Comparison

Good Sleep vs REM Sleep Tracker

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

Head to head
About

Good Sleep

This app automatically tracks your sleep using an Apple Watch, analyzing your patterns with AI to provide a sleep score and detailed diagnostics. It features a smart alarm designed to wake you gently from deep sleep, helping you feel refreshed.

Highlights
  • Automatic sleep tracking
  • AI-powered sleep analysis
  • Sleep Score with diagnostics
  • Smart alarm clock
  • Health app integration
  • Sleep history view
Features
Read full description

AutoSleep Tracking for Apple Watch: * All you need to do is wear your Apple Watch to sleep. * Automatically logs your data 24/7 to analyze your sleep (including naps!) * AI-functionality analyses your sleep patterns. If you’re moving more or less than other users, our app adjusts automatically to your personal patterns. * The GoodSleep Sleep Score provides you with detailed metrics and clear diagnostics to help you understand your sleep patterns. * Fully integrated with the Health App, GoodSleep syncs automatically. * View completely your sleep history. Smart Alarm Clock for Apple Watch: * Wake up refreshed and ready for the day. Our smart alarm gently eases you out of deep sleep. * Simply set the time you want to wake up invigorated and renewed. * A simple interface and no need to use workout mode preserves your battery life. Gentle on your wrist, there will be no disturbances for your partner. Terms & Privacy Policy: https://bettersleepapp.com/goodSleep/privacyAndTerms.html

About

REM Sleep Tracker

This app analyzes Apple Watch sensor data to provide a sleep quality score. It offers detailed insights into sleep stages, heart rate, and weekly trends, helping users understand and improve their rest habits.

Highlights
  • Sleep quality scoring
  • Detailed sleep stage analysis (light, deep, REM)
  • Heart rate monitoring
  • Weekly trend tracking
  • Sleep bank concept for habit analysis
  • Apple Health integration
Features
Read full description

Sleep Monitor is the perfect app for people eager to enhance the quality of their nighttime rest. Thanks to an advanced algorithm, Sleep Monitor processes the data gathered by your Apple Watch sensors to provide you with an overall score representing the quality of your sleep. This innovative app offers a detailed analysis of the different sleep stages, monitoring light, deep, and REM sleep cycles, and providing information about your heart rate throughout the night. Additionally, Sleep Monitor allows you to track your progress with the "sleep bank" concept, a repository of your rest data that helps you better understand your habits and identify any issues. With Sleep Monitor, you can also monitor the weekly trends of various parameters, such as sleep duration, rest quality, and time spent in each sleep stage. This valuable information will enable you to make targeted lifestyle changes to improve your nighttime rest. Don't miss the opportunity to transform your Apple Watch into a powerful tool for better sleep and waking up more rejuvenated each day. Sleep Monitor is the ideal app for those seeking an ally in sleep management, with an intuitive design and a rich array of features. Download Sleep Monitor today and begin your journey towards more restful and regenerative sleep. Maximize the potential of your Apple Watch and discover how quality rest can improve your daily life! HealthKit Integrated with Apple Health for sleep stages, heart rate, respiratory frequency, age and gender data to calculate sleep quality. Sleep Monitor Premium Sleep Monitor offers a Premium version available as an auto-renewable subscription. Payment will be charged to iTunes Account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period at the rate of your selected plan above. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings on the device. Once purchased, refunds will not be provided for any unused portion of the term. Privacy policy: http://app.sleepscoreapp.com/Home/Privacy Terms of use: http://app.sleepscoreapp.com/Home/Terms

Screenshots

Good Sleep4 screens
REM Sleep Tracker4 screens

Verdict

The call

The clearest difference is review sentiment: Good Sleep at 56% against REM Sleep Tracker's 0%. Good Sleep also leads on rating (4.6 vs 4.2) and device support (3 vs 1). On price, ratings volume, update cadence and ads 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. Good Sleep sells 1 in-app purchase, starting at $4.99 per month and REM Sleep Tracker sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Good Sleep holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 86 and 49 respectively. Written reviews point the same way: 56% of Good Sleep's written reviews are positive against 0% of REM Sleep Tracker's.

UpkeepUpdate frequency

Good Sleep ships an update fortnightly, REM Sleep Tracker every 2 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Good Sleep versus REM Sleep Tracker: the parameters behind the verdict, then further details
ParameterGood SleepREM Sleep Tracker
PriceFreeFree
Rating4.6 (86 ratings) — better4.2 (49 ratings)
Positive reviews55.6% of reviews — better0.0% of reviews
Number of ratings86 — better49
Update frequencyFortnightlyEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS13.2 — better16.0
Further details — not scored
Size74 MB25 MB
Age rating4+4+
DeveloperWELLBEINE TECHNOLOGIES INCNicola Eusebi

Customer experience

Good Sleep

All ratings86 ratings
Positive90.7%
Neutral5.8%
Negative3.5%
Written reviews9 reviews
Positive55.6%
Neutral0.0%
Negative44.4%

REM Sleep Tracker

All ratings49 ratings
Positive79.6%
Neutral6.1%
Negative14.3%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

1 purchases

Good Sleep

Subscriptions1
  • 1-Month Subscription7 Days trial$4.991 Month
2 purchases

REM Sleep Tracker

Subscriptions2
  • Sleep Score Premium Yearly$9.991 Year
  • Sleep Score Premium Yearly7 Days trial$29.991 Year

Questions

Is Good Sleep free?
Good Sleep is free to download, with in-app purchases available.
Is REM Sleep Tracker free?
REM Sleep Tracker is free to download, with in-app purchases available.
Which has better reviews, Good Sleep or REM Sleep Tracker?
Good Sleep is rated higher. Good Sleep averages 4.6 out of 5 from 86 ratings, while REM Sleep Tracker averages 4.2 from 49 ratings.
Do Good Sleep or REM Sleep Tracker have ads?
Neither Good Sleep nor REM Sleep Tracker shows ads.
Which is updated more often, Good Sleep or REM Sleep Tracker?
Good Sleep ships an update fortnightly, and REM Sleep Tracker every 2 weeks. Most recently, Good Sleep was updated on October 21, 2026 and REM Sleep Tracker on October 24, 2026.

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