Sleep as Android: Smart alarm

Contains adsIn-app purchases
362K 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), PineTime, 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
Nov 25, 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
362K reviews
Mitch Nelsen
November 24, 2022
It seems to record a lot of useful data, yet the app presents you with that data on a graph in which only the X axis is labelled as being time, and you're supposed to guess what they Y axis represents? This makes the data more difficult to interpret and use, and makes the app more of a gimmick. If the developers where to include the Y axis, and maybe if there where some short educational written bits or even a tutorial to help the user better interpret their data, it would be more useful.
3 people found this review helpful
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Urbandroid (Petr Nálevka)
November 24, 2022
Hello Mitch, the top graph (actigraphy) is only a representation of your movement activity level, it does not have any unit. The graph is explained in detail in the (?) help menu (the top right corner of the graph) → Documentation. The Legend option from the same menu leads to a simple legend of the elements of the graph.
Kollin Fakenamerton
October 14, 2022
The automatic (I do not manually turn it on) sleep tracker does not turn off. Halfway through my day I see it running in the background. I open it up and it shows in the graph I've been awake since 6:30 why doesn't it turn off or have some sort of option to end sleep tracking after a certain time. Sometimes it will randomly end and open up while I'm using another app and ask me to rate my sleep for the past 13 hours.
23 people found this review helpful
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Urbandroid (Petr Nálevka)
October 14, 2022
Hello Kollin, the manually started tracking must be ended manually by the user, or by the alarm. If you prefer automatic option, please enable this in Settings → Sleep tracking → Start sleep tracking → After fall asleep. Please, contact, or use the Left ≡ menu → (?) Support → Report a bug, directly from the app. Thank you.
John Phillips
October 15, 2022
Usually a reliable app. Been a loyal user since 2015. However after the last upgrade, the noise feature to playback recordings freezes the app. Please look into this problem. Received your reply. No, I'm not using default storage location. It's actually on SD card. Why would this make a difference?
10 people found this review helpful
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Urbandroid (Petr Nálevka)
October 17, 2022
Hello John, newer Android versions are using scoped storage system, which limits access to some locations. Could you please try with the default storage path and let me know, if it helps? Our contact is Thank you.

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: