Sleep log, Alarm clock:JUKUSUI v5.3.30

C2 INC

Contains ads • In-app purchases

Sleep log, Alarm clock:JUKUSUI screenshot 0

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About this app

Developer Description

Easy Steps for Getting Better Sleep Just tap "Bedtime" button and get to sleep

- WHAT IS JUKUSUI?
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.

【about JUKUSUI APP】
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

【Support】
jukusui@c2inc.co.jp

What's New

Minor fix.

In-app purchases

$0.49 - $39.99 per item

Version Information

Version: 5.3.30
Downloads: 1M+
Updated on: Dec 18, 2025
Released: Jun 2, 2013
Requires: Android 9

Statistics

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Sleep log, Alarm clock:JUKUSUI - Google Play Rankings

Rank	Country	Category	List	Change
				—

No ranking data available yet. Rankings are updated daily.

#6 in Top Grossing Health And Fitness in Japan

Strava: Run, Bike, Hike

Sleep log, Alarm clock:JUKUSUI

SnoreLab : Record Your Snoring

#55 in Top Free Health And Fitness in Japan

#54

InBody

#55

Sleep log, Alarm clock:JUKUSUI

#56

Flo Ovulation & Period Tracker

Sleep log, Alarm clock:JUKUSUI users say on Google Play

★★★★★

Vincent Maldia

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.

★★★★

A Google user

not EXACTLY what i was looking for, but the best i could find without buying extra equipment.

★★★

A Google user

Pretty good as a basic smart alarm with a few nice gentle alarm sounds. Although had to delete it as adverts got annoying especially as they all seem to be diet focused, and got fed up of being woken up by some unfeasibly flat stomached Japanese woman trying to sell me magic tea.

★★

A Google user

🚩Inappropriate attempt to skew ratings! I would have given this app more stars, but the very first time I used it, this message popped up: "Will give you Lull Sound Summer Night [lull sounds are a feature of the program and many are locked] if app review with ⭐5!" (can't attach my screenshot but I have one.) It's too bad, because apart from a couple minor issues like the lull sound timer only going up to six hours, this was one of the best sleep data apps I could find, but blatantly offering free gifts in return for five-star ratings (and after only one use!) is really not cool and probably grounds for getting kicked out of the marketplace. I did *not* officially flag the app with Google because I wanted to give the developers a chance to remove this message, but if it is still popping up for future users after, say, 1/31/18, I encourage someone to officially flag these folks. (Scroll down to the way bottom and flag is one of the last links on the app page.) There's a lot of good and useful stuff here but bargaining for ratings like that is unacceptable and doesn't give you an accurate picture of what the app needs anyway. Please remove that pop-up, devs. It's not only against the rules but it really hurts your image.

★

A Google user

Drained battery fast, so unistalled