Comparison

Happy Scale vs BMI Calculator・Weight Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Happy Scale

This app helps you understand your weight loss journey by analyzing scale fluctuations. It smooths out daily variations to reveal your true progress, predict future weights, and break down goals into manageable milestones.

Highlights
  • See true progress with mathematical analysis
  • Smooth out weigh-in fluctuations
  • Predict future weight
  • Break down goals into milestones
  • Integrates with Apple Health
  • BMI calculator
Features
Read full description

Dieting is hard enough. But when you work hard, hop on the scale, and see a number that’s higher than yesterday? Well, that’s just not fair! It’s time to tame the scale! Happy Scale helps you make sense of the frustrating ups and downs of weigh-ins by using mathematical analysis to make sense of your scale weights. You’ll: • understand your true trend, • take the sting out of plateaus, and • be able to predict what you’ll weigh for an upcoming event • SEE YOUR TRUE PROGRESS: Happy Scale uses sophisticated math to learn the true trend of your progress. You can see what you’re really losing each week. • NO MORE PLATEAUS: Use the moving average progress tracking options to see steady progress every day! • SLOW AND STEADY WINS THE RACE: Have a lot to lose? Break your weight loss goal into small, incremental milestone goals so you can focus on short-term, achievable goals! • THE PERFECT SUPPLEMENT: Use this app in conjunction with other popular apps. Weight entries can be automatically imported from apps that support exporting to the Apple Health app, and Happy Scale will export all your weights to Apple Health so other apps can see them. • IMAGINE YOUR SUCCESS: See predictions about what you’ll weigh in the future if you keep up your current trends, and set commitment goals for yourself! • KNOW YOUR NUMBERS: Our new BMI calculator shows you exactly where you stand and what weight ranges you need to hit for different health categories. No more guessing if you’re almost there! • WORKS ON ALL YOUR DEVICES: Seamlessly sync between your iPhone and iPad! So, have your previous diets failed because you lost motivation? Try Happy Scale today and join thousands of users who use this app to TAME THE SCALE! ------------------ This app optionally integrates with Apple Health. It is an opt-in feature that’s accessible from the Settings menu. ------------------ If you purchase a monthly or yearly subscription, payment will be charged to your iTunes account. Your account will automatically be charged for renewal within 24-hours prior to the end of the current subscription unless you disable auto-renew. You can turn off auto-renewal at any time by going to your Account Settings on the App Store after purchase. Privacy Policy: https://happyscale.com/privacy Terms of Use: https://happyscale.com/terms

About

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.

Highlights
  • BMI Calculation
  • Weight Tracking
  • Metric and Imperial Systems
  • Apple Watch Integration
  • Graphs and Stats
  • Predictive Insights
Features
Read full description

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

Happy Scale4 screens
BMI Calculator・Weight Tracker4 screens

Verdict

The call

The clearest difference is monetization model: BMI Calculator・Weight Tracker at freemium against Happy Scale's subscription. BMI Calculator・Weight Tracker also leads on iOS requirement (14.0 vs 16.0). Happy Scale's advantage is update cadence (weekly vs every 2 months) and ratings volume (58K vs 508). On price, rating, review sentiment and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Happy Scale sells 8 in-app purchases, starting at $1.99 per month and BMI Calculator・Weight Tracker sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Happy Scale against 4.8 for BMI Calculator・Weight Tracker. That said, the two scores are not equally well evidenced: Happy Scale has 58K ratings behind it against 508, so its average is the more settled of the two. Written reviews are what separate them: 91% of Happy Scale's written reviews are positive against 84% of BMI Calculator・Weight Tracker's.

UpkeepUpdate frequency

Happy Scale ships an update weekly, BMI Calculator・Weight Tracker every 2 months. The most recent releases landed on September 26, 2026 and September 13, 2026 respectively.

Scorecard5 real differences · 6 level
Happy Scale versus BMI Calculator・Weight Tracker: the parameters behind the verdict, then further details
ParameterHappy ScaleBMI Calculator・Weight Tracker
PriceFreeFree
Rating4.9 (58K ratings) — better4.8 (508 ratings)
Positive reviews91.5% of reviews — better84.0% of reviews
Number of ratings58K — better508
Update frequencyWeekly — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
Best chart rank#179 — better—
DevicesiPhone, iPadiPhone, iPod, Apple Watch — better
Requires iOS16.014.0 — better
Further details — not scored
Size65 MB53 MB
Age rating12+17+
DeveloperFront Pocket Software LLCAboutMe Apps, Inc.

Customer experience

Happy Scale

All ratings57,904 ratings
Positive98.2%
Neutral1.2%
Negative0.6%
Written reviews716 reviews
Positive91.5%
Neutral1.7%
Negative6.8%

BMI Calculator・Weight Tracker

All ratings508 ratings
Positive94.7%
Neutral3.7%
Negative1.6%
Written reviews25 reviews
Positive84.0%
Neutral12.0%
Negative4.0%

User reviews

Happy Scale

From 58K App Store ratings

What we love

  • 👍 Excellent weight loss support tool
  • 👍 Motivating and engaging to track weight
  • 👍 Provides great insights and predictions
  • 👍 Smooths out weight fluctuations
  • 👍 Breaks down weight loss journey into milestones

Room to improve

  • 🐛 Reminders don't work for some users
  • 💰 Subscription model is expensive for some

BMI Calculator・Weight Tracker

From 508 App Store ratings

What 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

Happy Scale

Reported bugs

1 issue
  • Reminders don't work for some users

Requested features

4 requests
  • Add ability to track body measurements and body fat percentage
  • Provide more chart/graph options (60-day, 6-month)
  • Add a watch app or complication for easier access
  • Implement more celebratory features when reaching goals

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

8 purchases

Happy Scale

Subscriptions2
  • Happy Scale Deluxe (Monthly)7 Days trial$1.991 Month
  • Happy Scale Deluxe (Yearly)7 Days trial$11.991 Year
One-time6
  • Tip $1$0.99
  • Tip $3$2.99
  • Tip $5$4.99
Show 3 more
  • Tip $10$9.99
  • Happy Scale Premium (Lifetime)$39.99
  • Happy Scale Deluxe (Lifetime)$39.99
5 purchases

BMI Calculator・Weight Tracker

Subscriptions5
  • Monitor your weight & progress$9.991 Month
  • Monthly Premium$9.991 Month
  • Predict your future weight+BMI7 Days trial$19.991 Year
Show 2 more
  • Premium Year$19.991 Year
  • Premium 3 Months$19.993 Months

Questions

Is Happy Scale free?
Happy Scale is free to download, with in-app purchases available.
Is BMI Calculator・Weight Tracker free?
BMI Calculator・Weight Tracker is free to download, with in-app purchases available.
Which has better reviews, Happy Scale or BMI Calculator・Weight Tracker?
Happy Scale is rated higher. Happy Scale averages 4.9 out of 5 from 58K ratings, while BMI Calculator・Weight Tracker averages 4.8 from 508 ratings.
Do Happy Scale or BMI Calculator・Weight Tracker have ads?
Neither Happy Scale nor BMI Calculator・Weight Tracker shows ads.
Which is updated more often, Happy Scale or BMI Calculator・Weight Tracker?
Happy Scale ships an update weekly, and BMI Calculator・Weight Tracker every 2 months. Most recently, Happy Scale was updated on September 26, 2026 and BMI Calculator・Weight Tracker on September 13, 2026.

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