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

By Azumio Inc.

This app is only available on the App Store for iOS devices.


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

Tracking & Awareness = Great Tools for Changes

Forget the other apps and go straight to ARGUS! I've tried them all & this app has changed my life and given me the tools to create a personal sleep hygiene. I've been dealing with chronic illnesses for several years now, prescription meds make it difficult to rest and antibiotics have terrible side effects. I've tried several sleep tracking apps & I love ARGUS because it integrates with other apps I use. I like the layout & the feedback. I set it immediately when I get in bed and like to know WHEN I get in bed, and I love the tags I can customize before each night's rest.

Because of this app I've realized I have a "sweet spot" for sleep and it's 6 1/2 hours. I also have figured out that this only applies to my quality sleep when I go to bed before 11pm. If I sleep longer I'm not necessarily more rested - it's usually a flag for an infection. I have a chronic illness so this is incredibly useful data to me so I use it pretty religiously.

I love that it integrates with my other ARGUS programs, and prompting me to take my heart rate upon rising is a wonderful bonus tracker.

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!

Continuing to downgrade due to ad nonsense

2017: Compelled to update bc this has gotten worse due to the bait and switch ad tactics. Good luck getting to the main screen to set this. If you are willing to launch and app, click through 2-3 screens AND then figure out how to extract yourself from the never ending ad campaign with no escape good luck.
Good app function if you can get to it. Incredibly poor user interaction snd monetization. Go find something, anything else. The shenanigans are not worth it. Your standard alarm on your phone is enough to wake you up. Any other sleep app that 'measures' sleep stages has the be less of a hassle than this.

Too bad they can't figure it out.

2016: The functions of this app are good but the last update has made it ridiculous to set.

I was considering purchasing the premium version for the storage but not after the last update. Now they want you to log in or buy the premium version. If you can locate the button to skip this process among the clutter them you get served up a completely irrelevant ad. You then have to wait for the ad to finish (which it sometimes never does) to click out of it. If you can't click out and attempt to close the app and reopen it it usually crashes at least once before you can attempt the whole process again.

I've been using the app for a year but am looking for a new one because of the nonsense. There are other sleep app options with less in your face unrelated advertising and no ridiculous logins.

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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