Sleep Calculator

DealWatch24 LLC

About this app

Good day starts with good morning! Go to bed at the right time and wake up in between your natural 90-minute sleep cycles to feel rested and refreshed. A good night's sleep consists of 5-6 complete sleep cycles.

◦ Select when you want to wake up
◦ Calculate your best time to go to sleep
◦ Calculate the best time to wake up

It takes an average human about 15 minutes to fall asleep. If you wake up at one of the calculated times, you'll rise in between 90-minute sleep cycles.

Sleep Calculator helps you decide when to go to bed so that you can wake at a specific time ensuring a good night’s rest, or what time you should wake up if you want to go to bed right now.

If you want to determine your real sleep cycles - our Sleep Tracker functionality allows you to track and analyze your sleep and, if done correctly, will show you your sleep progress – when you were in light, deep or REM (dream) sleep phase and the breakdown of your sleep cycles. Snoring/noise detection can be enabled as well.

Our brand new Smart Alarm will wake you up easy in the lightest sleep phase, making sure you wake up easy and rested.

Bedtime notifications can also be set up so that you do not miss a proper time to go to sleep.

Ratings and reviews

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.

I love this app so much. I've used it literally almost every day for years. its extremely useful. I struggle with extreme morning grogginess, which can lead to oversleeping and being late or missing work, events, appointments all together. this app helps avoid that stress because I'm no longer trying to wake up in the middle of my sleep cycle, which is avoiding as much grogginess as possible. I am also very bad at math so it helps me that I can just quickly check what time to set my alarm. LOVE

pretty great app, the times add up well and I do wake up easier at the times they say (it does have a tendency to mute my other alarms and prioritize its own alarm sound, which isn't enough to wake me up) my biggest complaint with this app is that you can't change the background color. the shade of cyan blue they chose is the exact color used in nature to wake you up. which isn't helpful if I'm trying to figure out when I need to go to sleep tonight and now I'm wide awake cuz I opened the app