Air (5th Generation) with iOS 17.5.1
- Unable to open app on latest iOS versions
- App fails to launch after recent updates
Requested features
2 requests- Restore different color options for tracking
- More sensitive language for BMI categorization
In-app purchases
NIH BMI Calculator
No in-app purchases
BMI Calculator・Weight Tracker
- Monitor your weight & progress$9.991 Month
- Monthly Premium$9.991 Month
- Predict your future weight＋BMI7 Days trial$19.991 Year
Show 2 moreShow fewer
- Premium Year$19.991 Year
- Premium 3 Months$19.993 Months
Questions
Is NIH BMI Calculator free?
Is BMI Calculator・Weight Tracker free?
Which has better reviews, NIH BMI Calculator or BMI Calculator・Weight Tracker?
Do NIH BMI Calculator or BMI Calculator・Weight Tracker have ads?
Which is updated more often, NIH BMI Calculator or BMI Calculator・Weight Tracker?
Other comparisons
