# Sleep Cycle Calculator Refresh — user reviews > 50 indexed App Store user reviews of Sleep Cycle Calculator Refresh by DutchVirtual, rated 2.90/5 from 15 ratings. - Source: https://appshunter.io/ios/app/sleep-cycle-calculator-refresh/id606923406/reviews - App overview in markdown: https://appshunter.io/ios/app/sleep-cycle-calculator-refresh/id606923406.md - Rating breakdown: 5★ 6 · 4★ 1 · 3★ 0 · 2★ 2 · 1★ 6 ## Newest reviews (15 of 50) ### 2/5 — Useful but a bug… *2015-06-26, version 3.2.7* When you use the app the first time the times are slightly different in color, so you could recommended sleep time. If switch from Adult to Child you lose that visual presentation. ### 2/5 — No Teens, I Guess... *2015-02-26, version 3.2.3* I switched the app to teenage setting, and now it simply refuses to open. Unusable at its current state. Looked visually apealling from what I saw though. Very clean and modernistic design, nice sleep delay features. Visuals: 5/5 Usability/Function: 1/5 ### 4/5 — Would like to see an update soon *2015-01-19, version 3.2.3* I think this app is great! I really like the way it helps you think in terms of sleep cycles- I would recommend this app, but I would REALLY like to see the bug fixed that causes the app to crash when the user selects an option in the settings > age type menu. That would make the app so much more useful for me! Thanks! ### 3/5 — Very nice but doesn't work. *2014-12-16, version 3.2.3* I don't write a lot of reviews and I know I don't read them, so try to I'll keep it brief. Every time I try to change the age type, it crashes and won't open again to the point where I have to delete the app and download it again just to get it to work. Other than that, it's a great app and I'd love to use it if the crashing were fixed. ### 2/5 — Horrible New interface *2014-11-19, version 3.2.1* The old version was great! I'm about to hit delete when I get done writing this review. Nobody needs a spinning circle with arrows. We need the times in a list like the previous versions, not something confusing as all get out. ### 2/5 — Used to be 5 star app *2014-11-17, version 3.2.1* Newest update removed one of the best and most useful features: a list of possible wake times within a sleep cycle. This feature was perfect for power naps. The new version seems to offer only a 7.5 hour period of sleep. The new interface is also less intuitive. Wish I could reload the previous version. ### 3/5 — Used to like it *2014-11-11, version 3.2.1* I used to use this app everyday, but I don't like the new update. It's confusing and it's not user friendly. ### 2/5 — Loved it.... *2014-11-10, version 3.2.1* I used to love this app, and it was very useful. But for some reason now every time I try to open it, it crashes so I can't use it at all any more 😖 I've tried to delete and reinstall but it didn't work out. ### 2/5 — White bar bug - keeps crashing *2014-10-29, version 3.1.6* This seems like an awesome app, one that can be very useful, but I can't use it! Every time I try to change the time, a white bar pops up at the bottom, and it freezes the app completely. I have tried deleting the app & re-downloading, restarting my iPhone, etc., but it just keeps crashing. It seems that this is a bug that needs to be fixed, I read others are having the same issue w/ white bar as well. Please fix! I would love to use this app and change my review! ### 3/5 — I like it but it keep crashes *2014-10-28, version 3.1.6* I have it on my iPod, and works great, very helpful! But when I downloaded it on my iPhone, when I configured it to my specific age and time for sleep, it crashed and wouldn't work. I exited out of app, restarted phone, and deleted and redownloaded the app, but it still wouldn't work. Please fix, and it will soon jump to a 5 star! ### 3/5 — Bugs!! *2014-10-01, version 3.1.6* Help! This is one of my favorite apps but lately I haven't been able to use it because there is a white bar that comes up every time I try to change the time. This causes the screen to freeze and I am unable to change the time. I miss being able to use the app. Please fix this soon! ### 4/5 — Very cool 😴 *2014-09-22, version 3.1.6* Great app overall! I love the functions of it and that it tells me the optimal time to go to bed/wake up along with other good times. It has ALOT of bugs though. Hopefully there will be an update soon to fix some of these because I do really love the app and using it! ### 2/5 — Crashes! *2014-08-16, version 3.1.5* The app keeps crashing after I changed the age from adult to teenager in the settings. Please fix this! Besides that, this is an amazing app with a beautiful design. ### 3/5 — Love this app... But... *2014-08-08, version 3.1.5* I love this app. It is amazing and helps me get up at 5am every morning but when I try to switch it to child to see what the optimum time to put my children to sleep, it crashes and the only way to fix it is to reinstall it. Please please fix this. Such am axing and very helpful app!! ### 3/5 — Beautiful design, crashes *2014-08-07, version 3.1.5* Crashes when you change the age from adult to teenager, then when you try to open it again it crashes on startup . Only way to fix is to delete and reinstall the app. Please fix this. ## Most critical reviews (10 