Sleep Cycle - Sleep Calculator

Contains adsIn-app purchases
3.8
578 reviews
100K+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

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
Updated on
Apr 16, 2024

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, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.8
562 reviews
A Google user
January 20, 2020
The alarm goes off some mornings and not others. It's completely inconsistent. No idea why. This is the second sleep cycle alarm app I've tried. Apparently the things don't work very well. Updated: This app is pure garbage. The alarm doesn't go off at all. Don't even bother installing it.
25 people found this review helpful
Did you find this helpful?
Luca
January 7, 2023
Really great, will give full 5 stars when the "wake time" section is corrected (I have sent an email) I have been feeling a lot better in the mornings when I wake up in line with my sleep cycles Does have ads but it doesn't bother me since you only use the app for a short time each night
1 person found this review helpful
Did you find this helpful?
A Google user
July 23, 2019
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 alarm goes off.
33 people found this review helpful
Did you find this helpful?

What's new

- bug fixes