Sleep as Android: Smart alarm

Contains adsIn-app purchases
356K reviews
Editors' Choice
Content rating
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About this app

Smart alarm clock with sleep cycle tracking. Wakes you gently in optimal moment for pleasant mornings.

Sleep as Android is a swissknife tool for your sleep.

• Sleep cycle tracking with smart wake up uses your phone or any of the many supported wearables
(2 weeks premium trial, with a freemium mode afterward)
• Sonar: revolutionary contact-less ultrasonic sleep tracking (no need for phone in bed)
• Wearable tracking supports: Wear OS, Galaxy/Gear (Tizen), Garmin (ConnectIQ), Mi Band + Amazfit (via companion apps), Polar (H10, OH10, Senes), FitBit (Ionic, Sense, Versa), Pebble
• Sleep Score: complete evaluation of your sleep\'s quality made of: deficit, regularity, efficiency, sleep phases, snoring, oxygenation (SPO2), heart rate variability (HRV)
• Reliable and feature-rich alarm including bi-weekly and shift work schedules
• Advanced AI-powered sound classification: Sleep talk recording, sickness detection, snoring detection and anti-snoring
• Sleep respiration analysis with low breath rate alarm
• Super reliable and super configurable alarms (check your OEM at
• Trend charts, Goals for gradual improvement of your sleep and detailed advice on your sleep habits
• Bedtime reminder and irregularity tracking helps you keep regular sleep schedule (regular means healthy)
• Never oversleep again with CAPTCHA wake up verification (Math, Sheep counting, Phone shaking, Bathroom QR code or NFC tag)
• Health services sync: Google Fit, Samsung Health
• Gentle volume increasing nature sound alarms (birds, sea, storm...) and playlists
• Nature sound lullabies (whales, storm, sea, chants..) with binaural tones for fast fall asleep
• Spotify and online radio alarms and lullabies
• Sunrise wake-up with smart bulbs: Philips HUE, IKEA TRÅDFRI
• Complete automation with IFTTT, MQTT, Tasker or custom Webhooks
• Lucid dreaming: experiment with your sleep and consciousness
• Jet lag prevention for frequent travelers
• Lark or Owl?: Chronotype detection
• Focus on privacy
• Material YOU colors
and more

Quick start

Video tutorial



Permissions explained

See how we do contact-less sleep and breath tracking with Sonar

How we designed our neural networks for sleep sound classification

Watch our latest smartwatch integration progress

Accessibility Service

The app features a series of alarm tasks called CAPCTHA which make sure you do not oversleep. Completing tasks like sheep counting, math equations or scanning a bar-code on your toothpaste will make sure you are fully awake and ready for your morning.

To make sure you won\'t sleep through your duties the app may use an Accessibility Service to prevent you from force stopping the app or turning off the device (cheating) before completing the alarm tasks (CAPTCHA). No private information are collected.

Device Admin

This app may use the Device Administrator permission.
The reason is effective CAPTCHA (a feature to make sure you wake up in the morning) so you cannot avoid alarms by uninstalling the app during an alarm.

Health disclaimer

Sleep as Android is not intended for medical use, but instead to improve general fitness and well-being especially in terms of better sleep. Any oxygen saturation tracking is performed with compatible oximeter devices such as the TicWatch 3 Pro, BerryMed oximeters... more at

Many thanks to our users for using and supporting this apps!
Updated on
May 19, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, Health and fitness and 2 others
This app may collect these data types
Location, Health and fitness and 3 others
Data is encrypted in transit
You can request that data be deleted
356K reviews
May 27, 2022
Since last app update the snooze stopped sounding alarm. The alarm goes off, but if I hit snooze the app doesn't sound the alarm again like it should. Also it does not require scanning the captcha to end cause it doesn't alarm after snooze. The whole reason I got it. Reply is generic and something most people do when they get an alarm app. I did not get a Samsung update, I got an update to the sleep app and the snooze stopped working. Bug report sent.
2 people found this review helpful
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Urbandroid (Petr Nálevka)
May 27, 2022
Hello, battery restrictions on Samsung keep changing all the time, they keep adding new ones, or relocate them in the layout. Please, use the Left ≡ menu → (?) Support → Report a bug. Thank you.
Mark Makowski
May 27, 2022
Not user friendly whatsoever. A lot of functionality but it isn't done very well. Sleep tracking is always wrong for me. You can't edit your alarm without disabling it first. I want this app to work but it just irritated me to use it. Why does the alarm have a timeout feature? Absolutely useless as an alarm.
20 people found this review helpful
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Urbandroid (Petr Nálevka)
May 28, 2022
Hello Mark, alarms can be edited any time, no need to disable them first - just tap the alarm time and the app will open the time picker directly. The alarm rings for 20 minutes, then triggers full volume backup alarm, then starts a again. The period can be prolonged to 2 hours. Does it mean you need the alarm ring more than 2 hours continuously?
May 14, 2022
So, I finally found a way to switch when your day resets ( it's under "Settings: Stats" ) so that problem is taken care of. Now I just wish there was an option to set an alarm for something like "at least 8 hours after I fall asleep" instead of just a set time like 10:00 for those days when you don't need to get up at a specific time but really want to get your whole sleep cycle in.
8 people found this review helpful
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What's new

We are constantly improving this app with several updates monthly. Bringing timely fixes and new features you ask for. Detailed release notes at: