Comparison

Sleep Central vs Rem

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

Head to head
About

Sleep Central

This app helps you improve your sleep with a smart alarm, sleep aid features, and detailed monitoring. It provides suggestions for better sleep and integrates with Apple Health to track your sleep data.

Highlights
  • Sleep aid with light and music
  • Smart alarm for optimal wake-up times
  • Accurate sleep monitoring
  • Targeted improvement suggestions
  • Apple Health integration
Features
Read full description

Sleep CENTRAL focus on sleep monitoring,sleep-aid, smart alarm. 1.Sleep-Aid Reliable sleep mechanism with light and music enabling instant sleeping. 2.Smart Alarm Waking up in the most suitable time creating good mood every day. 3.Sleep Monitoring Accurate sleep monitoring facilitating targeted improvement suggestions. 4.Apple Health You can upload your sleep data, including sleep time, fall asleep time, sleep score, sleep cycle, heart rate and breath rate, to Apple Health.

About

Rem

This app automatically tracks your sleep cycles using your Apple Watch, providing detailed analysis of your sleep patterns. It offers insights into sleep quality, disruptions, and heart rate, helping you understand and improve your rest.

Highlights
  • Automatic sleep tracking
  • Sleep pattern analysis
  • Snore detection
  • Sleep score and breakdown
  • Heart rate analysis
  • Smart alarm clock
Features
Read full description

Unlock the secrets of a good night's sleep with Rem, the smart autosleep tracker. With its advanced AI-Machine Learning technology, Rem provides an in-depth analysis of your sleep patterns and helps you understand the impact of your habits and routines on your sleep quality. Get ready to say goodbye to restless nights and hello to sweet dreams with Rem. = Key Features = — Completely Automatic and Easy to use — Sleep Pattern Diagram (Rem stage included) — Snore Detection — Sleep Score — Score Breakdown — Heart Rate Analysis (Dip and Detail Diagram) — Sleep Regularity — Time to Sleep — Trends — Nap Detection — Sleep History — Sleep Assessment — Smart Alarm Clock — Low Battery Usage — Compatible with All Available Apple Watch Versions ============= HOW REM WORKS: • All you need to do is wear your Apple Watch to bed. • An iwatch sleep tracker, facilitates the AI-Machine Learning algorithm to analyze sleep cycle. • Moving more or less than others, Rem adjusts automatically to your personal data • We ignore sleep sessions that are less than 1 hour. To enable snore detection: 1. Connect your iPhone to a power source 2. Tap the "Start Tracking" button 3. Optionally, set a gentle alarm to wake you up. — EASY TO USE — Just wear your Apple watch before bedtime and check your sleep log after you wake up. Your shut eye report is displayed in a clear and understandable way. — SLEEP PATTERN DIAGRAM — Understand your sleep cycles with simple graphs. Discover how to get the restful and restorative sleep you deserve! You can find out the exact times you’ve been disrupted, as well as easily learn the total amount of deep, light, and REM phases. — SNORE Detection — You can identify if snoring is affecting your sleep quality and take necessary actions to improve it. Rem is also equipped with environment sound detection, so you can monitor the ambient noise levels and make adjustments for a more comfortable sleeping environment. — SLEEP SCORE — Your Sleep Score is displayed clearly with a number 0-100 which is an accurate interpretation of your rest quality. — SCORE BREAKDOWN — REM App highlights the most relevant data of your sleep: • Time Asleep • Sleep Details » The total minutes of your deep and REM phases, the most restorative phase of your sleep • Heart Rate » Your heart rate analysis is key for measuring your shut eye quality. You can view your sleeping heart rate graph, your average sleeping heart rate, and the dip percentage of your heart rate during sleep • Disruption • Regularity » REM app records your sleep rhythm automatically and will demonstrate your sleep consistency in a user-friendly diagram. • Time To Sleep • Respiratory Rate » The number of times you breathe in a minute during sleep • Blood Oxygen » The level of blood oxygen during sleep — TRENDS — Follow the impact of your routines on your sleep quality with help of trend diagrams. — SLEEP HISTORY — Monitor your previous sleep diagrams and compare them to your latest data. — NAP DETECTION — REM is an auto nap tracker and will show the nap sessions in a separate field. — SLEEP ASSESSMENT — Learn more about healthy sleep practices by taking the assessment and set yourself up for better sleep. — SMART ALARM — Wake up refreshed and ready for the day. Our smart alarm clock gently eases you out of deep sleep. To use this feature, watchOS 6 or higher is required. — LOW BATTERY USAGE — Don’t worry about draining your battery because it’s low battery usage, even less than your usual usage of Watch. Charge your watch during the day or before sleep. Make sure it has at least a %30 charge. Rem is for anybody who struggles with insomnia or sleep apnea. With the power of its sleep tracking algorithm, you can find accurate and valuable insight about your sleep. Set the smart alarm before bed time and rise refreshed and on-time. It’s a simple-to-use sleep recorder, no need to put it under your pillow. Terms and Privacy Policy: https://bettersleeapapp.com/rem/terms.html

