Wake up refreshed! Calculate your sleep cycles and avoid morning grogginess
3.76·1,222 reviews·100,000+ downloads
About Time4Sleep: Sleep Cycles
Time4Sleep: Sleep Cycles is a health & fitness app developed by Circle Apps Studio.
How many times has Time4Sleep: Sleep Cycles been downloaded?
Time4Sleep: Sleep Cycles has been downloaded 110 thousand times. In the last 30 days, the app was downloaded 380 times.
What is the rating of Time4Sleep: Sleep Cycles?
Time4Sleep: Sleep Cycles is rated 3.76 out of 5 stars, based on 1.2 thousand ratings.
Is Time4Sleep: Sleep Cycles free?
Time4Sleep: Sleep Cycles is free to download. The APK download size is 8.88 MB. The latest version available is 2.8.0. The last update was on August 13, 2026.
What are the requirements for Time4Sleep: Sleep Cycles?
Time4Sleep: Sleep Cycles requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play August 2020.
Description
💤 Time4Sleep – Smart Sleep Cycle Calculator to Sleep Better and Wake Up Energized.
Time4Sleep is a precision sleep cycle calculator and smart alarm assistant designed to help you sleep better, wake up refreshed, and improve your rest naturally.
Stop waking up tired. Discover the best time to fall asleep or wake up by optimizing your REM sleep cycles.
Simply choose your desired time, and Time4Sleep will automatically calculate the perfect windows so you can wake up with more energy and avoid morning grogginess.
🔶 Main Features: ✓ Smart sleep cycle calculator based on biological rhythms. ✓ Helps you sleep better and wake up without grogginess (sleep inertia). ✓ Tools to optimize your nighttime routine and circadian rhythm. ✓ Clean, minimalist, and intuitive interface for better usability. ✓ Tips to achieve deeper, more restorative and restful sleep. ✓ Useful information on how sleep works and how to optimize it with science.
✨ AIBrief – Intelligent Sleep Assistant. Time4Sleep includes AIBrief, an AI-powered assistant that gives you personalized summaries, daily suggestions, and calming messages to improve your sleep quality.
AIBrief analyzes your habits and provides: ✓ Personalized greetings based on the time of day. ✓ Simple tips to sleep better and rest more deeply using AI technology. ✓ Short reflections for your morning and nighttime routine. ✓ Easy recommendations to wake up with more energy and focus. ✓ Daily support to help you build healthy and lasting sleep habits.
AIBrief turns your nights into a moment of calm and your mornings into a clearer, more balanced start.
🌙 Perfect for you if you want to: • Sleep better and improve your overall health. • Wake up without grogginess every morning. • Optimize your sleep cycles and REM stages. • Achieve deeper, more restorative rest. • Build a healthy nighttime routine with AI support. • Use smart tools to relax and boost your daily well-being.
🚩 Need help? Contact us at: soporte.circleappsstudio@gmail.com
Recent changes: 🚀 New update available!
🌙 Redesigned home screen: We revamped the main menu to make choosing your sleep schedule more intuitive and comfortable.
🎨 Visual improvements: We optimized the UI to give you a better overall experience.
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It helps me to track the quality of my sleeping time. Simple but very useful. Thank you.
★★★★☆Cassandra Kunkel· Jul 16, 2022
It's a nice app, I like the computer scheme and usability. I do not like the ads banner at the bottom, and I'm disappointed that I cannot add a "time to fall asleep" setting. It's easy to manually calculate 9 hours, 7.5 hours, etc., what I'm looking for is adding 15-30 mins for falling asleep.
★★★★★John Smith· Oct 3, 2023
Does what it says. Perfect. Edit: There's a brief flash to white at the beginning, but the devs are actively trying to improve the app, as with the removal of the bright logo. So a full 5 stars from me.
★☆☆☆☆Helen· Oct 23, 2025
I used to really love this app. Relied on it, but specifically loved it beyond others for its simple and intuitive design. However, recently they have started hitting me with more and more ads, which I would endure if it weren't for the fact that more often than not they have started autoplaying with loud audio, and regularly just upon opening the app! Which isn't ideal, on an app to aid sleep that one might be using at night!!! Next to, say, their sleeping partner! Very, VERY annoying.
Google Play Rankings for Time4Sleep: Sleep Cycles
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Technologies used by Time4Sleep: Sleep Cycles
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