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⋆

Improve your sleep with calming sounds, stories, and personalized plans. Features a gentle alarm and sleep tracker to help you wake up refreshed and establish a better sleep routine.

Highlights
  • 70+ sleep stories and sounds
  • Personalized sleep plans
  • Gentle alarm clock
  • ASMR and delta waves
  • Sleep tracking
  • Low light interface
Features
Read full description

Get an all-in-one solution for sleep problems and change your mornings forever! Follow your personal recommendations with Sleep Coach and fall asleep faster with ASMRs, calming sounds or sleep stories. SLEEP & SOUNDS BY VERV HELP YOU: ● FALL ASLEEP FASTER with sleep stories and relaxing sounds ● WAKE UP EASILY with gentle alarm and custom tones ● CREATE A PERFECT SLEEP ROUTINE with a personalized sleep plan IMPORTANT BENEFITS OF SLEEP & SOUNDS BY VERV: SLEEP STORIES & SOUNDS Calm down before going to bed and get into the sleeping mode with the help of more than 70 sleep stories, relaxing and ASMR sounds and delta waves. All these melodies and sounds are designed to help you relax and sleep better. PERSONAL SLEEP PLAN Our highly qualified sleep specialists conduct extensive and thorough research to develop custom sleep plans. Get a personal plan with individual-based tips designed specifically to help you reach your goal. ALARM СLOCK The alarm clock has a gentle mode with progressively intensifying custom tones to gently wake you up in the morning. SIMPLICITY The app has an easy-to-use interface and is adapted for low light conditions. BENEFITS OF PREMIUM VERSION FOR A BETTER SLEEP Ultimate your sleep experience with Premium and reach your goals faster. ● Get full access to the Library stocked with 70+ melodies. ● Benefit from your personal Sleep Plan. ● Unlock all soft and gentle wake-up sounds. ● Discover 30+ tips for better night’s sleep. ● No more annoying ads. For complete access to all features, you will need to enable: ● Notifications to get a full alarm experience; ● Apple Health for better health monitoring. Sleep Better. Live Better. SUBSCRIPTION TERMS & DETAILS The Sleep & Sounds by Verv app is FREE to download. Premium subscription makes all the app content available. ● Choose the length of subscription: 1 Month / 6 Months / 1 Year or Lifetime option. ● Payment will be charged to your iTunes Account at confirmation of purchase. ● Subscription with a free trial renews automatically to a paid subscription unless canceled in the iTunes Settings at least 24-hours before the end of the trial period. ● Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal ● 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 forfeit when the user purchases a subscription to that publication, where applicable. Privacy Policy: https://verv.com/sleep-ios-privacy Terms of Use: https://verv.com/sleep-ios-terms We are happy to hear from you! Send your questions and feedback to support@verv.com Follow us! Facebook: https://facebook.com/Verv Twitter: @verv_inc Instagram: @verv

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

Sleep⋆4 screens
REM Sleep Tracker4 screens

Verdict

The call

The clearest difference is rating: Sleep⋆ at 4.5 against REM Sleep Tracker's 4.2. Sleep⋆ also leads on review sentiment (8% vs 0%) and device support (3 vs 1). REM Sleep Tracker's advantage is update cadence (every 2 weeks vs monthly). On price, ratings volume, ads and in-app purchases 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 9 in-app purchases, starting at $9.99 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

Sleep⋆ holds the better App Store score, 4.5 against 4.2. Both are backed by a comparable volume of ratings — 135 and 49 respectively. Written reviews point the same way: 8% of Sleep⋆'s written reviews are positive against 0% of REM Sleep Tracker's.

UpkeepUpdate frequency

Sleep⋆ ships an update monthly, REM Sleep Tracker every 2 weeks. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
Sleep⋆ versus REM Sleep Tracker: the parameters behind the verdict, then further details
ParameterSleep⋆REM Sleep Tracker
PriceFreeFree
Rating4.5 (135 ratings) — better4.2 (49 ratings)
Positive reviews8.3% of reviews — better0.0% of reviews
Number of ratings135 — better49
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS13.0 — better16.0
Further details — not scored
Size126 MB25 MB
Age rating4+4+
DeveloperVerv Inc.Nicola Eusebi

Customer experience

Sleep⋆

All ratings135 ratings
Positive87.4%
Neutral2.2%
Negative10.4%
Written reviews24 reviews
Positive8.3%
Neutral8.3%
Negative83.3%

REM Sleep Tracker

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

In-app purchases

9 purchases

Sleep⋆

Subscriptions8
  • Premium Membership 1 Month7 Days trial$9.991 Month
  • Premium Membership 1 Month$9.991 Month
  • Premium Membership 1 Week3 Days trial2 variants$9.997 Days
Show 5 more
  • Premium Membership 1 Month$14.991 Month
  • Premium Membership 1 Year$39.991 Year
  • Premium Membership 6 Months7 Days trial$41.996 Months
  • Premium Membership 1 Year$59.991 Year
  • Premium Membership 1 Year$119.991 Year
One-time1
  • Lifetime Premium Membership$59.99
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?
Sleep⋆ is rated higher. Sleep⋆ averages 4.5 out of 5 from 135 ratings, while REM Sleep Tracker averages 4.2 from 49 ratings.
Do Sleep⋆ or REM Sleep Tracker have ads?
Neither Sleep⋆ nor REM Sleep Tracker shows ads.
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 October 14, 2026 and REM Sleep Tracker on October 8, 2026.

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