Comparison

SleepMatic 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

SleepMatic

Automatically track your sleep cycles and naps using your Apple Watch. Wake up to detailed sleep analysis, including when you fall asleep and wake up. Log your sleep patterns with notes and hashtags to identify trends and factors affecting your rest.

Highlights
  • Automatic sleep tracking
  • All-day and nap tracking
  • Tunable detection sensitivity
  • Detailed sleep analysis
  • Add notes and hashtags
  • Manual sleep editing
  • HealthKit integration
Features
Read full description

Sleep tracking should be effortless. SleepMatic automatically tracks your sleep using your Apple Watch. Simply wear your Watch to bed and wake up to a clear report—without starting a session, setting a sleep window, or remembering to stop tracking. Terms of use: http://www.vimo.co/termsofuse/ Privacy policy: http://www.vimo.co/privacy/ ‎ Automatic by design - Detects when you fall asleep and wake up - Tracks nighttime sleep and daytime naps - Works without a predefined sleep schedule - Lets you tune detection sensitivity to fit how you sleep Understand your nights See when you went to bed, fell asleep, woke up, and got out of bed. Review restful and restless periods, heart-rate information, and trends across nights, weeks, and months. Discover what affects your sleep Add notes and hashtags such as #coffee, #exercise, or #lateMeal. Compare your tagged nights over time and identify patterns in your routine. Your data, where you need it SleepMatic integrates with Apple Health and lets you correct recently detected sleep sessions when needed. Just wear your Apple Watch. SleepMatic handles the rest.

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

SleepMatic4 screens
REM Sleep Tracker4 screens

Verdict

The call

The clearest difference is review sentiment: SleepMatic at 48% against REM Sleep Tracker's 0%. SleepMatic also leads on in-app purchases (none vs 2) and ratings volume (8.8K vs 49). REM Sleep Tracker's advantage is price (Free vs $1.99) and update cadence (every 2 weeks vs monthly). On ads 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

REM Sleep Tracker is free to download; SleepMatic costs $1.99 up front. REM Sleep Tracker sells 2 in-app purchases, starting at $9.99 per year. SleepMatic asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SleepMatic holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: SleepMatic has 8.8K ratings behind it against 49, so its average is the more settled of the two. Written reviews point the same way: 48% of SleepMatic's written reviews are positive against 0% of REM Sleep Tracker's.

UpkeepUpdate frequency

SleepMatic ships an update monthly, REM Sleep Tracker every 2 weeks. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 2 level
SleepMatic versus REM Sleep Tracker: the parameters behind the verdict, then further details
ParameterSleepMaticREM Sleep Tracker
Price$1.99Free — better
Rating4.4 (8.8K ratings) — better4.2 (49 ratings)
Positive reviews48.0% of reviews — better0.0% of reviews
Number of ratings8.8K — better49
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.6 — better16.0
Further details — not scored
Size23 MB25 MB
Age rating4+4+
DeveloperVimo Labs Inc.Nicola Eusebi

Customer experience

SleepMatic

All ratings8,756 ratings
Positive85.9%
Neutral5.8%
Negative8.3%
Written reviews631 reviews
Positive48.0%
Neutral7.3%
Negative44.7%

REM Sleep Tracker

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

Bugs and requests

SleepMatic

Reported bugs

3 issues
  • App crashes when trying to view previous sleep data
  • Inconsistent sleep tracking, sometimes registers inactivity as sleep
  • Fails to sync sleep data to Apple Health on some occasions

Requested features

4 requests
  • Add ability to manually edit sleep data
  • Improve trend and history visualization
  • Implement automatic bedtime/wake up detection
  • Provide more customization options

REM Sleep Tracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

SleepMatic

No in-app purchases

2 purchases

REM Sleep Tracker

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

Questions

Is SleepMatic free?
SleepMatic costs $1.99, with no in-app purchases.
Is REM Sleep Tracker free?
REM Sleep Tracker is free to download, with in-app purchases available.
Which has better reviews, SleepMatic or REM Sleep Tracker?
SleepMatic is rated higher. SleepMatic averages 4.4 out of 5 from 8.8K ratings, while REM Sleep Tracker averages 4.2 from 49 ratings.
Do SleepMatic or REM Sleep Tracker have ads?
Neither SleepMatic nor REM Sleep Tracker shows ads.
Which is updated more often, SleepMatic or REM Sleep Tracker?
SleepMatic ships an update monthly, and REM Sleep Tracker every 2 weeks. Most recently, SleepMatic was updated on October 28, 2026 and REM Sleep Tracker on October 24, 2026.

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