Sleep Time: Cycle Alarm Timer 4+

Dream, Bedtime, & Nap Tracker

Azumio Inc.

    • 4.7 • 920 Ratings
    • Free
    • Offers In-App Purchases

iPhone Screenshots


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 $9.99/month or $29.99/year through renewable iTunes subscription.

We offer auto-renewable subscriptions with the following specifications:
- Payment will be charged to your iTunes account at confirmation of purchase
- Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
- No cancellation of the current subscription is allowed during active subscription period
- Any unused portion of a free trial period, if offered, will be forfeited when the user purchased a subcription to that publication
- Our privacy policy and terms of use:

Please note: Continuous use of GPS activities in the background can dramatically decrease battery life.

Sweet Dreams,
Azumio Team

What’s New

Version 5.168

- bug fixes

Ratings and Reviews

4.7 out of 5
920 Ratings

920 Ratings

julseywulsey ,

Love it!

As someone who has insomnia, this app is a godsend as I can see exactly what time I go to bed, how deep the sleep is, how long I sleep, and can work out what works. If I have too much computer time and not sleep or if I have some alcohol and not sleep I can tag it and keep a record of which habits to alter. Love it ! Now I do wish I could afford to buy the full app, as I only have access to the fresh waves oceans sound which does work but gets tiring after a while.

Cgd ,

nice alarm - but cumbersome 'additions'

This app has an excellent alarm system. After (optionally) lulling you to sleep with waves sounds it provided a gentle but increasingly insistent wake-up alarm.

The downside is that the app comes with vast amounts of baggage -- that is unless you are keep-fit obsessive in a digitised way and buy into (unproven) science behind its main thrust, the idea that it can fairly precisely monitor the quality, depth and type of sleep. It all looks very impressive, at least until you read the academic reports in the medical press on the claimed technology, which it seems is not very accurate at all. Add to this the constant ads that must be closed (sometimes with difficulty, with a minute closure mark) and that it drains a lot of battery, and it soon can start to look rather less wonderful.

A free 'light' version that had less bug screens and used less space and power would create a more favourable impression on many who do not buy right into the company's lifestyle version.

C3PO's brother ,

Works well but...

This app works well. It provides a very efficient alarm call in the morning and during the course of the night illuminates automatically when the phone is turned over, rather handy.

Unfortunately it has too many negatives to make it great. Most irritating is the ads on the screen. The red delete crosses to get rid of the ads do not work! Very frustrating! Also, how many times do you want to prompt me to buy premium!? I’ve already indicated NO, stop asking.

On an upside if you like digitalisation of your sleep, health and fitness and basically your life, then this is the app for you. I agree with one of the other reviews in that a basic/lighter version of this app would work very well for those that just need an alarm clock. Please consider.

App Privacy

The developer, Azumio Inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


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