Comparison

Happy Scale vs Fitdays

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

Fitdays

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.

Highlights
  • Record family weight data
  • Connect to smart weight scale
  • Chart and report display
  • Apple Health synchronization
  • Support for up to 24 users
  • Body measurement tracking
Features
Read full description

Fitdays is an application for recording family weight data. This application can help you connect a weight scale to measure and record weight, and provide chart display and reports that can be used with family members. In the iPhone based on iOS12, when you use our smart scale to measure your weight, the relevant data supports synchronization with Apple Health. This application is a family weight data recording application. All data is for reference only for weight control and long-term exercise and fitness monitoring. It is not used as a medical device data basis. If you have medical diagnosis or treatment decisions, please consult your doctor and other medical staff. ● Girth Chart Record Helping with better bodybuilding ● Measurement Instructions Guiding step by step ● Trend Chart Tracking every changes of body ● Family Use Full support up to 24 users ● 15 App Colors Popular colors of choice

Screenshots

Happy Scale4 screens
Fitdays4 screens

Verdict

The call

The clearest difference is review sentiment: Happy Scale at 92% against Fitdays's 28%. Happy Scale also leads on rating (4.9 vs 3.7) and update cadence (every 5 days vs every 3 weeks). Fitdays's advantage is in-app purchases (none vs 8) and device support (4 vs 2). On price, ads and iOS requirement 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. Fitdays asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Happy Scale holds the better App Store score, 4.9 against 3.7. That said, the two scores are not equally well evidenced: Happy Scale has 58K ratings behind it against 1.8K, so its average is the more settled of the two. Written reviews point the same way: 92% of Happy Scale's written reviews are positive against 28% of Fitdays's.

UpkeepUpdate frequency

Happy Scale ships an update every 5 days, Fitdays every 3 weeks. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

Scorecard8 real differences · 3 level
Happy Scale versus Fitdays: the parameters behind the verdict, then further details
ParameterHappy ScaleFitdays
PriceFreeFree
Rating4.9 (58K ratings) — better3.7 (1.8K ratings)
Positive reviews91.7% of reviews — better28.0% of reviews
Number of ratings58K — better1.8K
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
Best chart rank#198 — better—
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS16.015.0 — better
Further details — not scored
Size66 MB153 MB
Age rating12+4+
DeveloperFront Pocket Software LLCGUANGDONG ICOMON TECHNOLOGY CO., LTD

Customer experience

Happy Scale

All ratings58,108 ratings
Positive98.2%
Neutral1.2%
Negative0.6%
Written reviews735 reviews
Positive91.7%
Neutral1.6%
Negative6.7%

Fitdays

All ratings1,849 ratings
Positive65.1%
Neutral5.4%
Negative29.5%
Written reviews900 reviews
Positive28.0%
Neutral15.0%
Negative57.0%

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

Fitdays

From 1.8K App Store ratings

What we love

  • 🚀 Easy to use
  • 📊 Provides detailed body metrics
  • 🔗 Syncs with Apple Health
  • 💻 Works well with scale

Room to improve

  • 🐛 Connectivity issues with Bluetooth
  • 📉 Inaccurate body composition measurements
  • 🔍 Confusing data presentation
  • 🔒 Privacy concerns
  • 💤 Drains battery

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

Fitdays

Reported bugs

4 issues
  • App crashes on login
  • Fails to sync data consistently
  • Incorrect weight/BMI calculations
  • Calendar view not functioning properly

Requested features

4 requests
  • Add ability to manually edit/delete entries
  • Improve data visualization and charting
  • Implement pregnancy mode
  • Allow multiple user profiles with privacy

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

Fitdays

No in-app purchases

Questions

Is Happy Scale free?
Happy Scale is free to download, with in-app purchases available.
Is Fitdays free?
Fitdays is free to download, with no in-app purchases.
Which has better reviews, Happy Scale or Fitdays?
Happy Scale is rated higher. Happy Scale averages 4.9 out of 5 from 58K ratings, while Fitdays averages 3.7 from 1.8K ratings.
Do Happy Scale or Fitdays have ads?
Neither Happy Scale nor Fitdays shows ads.
Which is updated more often, Happy Scale or Fitdays?
Happy Scale ships an update every 5 days, and Fitdays every 3 weeks. Most recently, Happy Scale was updated on November 9, 2026 and Fitdays on November 6, 2026.

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