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

Calculate your Body Mass Index (BMI) and monitor your weight progress with detailed analytics and infographics. Track weight loss, analyze weight gain, and set target weights for personalized feedback. Features automatic cloud backup for your data.

Highlights
  • BMI calculation for multiple profiles
  • Weight monitoring and trend analysis
  • Body fat percentage insights
  • Data analytics with graphs and charts
  • Target weight setting
  • Automatic cloud backup
Features
Read full description

BMI Calculator lets you calculate your Body mass index so that you can find your ideal weight, monitor your realtime weight, get meaningful insights on your body fat percentage and more. Make your daily weight loss program effective with our data analytics, graphs and charts. It’s an ideal application for tracking your weight loss, analyzing your weight gain and tracking your current weight. KEY FEATURES • BMI Calculation for multiple user profiles. • Review analytics for up to six (06) months. • Add target weight to get regular feedback. • Infographics detailing your BMI, weight trends & fat percentage rates. • Automatic cloud backup, so that you never lose your data. DISCLAIMER Body mass index (BMI) is a person’s weight in kilograms divided by the square of height in meters. BMI is an inexpensive and easy screening method for weight category: underweight, healthy weight, overweight, and obesity. BMI does not measure body fat directly, but BMI is moderately correlated with more direct measures of body fat. PRIVACY POLICY https://sites.google.com/appnap.io/privacy TERMS OF USE https://sites.google.com/appnap.io/terms SUPPORT DESK If you have any questions or feedback, feel free to contact us here: • Email: info@appnap.io • Facebook: https://www.facebook.com/appnap • Official Website: https://appnap.io

Screenshots

Happy Scale4 screens
BMI Calculator, Weight Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: BMI Calculator, Weight Tracker at none against Happy Scale's 8. BMI Calculator, Weight Tracker also leads on iOS requirement (13.0 vs 16.0). Happy Scale's advantage is update cadence (weekly vs every 4 months) and ratings volume (58K vs 88). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Happy Scale sells 8 in-app purchases, starting at $1.99 per month. BMI Calculator, Weight Tracker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Happy Scale holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Happy Scale has 58K ratings behind it against 88, so its average is the more settled of the two. Written reviews point the same way: 91% of Happy Scale's written reviews are positive against 71% of BMI Calculator, Weight Tracker's.

UpkeepUpdate frequency

Happy Scale ships an update weekly, BMI Calculator, Weight Tracker every 4 months. The most recent releases landed on September 26, 2026 and September 20, 2026 respectively.

Scorecard8 real differences · 3 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) — better4.6 (88 ratings)
Positive reviews91.5% of reviews — better71.4% of reviews
Number of ratings58K — better88
Update frequencyWeekly — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
Best chart rank#179 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size65 MB8 MB
Age rating12+4+
DeveloperFront Pocket Software LLCAppnap Technologies Limited

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 ratings88 ratings
Positive89.8%
Neutral5.7%
Negative4.5%
Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

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

Not enough reviews yet to summarise bugs or requests.

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
None

BMI Calculator, Weight Tracker

No in-app purchases

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 no in-app purchases.
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 4.6 from 88 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 4 months. Most recently, Happy Scale was updated on September 26, 2026 and BMI Calculator, Weight Tracker on September 20, 2026.

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