# Sleepzy - Sleep Cycle Tracker — user reviews > 446 indexed App Store user reviews of Sleepzy by Mosaic S.r.l., rated 4.30/5 from 22,380 ratings. - Source: https://appshunter.io/ios/app/sleepzy-sleep-cycle-tracker/id1064910141/reviews - App overview in markdown: https://appshunter.io/ios/app/sleepzy-sleep-cycle-tracker/id1064910141.md - Rating breakdown: 5★ 15,431 · 4★ 2,847 · 3★ 1,483 · 2★ 778 · 1★ 1,841 ## What do users think of Sleepzy? Overall sentiment: neutral **Pros** - 🚀 Effective alarm clock - 👍 Customizable alarm sounds - 🌙 Sleep tracking features - 💤 Gradual wake-up process **Cons** - 🐛 Inaccurate sleep tracking - 🔋 Drains phone battery - 🔒 Privacy concerns with microphone - 💰 Overly aggressive upselling of premium features **Commonly reported bugs** - Alarm not going off as scheduled - App crashing or freezing - Inconsistent data recording **Most requested features** - Integration with other sleep/health apps - More detailed sleep analysis and insights - Ability to adjust alarm time range - Nap tracking and alarm ## Newest reviews (15 of 446) ### 2/5 — Problems *2026-07-28, version 3.46.13* Been having a lot of problems with the app lately, not quite sure what the heck is going on. Can’t seem to get the tracker to open anymore. ### 3/5 — Decent, But Nothing Special *2026-07-10, version 3.46.13* The app does the basics well and is easy enough to use, but it didn't really stand out to me. The interface is okay, and the sleep tracking seems decent, but I was expecting a few more useful features and a smoother overall experience. It's not a bad app, just fairly average compared to other sleep trackers. ### 2/5 — Great, when it works *2026-06-07, version 3.46.13* I’ve now used this app for a few months, usually stops working for about 3 days. Then suddenly it works again. I reboot my phone, I clear the ram, I’m a geek so I do all the necessary things. But yet, it still fails 3 days out of a 4 day work week. Considering it’s an app that I have PAID for, it is quite annoying that it only works part time, even after updating it, uninstalling it, reinstalling it. I have the latest IOS device and software, so I don’t know what else to do besides throw my phone at the wall now ### 2/5 — No way to swap it for day sleepers *2026-05-12, version 3.46.13* It’s only set up for people who sleep during the nighttime there’s no night shift settings but could be cool ### 2/5 — loved it until.. *2026-04-13, version 3.46.13* loved it until its stopped working a couple months ago? was my go to alarm app and loved how it worked. but now everytime I try to set an alarm the app immediately shuts down and closes out. figured it was a bug but I keep checking for updates and nothing is coming:( ### 4/5 — Good and bad *2025-12-07, version 3.46.13* Really good but recently been bugging, so it’s kinda hard to use ### 2/5 — Didn’t measure my sleep *2025-09-17, version 3.46.13* Only one out of the six nights that I tried it did it actually fully capture all of my sleep despite the fact that all of my other apps were capturing my sleep successful. No clear help instructions on this. So it’s a thumb down for me. ### 2/5 — Buggy *2025-08-31, version 3.46.13* I have the paid version and every now and then it brings up a screen when opened that I can’t X out of no matter how hard I try. Hard to get consistent data when I can’t even open the app consistently. ### 3/5 — エラー *2025-08-23* なんか使えてたのに急に開いたら画面が暗くなってずっと歯車がクルクルしててホーム画面に落とされるようになった ### 2/5 — Meh.. *2025-08-07, version 3.46.13* I used it for about 4 nights. The sleep debt is cool and all and the sleep sounds are nice. My problem is that most of the time it showed “awake” as the majority, but there was no info on how to fix it. I am a person that moves around A LOT when sleeping so it makes sense but it didn’t make my sleep any better. It only tracked it. ### 2/5 — freezing *2025-07-27, version 3.46.13* was great until the app basically broke whenever it asked me to try the paid versions. there’s an X button you can’t click and clicking the free trial just freezes the app ### 3/5 — Sort out your crashing issues! *2025-07-15, version 3.46.13* It’s fine when it works but the amount of times you open the app up and it crashes so you have to delete the app and reload it, and then they ask me to pay between £18-36 a year