Sleepzy - Sleep Cycle Tracker

• Exercise Breathing & Meditate — $6.99

Last verified 4 Sep 2026

4.3 22379 ratings · App Store

1. 2/5Data doesn't work

   If someone sleeps well they will think this app works great, but for those who don't, we notice this app just always assumes you're sleeping. I put the phone open right next to my pillow and the test window says it's a perfect place to put it. As soon as I put my phone down it says I'm asleep. It takes at least 30 mins for me to fall asleep once I'm actually settled with my eyes closed. I also wake up multiple times during the night, sometimes getting out of bed for the restroom, none of which it records. So when I get up in the morning (awake before the alarm goes off with it saying I was sleeping-still inaccurate), I'm dead exhausted and haven't slept much but the app says I got as much sleep in as the time it was on. If this app actually worked like it says it does it would be super cool. Maybe work on how to make it responsive to people, and always make it know if you pick up your phone you're pretty much awake. And teach it how to know when someone hops out of bed. Then the app would be good. I rate for content, not concept. Content doesn't work no matter how cool the concept is.

   Lissibelle · 4 Sep 2026

2. 5/5This all is so cool and useful

   I really love this app. I saw some other reviews saying it has a lot of ads or that it thinks as soon as they set the phone down they're asleep... I haven't had that problem at ALL. I don't think I've seen any ads (or so little that I forgot them) and it shows I'm awake for a while before I actually fall asleep. That could just be because I move a LOT when going to sleep; but either way it's perfect for me. It's also really interesting to see the sleep analysis, I don't know how accurate it is but it seems to be pretty true... and it's really cool to see. And it reminds you how much sleep debt you need to catch up on which is ALSO cool, plus the wake up within a half hour of when you need to be up is nice, as it can pick when you are in the lightest sleep and ready to be woken up. My only issue is that I have to remember to unplug my headphones or else it'll just play in them (I usually listen to music before bed, and often I fall asleep and they fall out of my ears) but thats a small price to pay for a great alarm clock!

   NOT RELAXED. ANXIOUS · 4 Sep 2026

3. 4/5Very useful but buggy

   This app is great. You set a time to wake up and it will wake you up sometime up to 30 minutes before your set time to try and use what it collects through the night and what we already know about the human sleep cycle to wake you up at the perfect timing for where you are in your current cycle. The issues with this app is sometimes I feel as though the app doesn’t know when to really wake you up because it doesn’t get enough information accurately about your sleep. But in its favor it’s noninvasive (you don’t need it in bed with you) The bugs are just annoying more then a hindrance. Sometimes it’s only buggy when your trying to do something that would be weird like setting your alarm to activate the application for the night while on the phone talking to someone still crashes the app. If you are in the app while on the phone and try to start the alarm for the night after getting off the phone the app will either crash, freeze, or just not respond to the start button. You have to restart it and usually it will work. I get ads even though I’m premium. But rarely and seem to be short ads. When you get a phone call while the alarm is activated if you don’t play or even just have the background noise paused it’ll start playing it when when the call stops. Hopefully the developers can squash these bugs since they been around for a little bit. Happy sleeping sleepzyers!

   Shawnx12240 · 4 Sep 2026

4. 1/5Sleepzy Review

   First of all, let me preface this by saying that I did not even want to buy this app. I got the one-week trial just to see what it was about, did not really use it at all because let’s be honest I just was busy. Anyway after one week the trial ended and I forgot to unsubscribe therefore it charged me for the full year of $40. I decided to give it a try, and soon realize that this app is not very good. I don’t think that it is accurate my heart rate has never dipped down below 60 and it said that my resting heart rate was 40 bpm. I also was not sleeping at the time and when I checked the data it said that my sleep was 86% average and it showed that I actually hit REM sleep, but that is not possible because I was wide awake. This app is not accurate and I don’t think it should be falsely advertised the way it is. Since I did not want this app, I decided to send a message and ask for a refund, to my disappointment I was instantly denied my refund. I don’t think that it is fair, because as a customer I should have the right to get my money back for a product I am not satisfied with.

   Thatchickk23 · 4 Sep 2026

5. 5/5Great app! Just a few suggestions

   I really love this app! It’s better than sleep cycle, because the UI is much more efficient and the visuals with the sleep quality help you understand the data more clearly. The data seems to be accurate as well. To people using the app, please use the accelerometer to track rather than the microphone if you want your notifications to come through. I need to use another app to wake me up before sunrise every night. I’ve searched for a long time for an app that allowed me to do that. And I found this one! So thank you!! 👍🏼 Just a few suggestions: First it would be nice if you could have an option to communicate with Apple health to write data about sleep analysis. Second, please also provide an option to put the data together from 2 different sleep sessions from the same night, in case you accidentally close the app, or get up in the middle of the night. That is all, thank you!

   Lily28s · 4 Sep 2026

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