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Sleep Time : Sleep Cycle Smart Alarm Clock Tracker, Insights Analysis, Better Soundscape

By Azumio Inc.

Open iTunes to buy and download apps.


Fall asleep, stay asleep, and wake up refreshed!

Sleep Time doubles as a comprehensive sleep analysis app and alarm clock. Celebrating the release of version 2.21, Sleep Time is the first sleep app with iOS 8 support and Apple Health integration!

With over 35 million users, the award-winning Sleep Time app is all over the web.


“Azumio has fulfilled the need for an accurate, state-of-the-art algorithm for sleep analysis that is consumer-accessible as an integral part of a complete mobile health solution” - Dr. Paul Zei, Stanford University

5/5 “I’ve tried several apps that log the amount of sleep and the types you experience, and the interface of Sleep Time is the best by far. It’s easy to understand and simple to use.”

5/5 “Fascinating results. It works remarkably well providing helpful information.”

Featured on: TechCrunch, Mashable, Lifehacker, 148apps, eHealth, and many others...

#1 Sleep Analysis app in United States
#1 Sleep Analysis app in Japan
#1 Sleep Analysis app in United Kingdom
#1 Sleep Analysis app in Australia
#1 Sleep Analysis app in Germany
#1 Sleep Analysis app in France
#1 Sleep Analysis app in China
#1 Sleep Analysis app in Russia
#1 Sleep Analysis app in Canada
… and many more.



√ Set the alarm clock with a single gesture

√ Fall asleep to soundscapes or white noise!

√ Alarm rings even in silent mode

√ Choose from any of our 20 built in alarms

√ OR wake up to your favorite song from iTunes!

√ Sleep Lab™ with sleep cycle analysis

√ Detailed monthly and weekly graphs

√ Advanced wake-up optimization algorithm

√ Instant Heart Rate integration to detect pulse after waking up

√ Full history and graphs make comparison easy

√ Backup and restore your sleep data on the cloud

√ No glasses needed for our easy to read interface!

√ Apple Health Integration

We make Sleep Time for our users and we’d love to hear your feedback – tell us what you think so we can implement your ideas and suggestions in the next update!

Upgrade to Premium to receive unlimited access to Premium Programs and Playpen Freeplay workouts, HD videos, dynamic and motivational audio, workout email summaries with tips and advice on healthy living, priority support, and more for $8.99/month or $39.99/year through renewable iTunes subscription.

Sweet Dreams,
Azumio Team

What's New in Version 5.28

- Set custom sleep reminders in Settings so you never miss a night of sleep tracking
- Under the hood improvements and bug fixes

If you enjoy using Sleep Time and feel that it has improved your sleep quality, please write us a positive on iTunes. If you have any other questions/concerns, please feel free to reach out to us at

iPhone Screenshots

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Customer Reviews

Used it for over a year now

I really love this app. I have the free version, but I don't really miss the pro features. I still set a backup alarm, but I've always done that no matter what primary alarm I used. It automatically turns the volume on your phone all the way up, and even if your phone is on silent, it will go off at full volume in the morning. This is great, because there have been times with other apps when I'll accidentally leave my phone on vibrate so the alarm won't go off in the morning. It also doesn't use that much battery, so I don't have to plug it in at night. If I charge to at least 70% before I go to bed, the battery life lasts me all night and through the next day. I cannot speak for the accuracy of the program, I just like that it monitors how often I sleep and wakes me up more gently. I really like it, and would recommend it!

Love it, but...,

I was an early adopter. I loved sleep time. Then I started getting ads. Then I started getting 'upgrade and pay for it or we'll make your life miserable "every time I open. I started getting rate us. I started getting a lot of other crap besides the basic program. And they changed the way the sleep program looked. I've gotten used to that but I don't like it as well as I like the original. I really love this program. I think it's a great program. But I don't like being blackmailed into buying something I don't want. If you said to me give us five bucks for the rest of your life and we'll give you the basic program you had in the beginning I would buy it in a minute and then you would leave me alone but as it is I get frustrated every time I use this program especially when you keep asking me to rate it so now I have--leave me alone!!!

Had it for years, used to be better...

In short -It's a nice idea and is kinda fun to have. BUT I wouldn't recommend use as a main alarm (or main health tracking device if you need reliable data).

Lots of updates. But the app can get pretty glitchy with not allowing alarm time to adjust, which obviously is important if you want to wake up on time. The sleep tracker isn't super accurate, but it's decent if you want to know just how many hours you were out...which is legitimately the only reason I've kept it this long.
The heart rate monitor has never shown mine accurately. The app also has a lot of extra health content that you don't have access to unless you buy premium or another of their developer's app. Takes up quite a bit of space especially once you start logging some days of sleep.

Sleep Time : Sleep Cycle Smart Alarm Clock Tracker, Insights Analysis, Better Soundscape
View in iTunes
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 5.28
  • Size: 145 MB
  • Languages: English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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