for the privilege! I don’t think so. Finally had enough and deleted for good. ### 3/5 — The theory *2025-06-26, version 3.46.13* It is in theory a great app but when I went to summary it said that I need to set a alarm but I already did and every time I go into the app it gives me a ad to get premium and I like just having the free version so if y’all could fix these things that would be most appreciated. Thanks. ### 2/5 — Not working *2025-06-08, version 3.46.13* Was working perfectly, today I subscribed for a year (i am still on a free trial) and went to open it just now and it has been stuck loading for 10mins. I have restarted my phone, refreshed the app. I can’t uninstall and reinstall cause I’ll lose my money ### 1/5 — It doesn’t work *2025-05-18, version 3.46.13* The logo froze in the page and i cant do anything ## Most critical reviews (10 lowest-rated) ### 1/5 — Stay away *2026-08-06, version 3.46.13* They say they have a free version, but you have to give them your credit card for a “free trial that starts charging you. That is a scam. ### 1/5 — Unfortunately bad now *2026-04-14, version 3.46.13* I’ve had this app for many years and even when I switched to other apps I’d come back to this one. The freezing now is unbearable I shouldn’t have to keep a backup app in case this one doesn’t load. Today, the alarm just didn’t go off; it’s happened before but I really needed to be up early to have my day set up properly, so this was my last straw ### 1/5 — Another mediocre app *2026-03-24, version 3.46.13* Another mediocre app trying to force me to buy my data! ### 1/5 — Terrible *2025-12-07, version 3.46.13* Freezing up all the time DO NOT GET ### 1/5 — Inaccurate *2025-10-21, version 3.46.13* Not accurate at ALL to my sleep. Worked well the first day, then for the next several it showed me as being awake for hours and then like registered ten minutes of sleep at the end. Not how it went down. ### 1/5 — Worst app ever *2025-09-28, version 3.46.13* They won’t let me stop my subscription and I have been trying for days now… ### 1/5 — Keeps closing *2025-09-07, version 3.46.13* When I try to set my wake up time range, it keeps forcing shut. Can’t even set up to try without force closing/crashing ### 1/5 — Couldn’t get it to even open with service ! *2025-07-27, version 3.46.13* Can’t open an use app ### 1/5 — Not exactly free *2025-07-20, version 3.46.13* The app just expects you to subscribe for pro version. Apparently, you can’t use the free version unless you subscribe. ### 1/5 — App is a scam *2025-05-21, version 3.46.13* Do not download this whack app ## Most praised reviews (10 highest-rated) ### 5/5 — Wow *2026-04-06, version 3.46.13* Excellent!! Everything you need!!! ### 5/5 — My time to sleep help me father *2026-03-01, version 3.46.13* 10 across the board ### 5/5 — AMAZING *2026-01-14, version 3.46.13* I’m sorry why are there so many one star reviews? This app is amazing, or maybe it wasn’t amazing but not it is idk. LOVELY AMAZING SO GOOD except idk where to change my age I searched it up and idk it’s just not working 🤷‍♀️ ### 5/5 — Amazing *2025-08-06, version 3.46.13* This app very good. I love it. I’ve been using it for almost 3 freaking years and I love it. My entire family used to sit and I think you get it too. ### 5/5 — The best day fixer *2025-06-03, version 3.46.13* I used to have this really bad attitude and I always got in trouble for it so I downloaded this app and it’s helped me know how long I should sleep and how long I shouldn’t sleep and it’s been helping with my attitude a lot lately. I haven’t gotten in trouble for a very long time. Download this app and see if you feel the same. It was great for me. ### 5/5 — Me *2025-03-10, version 3.46.12* Idk ### 5/5 — Very very good app for free *2024-11-21, version 3.46.9* I am a very big snorer but I didn’t believe it so I took it with me one night but my phone was rattling because I was snoring so loud. Now I can understand why my friends hate sleeping next to me ### 5/5 — 想说一下扣费的问题 *2024-11-19* 朋友们那个选项试用选项左上角有个叉是能点掉的，不是说一进去就扣你们的钱…至少我现在的钱一分没少。你不按指纹不刷脸没人能扣的了你的钱… ### 5/5 — Dream radio *2024-07-10, version 3.46.3* I’m about to get ready to set it up ### 5/5 — Sleep *2024-02-06, version 3.46.1* I want this app please --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*