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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 $9.99 per year, $4.99 for 3 months and $1.99 for 1 month.

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 5.2.1

- Fixed Health app integration. We’re sending “time asleep” to Health app again.
- Stability and performance improvements.


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Customer Reviews

Best Alarm Ever!!

I first bought this app when in was in its prepubescent stages. The only way it monitored your sleep was having to place it by your head and I just gave up on it because my phone kept falling on the floor. But they listened and now you can use your microphone to monitor your sleep and it makes the process so much more idiot-proof. I can keep my phone on my night stand while still monitoring my sleep. But this isn't even the intended use of the app. This app isn't advertised as a sleep monitor but as an alarm clock and it's even better when it comes to that! These people took the concept of snooze and turned it into a phenomenon that makes mornings too easy. The idea that it begins to wake you up as early as thirty minutes before your set alarm time and allows you to snooze until the alarm time, makes mornings a whole lot easier. I wake up in much less of a fog and I start my day with a lot more energy. In the beginning, the difficulty of the sleep monitoring would have been my only complaint but now they've fixed it so for me, this app is perfect! I never have to worry about the alarm not waking me up, as I do the alarm in the iPhone's clock app, because it will ring until you turn it off, not simply ring for a minute and automatically shut off. It has to be manual. If I could give this more than five stars, I would!

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!

Makes waking up so much easier!!

I'm the type of person to set up 20 alarms for the morning and it used to work until I started being sneaky. I would wake up to the first alarm and because I would have to turn my phone on and swipe (actually look at the screen), I would end up shutting off all 19 alarms that didn't ring yet. So I downloaded two alarm clocks apps. One I had to buy (Spin Me!) and this one was free. I really thought the Spin Me would work better but it actually didn't. This app works 10x better. Because it uses the microphone to analyze your movement, you snooze it by waving your hand past it. This means I won't have to physically touch my phone, preventing me from turning off alarms. I usually have my head on the pillow and already know where to wave my hands in the morning to snooze it. What's better is that it transitions you into being awake. If you set the alarm to wake you up at 7 then it will start ringing at 6:30 and will allow you to snooze it UNTIL 7 am. What I mean is, it will keep ringing at intervals of 5 minutes I believe or 10 until 7 am. By that time (7am) you can no longer snooze it and have to shut up manually. Anyone thinking of choosing between this one and the Spin Me alarm shouldn't bother wasting their money on Spin Me. This will do just fine.

Sleep Cycle alarm clock
View In iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 5.2.1
  • Size: 53.1 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:
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Top In-App Purchases

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