Comparison

Sleep Tracker vs Thin4Fun

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

Head to head
About

Sleep Tracker

This app helps you improve your sleep with white noise, guided stories, and breathing exercises. Track your sleep duration and quality with detailed reports to understand your rest patterns and make informed adjustments for a healthier lifestyle.

Highlights
  • Customizable white noise mixes
  • Library of sleeping stories
  • Sleep duration and quality tracking
  • Detailed sleep reports and trends
  • Guided breathing exercises
  • AI dream analysis
Features
Read full description

Unlock the Secrets of Restful Sleep! Key Features: • White Noise: Immerse yourself in tranquility with our app. Effortlessly drift off to sleep with our extensive collection of soothing white noise. Customize your perfect sleep environment by mixing up to 8 different white noises, each with independent volume control. • Sleeping Stories: Indulge in a treasure trove of literary masterpieces and beautiful prose. Embark on a journey to dreamland with our rich library of classic novels and captivating essays, each carefully selected to soothe your mind and prepare you for a peaceful slumber. • Sleep Tracker: Our user-friendly interface makes it easy to monitor your sleep duration and quality, providing the data you need to make informed adjustments for a healthier lifestyle. • Sleep Report: Gain insights into your sleep quality, duration, and trends over time with our comprehensive sleep statistics. Stay on top of your sleep health for a better life. • Breathing Exercises: Relax and prepare for sleep with our guided breathing exercises. Adjust your breathing patterns with pre-set templates designed to help you achieve relaxation and balance. Download now to unlock the secrets of rejuvenating sleep. Join our community and experience the blissful world of peaceful slumber. SUBSCRIPTION INFO: Subscribe to access all features, tools, and content. • Subscription lengths: Weekly, yearly • Your payment will be charged to your iTunes Account upon confirmation of purchase. • Manage your subscriptions and turn off auto-renewal from your Account Settings after purchase. • Your subscription will automatically renew unless you turn off auto-renew at least 24 hours before the current period ends. • Renewal cost will be charged to your account within 24 hours before the current period ends. • Manage your membership and turn off auto-renew from your Apple account. • When canceling a subscription, it remains active until the end of the period. Auto-renewal will be disabled, but the current subscription is non-refundable. • Any unused portion of a free trial, if offered, will be forfeited upon purchasing a subscription. Terms of Service: https://www.xiaoyaohuyu.tech/TopSleepTracker/TSTTermsOfService.html Privacy Policy: https://www.xiaoyaohuyu.tech/TopSleepTracker/TSTPrvacyPolicy.html Have a feature request for a future version of the app? Contact us at xiaoyaohuyu@sina.cn

About

Thin4Fun

This app helps you achieve your weight loss goals and live a healthier life. It provides access to medical professionals, educational resources, and a supportive community to make your journey enjoyable.

Highlights
  • Weight loss guidance
  • Access to medical professionals
  • Educational resources
  • Community support
  • Healthier lifestyle promotion
Features
Read full description

WEIGHT LOSS MADE SIMPLE | Our mission is to empower YOU to lead a longer, healthier life, achieve your desired weight, and have fun along the way. Join today to have access to a medical professional, education, community support, and much more!

Screenshots

Sleep Tracker4 screens
Thin4Fun4 screens

Verdict

The call

The clearest difference is rating: Thin4Fun at 5.0 against Sleep Tracker's 4.5. Thin4Fun also leads on in-app purchases (none vs 3) and ads (none vs shown). Sleep Tracker's advantage is update cadence (every 2 weeks vs every 26 months) and ratings volume (77 vs 1). On price, 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. Sleep Tracker sells 3 in-app purchases, starting at $4.99 per 7 days. Thin4Fun asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Thin4Fun holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Sleep Tracker has 77 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Sleep Tracker ships an update every 2 weeks, Thin4Fun every 26 months. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

Scorecard6 real differences · 4 level
Sleep Tracker versus Thin4Fun: the parameters behind the verdict, then further details
ParameterSleep TrackerThin4Fun
PriceFreeFree
Rating4.5 (77 ratings)5.0 (1 ratings) — better
Positive reviews71.4% of reviews—
Number of ratings77 — better1
Update frequencyEvery 2 weeks — betterEvery 26 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone
Requires iOS16.016.0
Further details — not scored
Size112 MB89 MB
Age rating9+12+
DeveloperXiaoyao AppsThin4Fun LLC

Customer experience

Sleep Tracker

All ratings77 ratings
Positive87.0%
Neutral6.5%
Negative6.5%
Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

Thin4Fun

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Sleep Tracker

Subscriptions3
  • Top Sleep Premium3 Days trial$4.997 Days
  • Top Sleep Premium$24.991 Year
  • Top Sleep Premium$49.991 Year
None

Thin4Fun

No in-app purchases

Questions

Is Sleep Tracker free?
Sleep Tracker is free to download, with in-app purchases available.
Is Thin4Fun free?
Thin4Fun is free to download, with no in-app purchases.
Which has better reviews, Sleep Tracker or Thin4Fun?
Thin4Fun is rated higher. Sleep Tracker averages 4.5 out of 5 from 77 ratings, while Thin4Fun averages 5.0 from 1 ratings.
Do Sleep Tracker or Thin4Fun have ads?
Sleep Tracker shows ads; Thin4Fun does not.
Which is updated more often, Sleep Tracker or Thin4Fun?
Sleep Tracker ships an update every 2 weeks, and Thin4Fun every 26 months. Most recently, Sleep Tracker was updated on October 15, 2026 and Thin4Fun on October 12, 2026.

Other comparisons