JUKUSUI:Sleep log, Alarm clock

Contains adsIn-app purchases
25.6K reviews
Content rating
Enjoy this app for free, plus many more free of ads and in-app purchases, with a Google Play Pass subscription. Learn more
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About this app

JUKUSUI is a Japanese word that means “deep sleep” or “profound sleep.”
We will support to get good sleep for people all over the world through our app from Japan.

JUKUSUI is a multi-functional alarm clock designed to support and improve your sleep.

◆Lull Sounds
The healing lull sound will be played to induce peaceful sleep.

◆Smart Alarm
It detects your light sleep and wakes you up. We recommend this for those who always wake up feeling tired, who turn off the alarm only to fall back to sleep or who have trouble waking up in the morning due to hypotension.

◆Sleep Report
Tap the "Bedtime" button to sleep, swipe to turn off the alarm and get your daily sleep log to find out your sleep (quality, sleep efficiency, and hours of sleep) and snoring (hours of snoring and volume).

◆Cloud Service
This is a service to keep all of your Sleep Log on the dedicated server safely. All you need to do is signing up for this service on the app. After logging in, your daily sleep logs are automatically updated to the server. You don't need to work for backing up the data. When you change your device, you can transfer the data from your old device to the new one. This is a free service.

【Subscription Service "JUKUSUI Premium"】
●By purchasing the subscription, all Premium features are available for free and all in-app ads are hidden.
●The subscription fee will be charged to your Google ID.
●Offer the free trial per Google ID.
●The subscription fee will be charged within 24 hours before the end of the free trial. To cancel it during the free trial period, please proceed with the procedure more than 24 hours before the trial ends.
●The subscription fee will be charged within 24 hours before the expiration date. You can cancel the updates more than 24 hours before the expiration date.
●The subscription fee is non-refundable even if there is a time period of use when canceling your subscription.
●For cancellation of the updates, you can do it on MENU on Google Play.

【Terms of Service & Privacy Policy】
Terms of Service : https://jukusui.com/en/terms
Privacy Policy : https://jukusui.com/en/privacy

Updated on
Apr 2, 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.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

24.3K reviews
Rachel Stroud
March 2, 2024
I love the thorough details and recordings.
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Vincent Maldia
August 31, 2020
Best alarm app. It wakes you up when your sleep cycle is favorable. You can make weekly schedules. Just set it once and forget it. Annoying ads though.
28 people found this review helpful
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株式会社C2(C2, Inc.)
September 1, 2020
Random Passbyer
March 10, 2022
Decided to use this app again after some time. Good old days where watching ads grant permission to download lull sounds and simpler yet more intuitive interface... Right now somewhat ok. But the app pushes premium plan rather often
2 people found this review helpful
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株式会社C2(C2, Inc.)
March 14, 2022

What's new

Minor fix.