Screenshots

Sleep Central4 screens
Rem4 screens

Verdict

The call

The clearest difference is in-app purchases: Sleep Central at none against Rem's 8. Sleep Central also leads on iOS requirement (7.0 vs 16.0). Rem's advantage is review sentiment (38% vs 6%) and ratings volume (2.7K vs 2). On price, rating, 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. Rem sells 8 in-app purchases, starting at $4.99 per month. Sleep Central asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Rem holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: Rem has 2.7K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 6% of Sleep Central's written reviews are positive against 38% of Rem's.

UpkeepUpdate frequency

Sleep Central ships an update every 5 weeks, Rem every 6 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Sleep Central versus Rem: the parameters behind the verdict, then further details
ParameterSleep CentralRem
PriceFreeFree
Rating4.0 (2 ratings)4.2 (2.7K ratings) — better
Positive reviews6.3% of reviews37.7% of reviews — better
Number of ratings22.7K — better
Update frequencyEvery 5 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS7.0 — better16.0
Further details — not scored
Size51 MB102 MB
Age rating12+12+
DeveloperShenzhen Medica Technology Development Co., Ltd.WELLBEINE TECHNOLOGIES INC

Customer experience

Sleep Central

Written reviews16 reviews
Positive6.3%
Neutral0.0%
Negative93.8%

Rem

All ratings2,725 ratings
Positive78.2%
Neutral6.2%
Negative15.6%
Written reviews334 reviews
Positive37.7%
Neutral12.3%
Negative50.0%

Bugs and requests

Sleep Central

Not enough reviews yet to summarise bugs or requests.

Rem

Reported bugs

3 issues
  • App crashes or freezes
  • Disconnection issues with Apple Watch
  • Lack of customer support responsiveness

Requested features

5 requests
  • Historical sleep data and trends
  • Ability to edit sleep times
  • Improved smart alarm functionality
  • Better integration with Apple Health
  • More customization options

In-app purchases

None

Sleep Central

No in-app purchases

8 purchases

Rem

Subscriptions7
  • Monthly Subscription7 Days trial$4.991 Month
  • 3 Month Subscription7 Days trial$19.493 Months
  • 6 Month Subscription7 Days trial$25.996 Months
Show 4 more
  • Yearly Subscription7 Days trial$29.991 Year
  • Yearly Subscription$29.991 Year
  • Rem Premium7 Days trial$29.991 Year
  • Yearly Subscription7 Days trial$59.991 Year
One-time1
  • Lifetime Subscription$49.99

Questions

Is Sleep Central free?
Sleep Central is free to download, with no in-app purchases.
Is Rem free?
Rem is free to download, with in-app purchases available.
Which has better reviews, Sleep Central or Rem?
Rem is rated higher. Sleep Central averages 4.0 out of 5 from 2 ratings, while Rem averages 4.2 from 2.7K ratings.
Do Sleep Central or Rem have ads?
Neither Sleep Central nor Rem shows ads.
Which is updated more often, Sleep Central or Rem?
Sleep Central ships an update every 5 weeks, and Rem every 6 weeks. Most recently, Sleep Central was updated on November 2, 2026 and Rem on November 3, 2026.

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