Comparison

Happy Scale vs Slim Down Weight Loss

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

Slim Down Weight Loss

Achieve your weight loss goals with customized training programs and motivating coaching. Access a variety of strength, cardio, and flexibility workouts with HD instructional videos. Stream or download workouts for convenience.

Highlights
  • Customized weekly training programs
  • Strength, cardio, and flexibility exercises
  • HD instructional workout videos
  • Audio guidance from digital trainer
  • Stream or offline workout access
  • DJ mixes and motivating trainers
Features
Read full description

This is the complete weight loss app. Whether you want to lose a few pounds or over fifty pounds—this app will help you lose weight no matter your situation. Workouts use a variety of strength training, cardio endurance and flexibility exercises. Use this app to get that tight body you've always wanted! Follow weeks of customized training, and do fun and creative workouts. Your Fitivity app now has multiple training programs in it to help you get in shape! Switch between programs that were designed specifically for you! In addition to your weekly workouts, try out Fitivity COACHING! Coaching is a highly engaging exercise experience that combines mixes by DJ's and super motivating trainers to push you through workouts. • Audio guidance from your personal digital trainer • Customized workouts designed for you each week. • For each workout you are provided with HD instructional videos to preview & learn training techniques. • Stream workouts online or do workouts offline. Subscription Details For your convenience, subscription charges will be processed through your iTunes account, ensuring a seamless and secure payment experience. You can manage your subscription at any time, giving you full control over your membership. Should you decide to cancel, simply do so at least 24 hours before the end of your current subscription period to avoid auto-renewal. • Payment is charged to your iTunes account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. You can turn off the auto-renew subscription from your device settings. • Account will be charged for renewal within 24 hours before the end of the current period. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription. To manage your subscription or turn off auto-renewal on your iPhone: 1. Open the Settings app 2. Tap your name or Apple ID 3. Tap Subscriptions 4. Tap the subscription you want to manage 5. Use the options to manage your subscription Privacy Policy and Terms of Use: https://www.loyal.app/privacy-policy

Screenshots

Happy Scale4 screens
Slim Down Weight Loss4 screens

Verdict

The call

The clearest difference is monetization model: Slim Down Weight Loss at free with in-app purchases against Happy Scale's subscription. Happy Scale's advantage is ads (none vs shown) and update cadence (every 5 days vs monthly). On price, in-app purchases, device support 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 and Slim Down Weight Loss sells 11 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Happy Scale ships an update every 5 days, Slim Down Weight Loss monthly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 6 level
Happy Scale versus Slim Down Weight Loss: the parameters behind the verdict, then further details
ParameterHappy ScaleSlim Down Weight Loss
PriceFreeFree
Rating4.9 (58K ratings) — better—
Positive reviews91.6% of reviews — better66.7% of reviews
Number of ratings58K — better—
Update frequencyEvery 5 days — betterMonthly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
Best chart rank#187 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size66 MB111 MB
Age rating12++4
DeveloperFront Pocket Software LLCLoyal Health & Fitness, Inc.

Customer experience

Happy Scale

All ratings58,108 ratings
Positive98.2%
Neutral1.2%
Negative0.6%
Written reviews729 reviews
Positive91.6%
Neutral1.6%
Negative6.7%

Slim Down Weight Loss

Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

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

Slim Down Weight Loss

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
11 purchases

Slim Down Weight Loss

Subscriptions5
  • Monthly Subscription3 Days trial$0.991 Month
  • Fitivity Premium7 Days trial$1.991 Month
  • No ads for one month$1.991 Month
Show 2 more
  • Yearly Subscription$5.991 Year
  • Yearly Subscription7 Days trial$9.491 Year
One-time6
  • Entire Program -Weight Loss$4.99
  • Entire Program - Flat Stomach$4.99
  • Entire Program - HILT Workouts$4.99
Show 3 more
  • Entire Program - Self Defense and Conditioning$4.99
  • Purchase levels of all programs$19.99
  • Lifetime Premium Subscription$299.99

Questions

Is Happy Scale free?
Happy Scale is free to download, with in-app purchases available.
Is Slim Down Weight Loss free?
Slim Down Weight Loss is free to download, with in-app purchases available.
Do Happy Scale or Slim Down Weight Loss have ads?
Slim Down Weight Loss shows ads; Happy Scale does not.
Which is updated more often, Happy Scale or Slim Down Weight Loss?
Happy Scale ships an update every 5 days, and Slim Down Weight Loss monthly. Most recently, Happy Scale was updated on October 27, 2026 and Slim Down Weight Loss on October 24, 2026.

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