Sleep as Android: Smart alarm

Contains adsIn-app purchases
370K 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.

Enjoy 2 weeks premium then keep freemium or upgrade.



✓ 12 years experience

✓ Validated algorithms

✓ Get to bed on time with Bedtime notification

✓ Smart wake up feels natural!

✓ Sonar contact-less tracking: No need for phone in bed!

✓ AI-powered sound recognition: Anti-snoring, Sleep talk, Sickness

✓ Nature sound lullabies

✓ Sleep respiration analysis with low breath rate alarm

✓ Lucid dreaming, Anti-Jetlag...


✓ Alarm clock with all the features

✓ Gentle alarm sounds

✓ Spotify songs or playlists

✓ Sunrise alarm

✓ Never oversleep again: CAPTCHA tasks, Snooze limit


✓ Sleep Score: deficit, regularity, efficiency, phases, snoring, breath rate, SPO2, HRV

✓ Trends, Tags, Chronotype detection and Advice

✓ Privacy first


✓ Wearables: Pixel Watch, Galaxy Watch, Wear OS, Galaxy/Gear (Tizen), Garmin (ConnectIQ), Mi Band + Amazfit + Zepp (needs 3rd party app), Polar (H10, OH10, Sense), FitBit (Ionic, Sense, Versa), PineTime, Pebble

✓ Spotify

✓ Smartlight: Sunrisewake up with Philips HUE, IKEA TRÅDFRI

✓ Automation: IFTTT, MQTT, Tasker or custom Webhooks

✓ Services: Google Fit, Samsung Health, Health Connect

✓ Backup: SleepCloud, Google Drive, DropBox

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
Wearables and Wear OS

We integrates with Wear OS and many other Wearable platforms (Garmin, Polar, FitBit, Galaxy Watch, Zepp,Mi Band...). You can install Sleep as Android on your watch and use its sensors for more precise sleep tracking. On Wear OS you can use a Wear OS Tile to start / stop or pause sleep tracking and check you progress without the need to interact with your phone.

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 28, 2023

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
Data can’t be deleted

Ratings and reviews

356K reviews
j baer
November 27, 2023
*UPDATE: The add sleep button is now buried in the graphs screen, it doesn't show on the home screen anymore. It only has 'begin tracking'. Please add this back to the home screen! It took a lot of searching to find it while it used to be easy.* Overall good app, helps track sleep and a variety of other measures. I appreciate that the developers listen and respond to feedback. A lot of new features have been added, but I don't use most of them, just track time and movement, etc.
341 people found this review helpful
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Urbandroid (Petr Nálevka)
November 28, 2023
UPDATE: The "Add Sleep" is still available on the main screen, on the Shortcuts board (as it has always been). If you swiped the Shortcuts board away, you can add it back with "ADD/HIDE" button at the bottom. The Shortcut board can be also pinned to the top. If you are using Tabs layout, the (Add Sleep) button is available on the Graphs Tab.
Melissa Menefee
November 27, 2023
This app does so much and I love that I can activate it from my watch. My only complaint is that the UI could be improved and more clear, and I'd like to be able to zoom in on my sleep graph from the previous night, but it assumes you want to trim the data. The different captcha options to wake up are great. I love the feature of being able to auto change the alarm time day over day, which is really useful planning for daylight savings time changing or a trip overseas.
2 people found this review helpful
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Miranda Lewandowski
October 30, 2023
It's great when it actually works...I use the app for alarms, I like forcing myself to do a math problem to turn it off so I don't fall back asleep. However. Sometimes the alarms don't go off...They are not set for another day. They are set for that exact date and time. Most of the time the app works as it should. But I can't risk my alarms not going off... The default alarm volume has also changed on its own a few times, always changing the sound to be much quieter...something I did NOT do.
18 people found this review helpful
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Urbandroid (Petr Nálevka)
October 30, 2023
Hello Miranda, Samsung did probably put the app into the list of sleeping apps and now prevents it from working in background - starting alarms.. can you please follow on how to prevent Samsung from killing the alarm? for details please contact

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: