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Sleep Cycle alarm clock

By Northcube AB


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Waking up made easy.

An intelligent alarm clock that analyzes your sleep and wakes you in the lightest sleep phase – the natural way to wake up feeling rested and relaxed.

Sleep Cycle helps millions of people to wake up rested.

Featured in: CNN, Wired, The Guardian, The Wall Street Journal, BBC, The New York Times.

#1 Top Paid app in United States
#1 Top Paid app in United Kingdom
#1 Top Paid app in Japan
#1 Top Paid app in Germany
#1 Top Paid app in France
...and more.

"It just works. Period. It does exactly what it advertises which is absolutely amazing."
--5/5 stars on

Sleep cycle is continuously rated as the best smart alarm clock and is the world’s most used intelligent alarm clock.


* Our patented technology monitors your sleep movements using sound or vibration analysis.

* Sleep Cycle then finds the optimal time to wake you up during a 30 minute window that ends at your set alarm time.

* Recommended placement: Near the bed or on the floor.


As you sleep you go through different phases, ranging from deep sleep to light sleep. The phase you are in when your alarm goes off is critical for how tired you will feel when you wake up.

Since you move differently in bed during the different phases, Sleep Cycle can use the microphone or accelerometer in your iPhone to monitor your movements and determine which sleep phase you are in.

Sleep Cycle wakes you when you are in your lightest sleep phase.

Sleep Cycle was developed using proven sleep science and years of research and development.




√ Sleep analysis with our patented sound analysis technology or if you prefer, the sensitive accelerometer in your iPhone

√ Detailed sleep statistics and sleep graphs

√ Carefully selected alarm melodies

√ Snooze by shaking or double tapping the phone lightly

√ Fully integrated with Apple Health. Exchanges sleep analysis and heart rate

√ Customizable wake up window. From instant (regular alarm clock) up to 90 minutes

√ Background mode - set your alarm and exit Sleep Cycle - sleep analysis will continue in the background

√ Support for the M7 and M8 co-processor - measure your daily physical activity and see how it affects your Sleep Quality

√ Export sleep data to Excel for detailed analysis


√ Online backup - secure your data online to make sure it’s always with you

√ Long term trends - compare your sleep with the world

√ Sleep aid - helps you fall asleep faster

√ Sleep notes - see how events such as drinking coffee, eating too much or having a stressful day affect your sleep quality

√ Wake up mood - see how using Sleep Cycle affects your morning moods

√ Weather - see how weather affects your Sleep Quality

√ Heart rate monitor - measure your resting heart rate (RHR) every morning using the built-in camera in your device

√ Philips HUE light bulb support - simulate a natural sunrise to give you an even softer wake-up

and more


Ability to charge your phone by the bed.
Ability to place your phone near the bed, such as on a nightstand table or on the floor.


The optional Premium subscription costs $23.99 per year.

It will be charged from your iTunes account after the purchase. You can manage or cancel your auto-renewable subscription by entering the user settings in iTunes after the purchase. The subscription will be auto-renewed 24 hours before the subscription period ends with the same kind of subscription you already bought to the same price. It's not possible to abort the subscription during the time it's active. Terms and Privacy:

What's New in Version 5.3

- New trend graph shows how the moon cycle affects your sleep quality
- Phillips HUE updates including support for Phillips HUE 2.0.
- New alarm melodies and ambient alarm sounds
- Bug fixes and stability improvements


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Customer Reviews

Great app to monitor sleeping patterns

I purchased a monthly subscription thinking I could better monitor and adjust my sleep based on sleeping patterns, which I have had a chance to do with the app, but that's not always the case because it really comes down to remembering; if the app had the ability to set a reminder or some type of notification on a specific time frame then that would make once less thing of having to remember at the end of the day. Other than that I really find the app useful and a good way to see what bad sleeping patterns I've developed by getting a visual representation with charts, also the way the app wakes you up gently durning your lightest stages of sleep is awesome, it really is; plus the tones used to wake you up makes it so great. Nothing more annoying and frustrating than hearing a loud alarm clock or buzzer wake you up while you're in deep sleep, guarantee you'll be waking up tired and in a cranky mood; try it for yourself. Finally, a word of advice, if you like getting at least 8 hours of sleep be sure to adjust the time frame of when the alarm is set to go off at about 8 1/2 hours since the recommend wake up phase is usually between 30 mins before your actual wake up time; keep in mind that it's trying to wake you up at the lightest stage of your sleep which is usually 30 mins or so before the time you actually wake up on a daily basis; for example when you wake up to go to work or class in the morning.

The Secret to Waking up on Time

I think I have found the perfect combination of alarm clocks. I always set Sleep Cycle to be my first alarm, and another app called SpinMe Alarm Clock as my backup. Sleep Cycle usually wakes me up in my optimal wake up time, but sometimes it just isn’t enough for me and I’ll either snooze through it or turn it off and go back to bed. If Sleep Cycle fails to wake me up, my backup alarm SpinMe will start blaring which can only be turned off if I get out of bed and spin around twice before it finally shuts off! Crazy but it works and I haven’t been late to work since I started doing this. And no you can't just spin the phone around in your hand!

Sleep Cycle really does help in waking you up during your light sleep. I can feel it working most mornings. And I have studied the science behind sleep so I can attest that the premise of this app isn’t merely a placebo, but something that has actually been proven. However the problem that this alarm clock doesn’t solve is that sometimes (especially on nights where you get very little sleep), it can be really easy to ignore your alarm clock and really hard to wake up. That’s where SpinMe Alarm comes in, an alarm clock that is impossible to ignore and forces you awake. I highly recommend using these 2 alarms together. Best few dollars I’ve ever spent!

Great, still missing a few luxuries

First, this app is great, and the latest update is fantastic! It works well and it's well designed. That said, there are a number of features I wish it had—they all exist in various other alarm apps, but those ones don't have the motion tracking ability this app does. For instance, it doesn't let me set some sort of challenge to disable the alarm (to make sure I'm really awake).

I also frequently wake up, turn off my alarm, and accidentally fall asleep again, and another app with motion tracking lets me set a toggle such that it will go off again if it doesn't detect any motion for a few minutes.

In addition, it has a feature where it will confirm with you if you set the alarm to a PM time. The idea behind this is great, but it's implemented poorly: if I'm going to bed at 3 AM and set an alarm for 1:00, what are the odds that I'm planning to sleep for 10 hours compared to the odds that I'm planning to sleep for 22 hours? It should really be a ">12 hour" confirmation rather than a "PM" confirmation.

Other features I wish it had include:
- automatically record audio when noise is detected (sleep talking)
- set a reminder for after the alarm is dismissed ("remember to wear a tie today!")
- provide a place to record notes upon waking (dream journal)

There are others that I've thought of that I can't remember at the moment, but that's all for now.
And all that said, it's a great app, and I believe it's the best option of its kind!

Sleep Cycle alarm clock
View In iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 5.3
  • Size: 61.9 MB
  • Languages: English, French, German, Italian, Japanese, Simplified Chinese, Spanish, Swedish
  • Seller:

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

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. Premium$1.99
  2. Premium$23.99
  3. Premium$9.99
  4. year SleepSecure membership$1.99
  5. Premium$10.99
  6. Premium$4.99
  7. Premium$6.99
  8. Premium$2.99
  9. Premium$19.99
  10. Premium$37.99