Comparison

Simple Weight vs Happy Scale

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

Head to head
About

Simple Weight

Easily track your daily weight and body fat percentage with this intuitive tool. Visualize your progress with interactive graphs, record notes, and secure your data with passcode protection. Integrates with health apps for seamless data syncing.

Highlights
  • Daily weight and body fat recording
  • Interactive progress graphs
  • BMI calculation and indication
  • Note-taking for diet and exercise
  • Data import/export and automatic backup
  • Passcode lock with Touch ID
  • Health app integration
Features
Read full description

SimpleWeight is a very simple yet powerful weight control tool for iPhone/iPod touch. Awarded as "App Store Korea Rewind 2011" in Health/Fitness category! Many people try many diet methods and fail because it is hard to continue. With SimpleWeight, all you need to do is to measure your weight daily and type in. It shows the record in a graph along with your target weight. Knowing your weight and its trend is the first and the most important step for taking it under control. This app makes this step very simple & fun! Simplicity leas to Continuity! Continuity leads to the Result! Some of the feature of the app are: - Simple & easy-to-use user interface - Record body fat % as well as the body weight and see them in a graph! - BMI calculation and indication for daily data. Overweight area is indicated in yellow/red color in the graph. - Scrollable and zoomable graph to explore your past record. - Make notes about what you had and/or how much exercise you did, etc. for each record. - Make notes about events that affect weight changes, which appears on the graph! - Import/Export data from/to the online server. Automatic export for protecting your data from any accident is also available. - Passcode Lock to protect your privacy. Unlock with Touch ID. - Design theme switching functionality. Pick the design theme that you like the best! - Connection with Health Care App for even more convenience Writing to Apple's Health Care App is now supported. When you record your weight and body fat percentage on Simple Diet, they will automatically be written to your health care application *:..。o○ Premium Feature ○o。..:* "Remove Ads + Average Tool" add-on removes the ads below the graph, and replaces it with a toolbar that can show the averaged weight and body fat graph. The average range can be selected from a week, a month, or 3 months. ********************** Caution ********************** This app is intended for a healthy adult to reduce/manage their body weight. This app is not intended to give a medical advice nor does not guarantee that you succeed in achieving your target weight. If you are seeing a doctor or have any disorder, consult with your doctor on your weight management. Unreasonable dieting or exercising could damage your health. Try to do proper exercise for your condition and have well balanced diet. ****************************************************** It's very simple and easy to continue, and seeing the progress of weight control is fun! Have a nice & simple weight control with SimpleWeight! * If you found any problems, or have any questions or feature request, please contact us from the contact form: http://www.simpleweight.net/en/contact/ Or follow me on Twitter @SimpleWeight and mention us casually! ;) LICENSED APPLICATION END USER LICENSE AGREEMENT: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

Screenshots

Simple Weight4 screens
Happy Scale4 screens

Verdict

The call

The clearest difference is monetization model: Simple Weight at free with in-app purchases against Happy Scale's subscription. Happy Scale's advantage is ads (none vs shown) and update cadence (weekly vs every 2 months). On price, review sentiment, in-app purchases 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. Simple Weight sells 7 in-app purchases, starting at $0.99 per month and Happy Scale sells 8 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

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 86, so its average is the more settled of the two. Written reviews complicate that: 94% of Simple Weight's written reviews are positive against 91% of Happy Scale's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Simple Weight ships an update every 2 months, Happy Scale weekly. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 5 level
Simple Weight versus Happy Scale: the parameters behind the verdict, then further details
ParameterSimple WeightHappy Scale
PriceFreeFree
Rating4.6 (86 ratings)4.9 (58K ratings) — better
Positive reviews94.0% of reviews — better91.5% of reviews
Number of ratings8658K — better
Update frequencyEvery 2 monthsWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
Best chart rank#192 — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size57 MB65 MB
Age rating4+12+
Developeri-mobile Co.,LtdFront Pocket Software LLC

Customer experience

Simple Weight

All ratings86 ratings
Positive89.5%
Neutral4.7%
Negative5.8%
Written reviews67 reviews
Positive94.0%
Neutral4.5%
Negative1.5%

Happy Scale

All ratings57,904 ratings
Positive98.2%
Neutral1.2%
Negative0.6%
Written reviews715 reviews
Positive91.5%
Neutral1.7%
Negative6.9%

Bugs and requests

Simple Weight

Not enough reviews yet to summarise bugs or 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

In-app purchases

7 purchases

Simple Weight

Subscriptions1
  • Remove Ads + Average Tool$0.991 Month
One-time6
  • Healthy KitchenFree
  • Simple StyleFree
  • Smart Black2 variantsFree
Show 3 more
  • Flowery Garden2 variantsFree
  • Light NextFree
  • Remove Ads + Average Tool$2.99
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

Questions

Is Simple Weight free?
Simple Weight is free to download, with in-app purchases available.
Is Happy Scale free?
Happy Scale is free to download, with in-app purchases available.
Which has better reviews, Simple Weight or Happy Scale?
Happy Scale is rated higher. Simple Weight averages 4.6 out of 5 from 86 ratings, while Happy Scale averages 4.9 from 58K ratings.
Do Simple Weight or Happy Scale have ads?
Simple Weight shows ads; Happy Scale does not.
Which is updated more often, Simple Weight or Happy Scale?
Simple Weight ships an update every 2 months, and Happy Scale weekly. Most recently, Simple Weight was updated on September 22, 2026 and Happy Scale on September 24, 2026.

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