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Sleep Tracker

PrimeNap is a sleep tracker and sleep cycle alarm clock with many features for you to graph your sleep patterns and wake up at the perfect time feeling refreshed.
Features:✔ Free sleep tracker (graphs all sleep stage estimates: Awake, REM, N1, N2, N3 deep sleep)✔ Sleep cycle alarm clock with up to 40 parameters (small in-app purchase, can be tested for 2 weeks)✔ Multitouch snooze (5 minutes per finger)✔ Cinema/Night mode screen dimmer with optional red filter✔ Dream journal with custom dream sign recognition✔ Sleep stats for user-specified daily activities✔ Sleep sounds that stop automatically once the app thinks you have fallen asleep. Choose your own music or from a range of included sounds.

Alarm components☆ 1st component: Wake-up light
- any custom image or screen color☆ 2nd component: Nature sound
- here you can choose from a range of included sounds☆ 3rd component: Ringtone
- your custom mp3 music file☆ 4th component: Vibration
- a configurable pattern of vibration pulses

Included sleep sounds☆ Air-conditioning☆ Crickets☆ Fireplace☆ Fishtank☆ Rainstorm Indoors☆ Seashore☆ Train Travel☆ Water Flowing☆ and many more sounds that will guide you to sleep

Benefits of using a sleep tracker and sleep cycle alarm clockWith modern day work schedules, our sleep patterns have become widely irregular and oftentimes much shorter than they should be. PrimeNap Sleep Tracker can help you analyze your sleeping patterns and correct them if necessary. Using PrimeNap's smart alarm functionality, you can avoid being pulled out of deep sleep by a well-meaning time-based alarm clock, and instead wake up gently after sleep cycle completion and thereby simulate a natural awakening.

How it works: Movement during sleep is known to roughly correlate with the actual sleep stages obtained by polysomniography. This sleep movement is registered by the phone and translated into fairly accurate sleep cycle information.

Recommended use: Use this sleep app with proper hardware. If convenient, switch on airplane/flight mode to minimize any emissions. Reboot or close other apps that might cause the phone to heat up during the night.

Category : Health & Fitness

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Reviews (20)

Ana. C. May 27, 2019     

This app has the best features compared to others but the user interface is really bad and hard to navigate. It is confusing to use and the dates and day of week don't match most of the time I wanted to purchase the premium version but there is no information on what that entails. If the developer has UX assistance it could become the best in the market.

S. W. Feb 14, 2019     

Love it cause i includes more accurate sleep cycles than other apps, and has more features without the high cost. Definitely my 1st choice. would love it more if: 1. had the ability to log own sleep when missed a log 2. the UI was more intuitive - the stats are in a tiny font and that space could be utilised more efficiently 3. setting the alarm is currently tedious, way too many options, please place all options on one screen and not on 'next' format.

Lee. M. Oct 30, 2018     

I think Sleep as Android is better. Tried this for a few nights but the results are really wonky. Last night I couldn't fall asleep at all for over an hour then woke up probably 6 times as I was worrying over a doctor's appointment and had injured my toe so it was really painful. The app shows I slept 9 hours and was asleep 8 hours 20 minutes of that! Which isn't even close. It also doesn't show me ever getting up in the night. So don't think I'll be using this one anymore.

Mir. R. Jun 20, 2020     

I set an alarm for 7am and it went off this morning and I couldn't turn it off.. I had to actually restart my phone because no matter what I did the alarm wouldn't shutup. I pulled the app back up to try and look at my sleep hours.. I couldn't figure out how to see a detailed analysis. It just said I slept for x amount of hours. I got frustrated and uninstalled it. When designing an app someone will be using immediately upon waking up, it needs to be straightforward. This is not.

Chr. D. Sep 28, 2019     

A decent combination alarm and tracker, but the UI forces you to choose a "wake up" light, which I don't even want. Tracker screen is cluttered with bizarre month/day representation. With a little cleanup, though, and more standard Android widgets this could replace Sleep for Android on my phone.

