Reviews of Sleep Cycle: Sleep Tracker

By: Sleep Cycle AB App

List of user reviews and ratings for Sleep Cycle: Sleep Tracker

Total ratings

4.34 (Rating count: 217,633)

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Review summary

Users praise the app for solid sleep tracking and an effective smart alarm when accessible, and note its long-running reliability. However, widespread paywalls locking core features, intrusive ads, and occasional tracking inaccuracies drive dissatisfaction and uninstallations.

Pros

Good sleep tracking accuracy and a neat sleep tracker
Smart alarm can wake you up smoothly and effectively when the feature is accessible
Longstanding app with many users using it for years (over a decade)

Cons

Smart alarm and other core features are locked behind a paid subscription/paywall, causing dissatisfaction and uninstallations
Intrusive ads and notification ads, especially affecting free users
Inconsistent sleep tracking accuracy (misreads wake times or time to fall asleep)
Recent updates reduced free functionality (e.g., removing wake windows) leading to frustration

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User Reviews

Recent rating average: 2.70

All time rating average: 4.34

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39% (131)

Date	Author	Comment
2026-08-28	Al*****	this thing records me 24h ... just found out all my conversations are recorded even during the day.
this thing records me 24h ... just found out all my conversations are recorded even during the day.
2026-08-28	Ni*****	it is a good app. the only thing is that it doesn't see if you are still asleep even after your alarm goes off to wake you up. I have had it a few times now where I wake up from the alarm, turn it off and go back to sleep. it doesn't spot i am still sleeping therefore doesn't track it through my watch. if a feature could be added where it can tell through your watch if you are asleep or not would be super useful. I have also had it where I forget to turn the alarm on before bed.
it is a good app. the only thing is that it doesn't see if you are still asleep even after your alarm goes off to wake you up. I have had it a few times now where I wake up from the alarm, turn it off and go back to sleep. it doesn't spot i am still sleeping therefore doesn't track it through my watch. if a feature could be added where it can tell through your watch if you are asleep or not would be super useful. I have also had it where I forget to turn the alarm on before bed.
2026-08-26	Da*****	THIS APP MAKES YOU UPGRADE JUST TO HAVE ACCESS TO THE RECORDINGS WHILE YOUR SLEEPING. SHOULD BE ILLEGAL
THIS APP MAKES YOU UPGRADE JUST TO HAVE ACCESS TO THE RECORDINGS WHILE YOUR SLEEPING. SHOULD BE ILLEGAL
2026-08-24	*****	it should be free, DELETE
it should be free, DELETE
2026-08-24	Ka*****	love this app, but I have animals, and when my dogs bark, it takes it as talking. 😅
love this app, but I have animals, and when my dogs bark, it takes it as talking. 😅
2026-08-23	Ji*****	nice indicaror in sleep, but sometimes it is way off.
nice indicaror in sleep, but sometimes it is way off.
2026-08-22	Cr*****	trash
trash
2026-08-22	Ta*****	I've been using this app for years and find it very helpful. I recently noticed that one of the app features, alertness test, recently disappeared. I used that feature daily so I hope it returns soon.
I've been using this app for years and find it very helpful. I recently noticed that one of the app features, alertness test, recently disappeared. I used that feature daily so I hope it returns soon.
2026-08-22	Cl*****	Been using this for years. Suddenly in the last couple of weeks, the sleep hours count has gone from generally too high to way too low. It must have autoupdated? I cleared cache and data, no change, reinstalled, no change. Have now updated to 4.26.32 and we'll see. I've had none of the problems others have. Tracks my sleep and nighttime awakenings very well. I always leave the phone on charge, and where I put it points the mic directly at me. Always set a 2nd alarm if it's critical.
Been using this for years. Suddenly in the last couple of weeks, the sleep hours count has gone from generally too high to way too low. It must have autoupdated? I cleared cache and data, no change, reinstalled, no change. Have now updated to 4.26.32 and we'll see. I've had none of the problems others have. Tracks my sleep and nighttime awakenings very well. I always leave the phone on charge, and where I put it points the mic directly at me. Always set a 2nd alarm if it's critical.
2026-08-21	An*****	stopped recording snores and coughs
stopped recording snores and coughs