Comparison

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

Sleep

This app offers a smart alarm clock designed to wake you during light sleep phases, with various alarm types including math problems. It also provides a library of relaxing sounds and music to help you unwind.

Highlights
  • Smart alarm for light sleep phases
  • Customizable standard alarms
  • Variety of relaxation sounds
  • Relaxation music genres
  • HealthKit integration for step tracking advice
  • Math equation or text-based wake-up challenges
Features
Read full description

Just relax with sounds! Alarm Clock: - Standart. Set up basic alarm clock using your mixes and melodies. - Smart. Set up alarm that will wake you up during your light sleep phase. - Coffee Nap. Set up an alarm for the coffee nap to boost up your daytime energy. - Power Clock. Solve math equation or type the proposed text to be sure that you wake up. Relaxation: - 12 types of sounds: ASMR, Nature, Water, Animal, City, Sci-Fi and more. - 7 genres of great relax music: Chill out, Lo-Fi, Ambient, Jazz, Piano and more. Integration with HealthKit: This integration gets information about numbers of your steps per day and gives you advise about needs number of steps to get asleep better. Information about the auto-renewal of subscription: • Payment will be charged to 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 • Account will be charged for renewal within 24-hours prior to the end of the current period. The cost depends on the selected plan • 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 Subscriptions are billed weekly, monthly, annually at the rate selected depending on the subscription plan. Subscriptions are billed weekly, monthly, annually at the rate selected depending on the subscription plan. Privacy Policy: http://drumpadapps.com/privacy-policy Terms of Use: http://drumpadapps.com/terms-of-use

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

Sleep4 screens
REM Sleep Tracker4 screens

Verdict

The call

The clearest difference is rating: REM Sleep Tracker at 4.2 against Sleep's 2.0. REM Sleep Tracker also leads on ads (none vs shown) and update cadence (every 2 weeks vs monthly). Sleep's advantage is iOS requirement (14.0 vs 16.0). On price, review sentiment, in-app purchases and monetization model 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 sells 2 in-app purchases, starting at $7.99 per 7 days 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

REM Sleep Tracker holds the better App Store score, 4.2 against 2.0. That said, the two scores are not equally well evidenced: REM Sleep Tracker has 49 ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

Sleep ships an update monthly, REM Sleep Tracker every 2 weeks. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
Sleep versus REM Sleep Tracker: the parameters behind the verdict, then further details
ParameterSleepREM Sleep Tracker
PriceFreeFree
Rating2.0 (5 ratings)4.2 (49 ratings) — better
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings549 — better
Update frequencyMonthlyEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPod — betteriPhone
Requires iOS14.0 — better16.0
Further details — not scored
Size303 MB25 MB
Age rating4+4+
DeveloperDPM APPS LPNicola Eusebi

Customer experience

Sleep

All ratings5 ratings
Positive20.0%
Neutral0.0%
Negative80.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

REM Sleep Tracker

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

In-app purchases

2 purchases

Sleep

Subscriptions2
  • Weekly Subscription3 Days trial$7.997 Days
  • Yearly Subscription$39.991 Year
2 purchases

REM Sleep Tracker

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

Questions

Is Sleep free?
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, Sleep or REM Sleep Tracker?
REM Sleep Tracker is rated higher. Sleep averages 2.0 out of 5 from 5 ratings, while REM Sleep Tracker averages 4.2 from 49 ratings.
Do Sleep or REM Sleep Tracker have ads?
Sleep shows ads; REM Sleep Tracker does not.
Which is updated more often, Sleep or REM Sleep Tracker?
Sleep ships an update monthly, and REM Sleep Tracker every 2 weeks. Most recently, Sleep was updated on November 3, 2026 and REM Sleep Tracker on November 3, 2026.

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