Wil. T. Jan 11, 2019     

i wouldve rated 4 stars if it continued working as well as when i first downloaded it. the app itself is fantastic but for some reason recently it keeps switching itself off while i am asleep and therefore only records a small segment of the begining of the night, which defeats the purpose. i have no idea whats wrong with it ive been checking it while awake every now and again to see if its on but as soon as i fall asleep it seems to turn itself off

Ste. E. Dec 6, 2019     

I've dropped my rating to one star as this app niw will not work without my paying for it. I'm uninsralling and starting my search again for a decent, FREE tracker! like this app so much more than the other three sleep-tracking apps I've tried! The only thing I'd say needs improved is the font: hard to see first thing in the morning, especially without my glasses. It needs to be larger and bolder,

A. G. u. Oct 27, 2018     

Didn't like this app. Couldn't find or figure out anything. For example, activity icons don't show up (only able to view about 10 of them scattered across page) or explain what they're meant to be. Can't go back to view old dream logs.

A.. S. Jul 22, 2019     

the graphs are neat as long as they actually get saved. It happened more than once that I had a graph for the whole night, then I went to sleep again and it randomly deleted the last graph and only recorded for 3 minutes. It also woke me up in the middle of my dreams a few times(the other times I woke up by myself) .

Pet. A. Oct 11, 2021     

A surprisingly good app digged down the Google play and I would not know about it if it wasn't mentioned in a you tube video. Free and fully functional with more useful info than other apps. Old and not updated for a long time but good that is another reason why surprising. Owner also does not respond to review.

Kyl. B. Oct 13, 2018     

App keeps shutting down after getting like 5 min of my sleep in. I tried a few days in a row, not sure what's wrong. Obviously I can't remember open the app while I'm sleeping so I never know when it actually turns off. If anyone can help figure this out I'll change my rating. Thanks

A. G. u. Dec 27, 2018     

Love the app, just wish the tutorial was a bit more in-depth. I'm still having trouble understanding what several buttons do, even after going through the tutorial a second time.

Don. Z. Jul 8, 2019     

Love this app! It's accurate and reliable, the only problem is it has an unappealing interface. A lot of small things with no explanation and the userface itself is a little clunky. But despite that I love it!

lau. B. Oct 17, 2018     

Using this app at first I thought it worked really well, then it didn't record anything for a few days even after activating the sleep mode. Also doesn't pick up if I'm asleep or not very well, I've had times where I set it and it's said I'm in a deep sleep even though I'm up awake and unable to sleep.

Eff. Nov 30, 2019     

After using the basic free app for 4 months... They've now changed the sleep tracker to a 2 week free trial leaving me with no tracker with no warning. BS. Not gonna pay for it, it isn't good enough to pay for and don't appreciate the sudden change.

Mak. B. B. D. Dec 12, 2019     

Really good app i wish there was already daily activities you could select such as ( smoking, drinking, caffeine and others), i would also like to see if you could set the sleep music to play longer or for all night. Other than that its a great app.

Adr. M. Mar 1, 2020     

Really like the app. Keeps an average of hrs slept over last 30 days. Good bar and graph charts. Time to go to bed alarm, plus many other excellent features. One of the best sleep analysis apps I have used.

Sab. P. May 30, 2019     

it has good potential. unfortuately, it seems to not record reliably. trying to find a manual input is not intuitive, its there somewhere, but have to go looking for it.

Ste. C. May 29, 2021     

This is unequivocally the worst software I've ever installed on my phone. Garbage app. I've tried using it 4 nights in a row. The longest it worked was for 6 minutes on the 2nd night. There is zero explanation of how it works, zero indication of whether it's working or not, zero feedback on what you did wrong. Don't waste your time with this joke 'software'. Maybe they created it to ruin people's sleep. I really have nothing positive to say on this.

Myl. U. May 3, 2020     

I tried this app for 2 nights as a general sleep tracker and both nights it randomly started playing music even through I didn't set an alarm. The ads are also really intrusive and interrupt you while changing screens.