Sleep Calculator icon

8.5 50 Reviews


1.2.129


March 6, 2025

About Sleep Calculator

Sleep Calculator

✦Introduction✦

Sleep Calculator is an intuitive app designed to help users optimize their sleep by calculating the best times to go to bed and wake up. 

By aligning sleep with natural 90-minute cycles, the app aims to enhance overall restfulness, making sure you feel refreshed and alert in the morning.

Aiming for 5-6 complete sleep cycles, the app is a valuable tool for anyone looking to improve their sleep quality.

-------✦ App Features ✦-------

• Wake-Up Time Selection

Choose your desired wake-up time, and the app will calculate the optimal bedtime to help you wake up feeling refreshed.

• Bedtime Calculation

Determine the best time to go to sleep based on your selected wake-up time, ensuring that you complete full sleep cycles.

• Wake-Up Time Calculation

If you decide to go to bed immediately, the app can also calculate the best time for you to wake up after completing natural sleep cycles.

• Sleep Cycle Understanding

Learn about the average time it takes to fall asleep (approximately 15 minutes) and how waking up during a 90-minute sleep cycle can enhance your rest.

• Sleep Tracker Functionality

Monitor and analyze your sleep patterns, including the duration spent in light, deep, and REM (dream) sleep phases to understand your sleep quality better.

• Snoring and Noise Detection

Enable a feature that detects snoring and other noises during the night, providing insights into any disturbances that might affect your sleep.

• Smart Alarm

Utilize the Smart Alarm feature, which wakes you up during the lightest phase of sleep, making it easier to get out of bed feeling rested.

-------✦ Q & A ✦-------

Q1: How does the app calculate my bedtime or wake-up time?

A1: The app allows you to select a desired wake-up time, and it calculates the ideal bedtime based on sleep cycles, typically lasting 90 minutes each. It takes into account the average time it takes to fall asleep (around 15 minutes).

Q2: What is the purpose of sleep cycles?

A2: Sleep cycles consist of several phases, including light sleep, deep sleep, and REM (dream) sleep. Waking up at the end of a sleep cycle helps you feel more refreshed and alert, rather than groggy.

Q3: Is there a feature for detecting snoring?

A3: Yes, the app has a snoring and noise detection feature, which records any disturbances during the night. This information can help you understand factors that may be affecting your sleep.

-------✦ User Reviews ✦-------

GOOGLE USER REVIEWS

1. Josiah L - 5 Star Rated at September 6, 2024

Best free app for sleep tracking. Reasonably good sleep tracker, including cycles. I wish it would show a line graph of sleep movement and sound, instead of only showing Light Sleep, REM, and Deep Sleep. Trends section is reasonably robust. I wish there was a bar graph that combined duration with bed time and wake time, same as Google Fit and Sleep as Android show. I also wish there was a nap option. That being said, it's still the best free app out there, almost as good as Sleep as Android.

2. Anant Parwani - 5 Star Rated at September 2, 2024

Does not improve the sleep but provides you the data for own analysis. Main thing that it's free and ad free, love to the developer and it has everything almost which you would require, normally it says to keep battery atleast 60% but it takes only 10-15 in 6-7hrs of my sleep. Graphs are very accurate as it actually says what I feel about my sleep quality that night. Thankyou very much to the developer. Have been searching for app like this for years(2-3).

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What's New in the Latest Version v1.2.129 ——Apr 2024

Minor bug fixes and improvements. Install or update to the newest version to check it out!

Additional APP Information

Latest Version

Request Sleep Calculator Update 1.2.129

Uploaded by

DealWatch24 LLC

Requires Android

Android 9.0+

Available on

Get Sleep Calculator on Google Play

Last Updated

March 6, 2025

Sleep Calculator Screenshots