lowest-rated) ### 1/5 — Not for graveyard workers *2017-12-01, version 3.2.8* I was excited to use this app that could help me get on track of my sleeping schedule, especially working graveyard, but the settings wouldn’t let me make my bedtime at 7:30am. So there was no point on keeping this app. ### 1/5 — Terrible interface *2017-03-24, version 3.2.7* Completely unintuitive and a mess ### 1/5 — Nope *2015-12-18, version 3.2.7* Just deleted this app as it is no longer of use to me. It doesn't calculate the times for me to go to bed or wake up... Just give me some clock thing that is of no use to me what so ever.... Bad choice there to "improve" what wasn't broken!! ### 1/5 — Old version was better *2015-09-29, version 3.2.7* I hate to be the "the old version before the update was better" guy, but the old version before the update was totally better. Now it has a circle thing which you have to rotate and it's just awful. It used to be that you could either enter your wake up time and it would give you your list of times, or you could choose "sleep now" and it would give you your wake-up times if you went to sleep within 15 minutes. Now, if you manage to work the awful circle thing, it just gives you one wake-up time. This app served me well for a long time. Sorry guys, you did the classic "fix it when it wasn't broken" scenario. Oh well, more free space on my phone. ### 1/5 — It was perfect until.. *2015-08-04, version 3.2.7* This app was perfect until he "improved" it. Now, I rarely use it. It was simple and intuitive. Now it I'd difficult and combersome. ### 1/5 — Pls fix white bar *2014-10-08, version 3.1.6* This app is pointless until somebody fixes the white bar that comes up when I try to change the time. ### 1/5 — Force closes *2014-06-29, version 3.1.5* App won't let me change bed times to check various times and it closed and now won't reopen. ### 1/5 — Bug *2014-06-07, version 3.1.4* I paid for the alarm feature- an in-app feature which caused the entire app to stop working. I want my money back!! ### 1/5 — Update *2014-05-17, version 3.1.4* After installing the update, when I open it it freezes and closes immediately. Unusable. Love the original. Help! ### 1/5 — I loved it....at first *2014-05-03, version 3.1.2* I can't even use the app because the second I tap on it, the app crashes and is unusable PLEASE PLEASE PLEASE fix because this is the only app that has what I'm looking for.... ## Most praised reviews (10 highest-rated) ### 5/5 — I love this App *2017-08-26, version 3.2.7* I never wake up grumpy when I use this App. Please fix the sound problem. This App is worth $5 - $25 when working properly. ### 5/5 — Love it *2017-02-16, version 3.2.7* The circular interface is unique and a lot easier to understand than other sleep cycle apps. I really like seeing the sleep cycles visually instead of a list of numbers and times. It works great for me and I wouldn't want to change anything about it. ### 5/5 — Unique, analog display interface *2015-12-31, version 3.2.7* It's like an analog watch vs. digital display, and can quickly at-a-glance see all the different wake times. When I usually use the app, I am half-asleep, so I don't need anything overly complicated to interpret, and don't want to have to input something then hit next to go to a different screen. I like how you can just rotate the dial to adjust, and the dial has graded colors showing times less than the recommended nine hours sleep as a darker color, and all the different times are right there on the same screen. This app is nice where everything is right there, which makes it simple and easy to use, in my opinion. I started using this after the 2014 update, and really like it. There are a ton of other apps if people want the same old thing, but this is has a really unique, easy on the eyes and aesthetically pleasing interface. ### 5/5 — Necessary *2014-10-16, version 3.1.6* I can't sleep without calculating sleep cycles anymore. I've been using this for probably a year + Ia simple and practical. I don't like the ones with all the features. ### 5/5 — Help!!!! *2014-09-25, version 3.1.6* I love this app so much but i can't change the time I want to wake up 😫😫 help me pleaseeeee. I deleted it three times and it still won't work. THIS APP IS AMAZING!! ### 5/5 — Very cool app! *2014-09-10, version 3.1.6* This app helps you figure out how much sleep you should have. I find it very useful and I like the way it gives you several times you could get up, but shows the optimal time as well. Also like the look of it and its themes. Very cool app. ### 5/5 — Great app *2014-07-23, version 3.1.5* Works like a charm! Best app I've ever downloaded! Helps the most with sleeping patterns and after a while you wake up a few minutes before your alarm goes off even! Great app 👍 ### 5/5 — Used Over A Year *2014-06-13, version 3.1.4* And it's great! I'm a university student and it helps me get up with good energy. Simple and awesome :) ### 5/5 — Great! *2014-06-04, version 3.1.4* Get this app! It works better than advertised. ### 5/5 — Works brilliantly--and no ads! *2014-05-10, version 3.1.3* As a college student, I have a messy sleep schedule--this app helps keep my sleep cycles on track ! --- *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 2026-06-10.*