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Copyright © 2025 Sleep Cycle AB. All rights reserved.
The World’s No.1 Sleep App
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Good Night. Good Tomorrow.
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Built on science, Sleep Cycle uses sound analysis to track and improve sleep for millions worldwide.
> App of the Day
Apple App Store
> Editors Choice
Apple App Store
**4.6** App Store
**4.5** Google Play
Backed by Science. Loved by millions.
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We take pride in having over a million people trust our app every night—more than any other in our field. This loyalty is built on 15 years of teamwork and creativity. Every feature we add is crafted with your input, backed by solid research, and powered by a unique database of three billion sleep sessions.
Product Features
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### Sleep Tracking
Measures duration, sleep stages, and interruptions throughout the night with unparalleled accuracy.
](/the-app/tracking)
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### Smart Alarm
Wake up during your lightest sleep phase to start your day smoothly, with a selection of pleasant alarm sounds.
](/the-app/smart-alarm)
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### Sleep Stages
Understand your sleep in full detail. How light, deep and REM sleep affect physical and mental recovery.
](/the-app/sleep-stages)
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### Sleep Sounds
Replay nighttime sounds and discover a fun way to explore your nights and wake up with a smile.
](/the-app/sounds)
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### Sleep Aid
A guided journey into restful sleep. Set to play with a soft fade-out and wake up refreshed.
](/the-app/sleep-aid)
Sleep Insights with Dr. Mike Gradisar
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Unlock the secrets to better recovery with The Science of Sleep, a captivating online masterclass series featuring Dr. Mike Gradisar, a world-renowned sleep expert. From the wild sleep patterns of teens to the busy nights of early adults in their 20s and 30s, the joys and jumbles of parenting young kids, the changes of menopause, and must-know advice for all, this series has you covered. With Dr. Gradisar’s 25 years of expertise, you’ll gain fun, practical insights to tackle sleep challenges at every stage, turning restless nights into mornings full of energy and possibility!
[Free Online Classes](/science-of-sleep/a-sleep-cycle-series)
A guide to
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### Healthy Sleep Habits
Building good sleep habits can transform your health and daily life. Stick to a regular sleep schedule—similar bedtime and wake-up time every day—to sync your body’s internal clock for better rest. Wind down with a calming routine, like reading or stretching, and keep your bedroom dark, quiet, and cool for the perfect sleep vibe. These simple steps boost your immune system, sharpen your mind, and lift your mood, proving that a little effort at bedtime pays off big for your well-being!
[Healthy Sleep Habits](/the-app/healthy-habits)