Sleep Cycle - Sleep Calculator Alarm Clock
Hot Android Apps & Tools Health & Fitness In-app purchases Contains ads
Sleep and wake up in most natural way with sounds of the nature.
- Rating
- 3.9
- 754 ratings
- Downloads
- 100K+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Jun 24
- 2026 · v2.44
Screenshots
About Sleep Cycle - Sleep Calculator Alarm Clock
Does your phone alarm wake you up angry, make you mad for the whole day, and sometimes not even go off? Our sleep calculator will help you fall asleep and wake up in the most natural way and help you get your day started full of energy and with a smile on your face.
Waking up in the middle of a sleep cycle can leave you groggy and ruin your whole day. Our app helps you find the perfect moment to wake up or fall asleep in order to maximize your sleep and keep you fresh all day. A normal sleep cycle lasts 90 minutes and, using that as a foundation, our app calculates the exact moment when you’re brain and body are ready to awaken.
Our app uses natural sounds to slowly bring you out of your sleep cycle and make sure you are wide awake. Once you have selected the sound of your choice, the sound will be played slowly and steadily, increasing in volume, for one minute.
There are eight natural sounds you can choose from:
- Bird Song
- Birds in the forest
- Ambient loop
- Gentle piano
- Seaside Sounds
- Garden
- Rapid river
- Kenyan Savannah Grassland
The app allows you to choose:
- when to wake up
- when to go to sleep
- when to wake up if you sleep now
You can also set up alarm with the app and browse all "Sleep Time" alarms inside our app.
This app is perfect for modern people who often don't get enough sleep. This app allows you to maximize the amount and quality of sleep you get and make sure you are never late (or groggy) to a class or meeting again!
Features:
- calculates when to wake up and when to sleep to feel great
- calculates when to wake up if you are already asleep now
- add an alarm by clicking on a time
- light and Dark themes
- choose from 8 natural sounds
- browse all "Sleep Time" alarms inside the app
Waking up in the middle of a sleep cycle can leave you groggy and ruin your whole day. Our app helps you find the perfect moment to wake up or fall asleep in order to maximize your sleep and keep you fresh all day. A normal sleep cycle lasts 90 minutes and, using that as a foundation, our app calculates the exact moment when you’re brain and body are ready to awaken.
Our app uses natural sounds to slowly bring you out of your sleep cycle and make sure you are wide awake. Once you have selected the sound of your choice, the sound will be played slowly and steadily, increasing in volume, for one minute.
There are eight natural sounds you can choose from:
- Bird Song
- Birds in the forest
- Ambient loop
- Gentle piano
- Seaside Sounds
- Garden
- Rapid river
- Kenyan Savannah Grassland
The app allows you to choose:
- when to wake up
- when to go to sleep
- when to wake up if you sleep now
You can also set up alarm with the app and browse all "Sleep Time" alarms inside our app.
This app is perfect for modern people who often don't get enough sleep. This app allows you to maximize the amount and quality of sleep you get and make sure you are never late (or groggy) to a class or meeting again!
Features:
- calculates when to wake up and when to sleep to feel great
- calculates when to wake up if you are already asleep now
- add an alarm by clicking on a time
- light and Dark themes
- choose from 8 natural sounds
- browse all "Sleep Time" alarms inside the app
What’s new
Version 2.44 · Updated June 24, 2026
- bug fixes
User reviews
Very nice
Exactly what I was looking for. Ads are okay, only 5 seconds. Is there an ad free version available? Toll, genau das wonach ich gesucht habe. Die Werbung stört nicht allzu sehr, letztlich 5-Sekunden-Blöcke. Gibt es eine werbefrei Version?
Hi friends
makes my alarm clock every single night. this makes me feel sure that i am getting the proper & a healthy amount of sleep each night. perfect for naps during the day. this way i know how long or how short my nap should be & i wake up more refreshed. a feeling of knowing i slept enough & i pop out of bed when the ala...
Hello! Just wanted you to know I really enjoy your information! It is interesting, informational and has changed my sleep hygiene as a result! I worked 7p-7a ,all my life, and now retired. I have never been able to get back to living like a " normal" person, as I still cannot sleep at night like the rest of you. Wit...
Frequently asked questions
How does the sleep calculator alarm clock help with waking up?
Our sleep calculator determines the perfect moment to wake up or fall asleep in order to maximize your sleep and keep you fresh all day.
What is the duration of a normal sleep cycle?
A normal sleep cycle lasts 90 minutes.
How does the app use natural sounds to wake you up?
The app uses natural sounds to gradually bring you out of your sleep cycle and ensure that you are wide awake.
How many natural sounds can you choose from in the app?
You can choose from eight natural sounds, including bird song, birds in the forest, ambient loop, gentle piano, seaside sounds, garden, rapid river, and Kenyan savannah grassland.
What can you set up with the app?
You can set up alarms, choose when to wake up, when to go to sleep, and when to wake up if you sleep now.
Who is the app designed for?
This app is designed for modern people who often don't get enough sleep and want to maximize the amount and quality of sleep they get.
What features does the app have?
The app features include calculating when to wake up and when to sleep to feel great, calculating when to wake up if you are already asleep, adding alarms, light and dark themes, choosing from eight natural sounds, and browsing all "Sleep Time" alarms inside the app.
Alternatives to Sleep Cycle - Sleep Calculator Alarm Clock
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| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Sleep Cycle - Sleep Calculator Alarm Clock | 3.9 / 5 | Free | 100,000+ | Jun 24, 2026 | |
| SnoreApp: snoring & snore anal | 4.0 / 5 | Free | 100,000+ | – | Compare |
| SleepScore™ | 3.0 / 5 | Free | 100,000+ | Oct 20, 2026 | Compare |
| sleeplus | 3.3 / 5 | Free | 50,000+ | Apr 29, 2024 | Compare |
| Snore Free : Stop Snoring Gym, | 3.7 / 5 | Free | 100,000+ | Aug 19, 2026 | Compare |
| Sleep Calculator | 4.4 / 5 | Free | 100,000+ | Sep 28, 2026 | Compare |
| Workout Timer for HIIT and Tab | 4.3 / 5 | Free | 10,000+ | – | Compare |
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