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20 Jan. 2026
Android OSiOSRelease

JUKUSUI is now “NightWell” — A new step to support better sleep worldwide

From JUKUSUI: Sleep log, Alarm clock to NightWell: Smart Sleep Tracker

Thank you for using JUKUSUI.
We’re excited to share that, as part of our global expansion, we’re rebranding our app name from “JUKUSUI: Sleep log, Alarm clock” to “NightWell: Smart Sleep Tracker.”

This is more than a name change. It’s a strategic step toward becoming a brand that feels more intuitive, welcoming, and trustworthy for users around the world. Our mission remains the same: to help you understand your sleep, build better habits, and wake up to a better day—one night at a time.

Why we’re changing the name to “NightWell”

NightWell represents our vision:

  • Night — making your nights calmer and more restorative
  • Well — supporting your overall wellness through better sleep

With this new name, we aim to be a sleep brand that resonates across languages and cultures—one that stays close to what matters most: you and your nightly rest.
Rest assured: your core experience, data, and favorite features remain here—and we’ll keep improving them.

Key features of NightWell

NightWell helps you track your sleep, recognize patterns, and build a more restful routine.

1) Sleep Log — Turn sleep into insights

Sleep can be hard to evaluate by feeling alone. NightWell helps you log and review your sleep patterns, making it easier to notice trends over time.
By comparing “how you felt” with “what the data shows,” you can discover small changes that lead to better rest.

2) Snoring Detection & Playback — Understand what happens while you sleep

Snoring is something many people don’t realize they do—yet it can reveal meaningful sleep habits. NightWell lets you record and replay snoring, helping you understand patterns and changes over time.

3) Extensive Sound Library — Build a calming wind-down routine

NightWell offers a wide range of sounds to help you relax and unwind. You can also use them for a short mindfulness moment—such as slow breathing or a brief meditation—to reset after a busy day and transition into restful sleep.

4) Smart Alarm — Wake up gently, start the day well

How you wake up can shape your entire day. NightWell’s alarm is designed to support a smoother, more comfortable morning routine.
With simple, easy-to-use settings—and by pairing your alarm with your sleep log—you can better understand the connection between your nights and mornings, and build habits that help you wake up feeling more refreshed.

Looking ahead

NightWell will continue evolving to support better sleep for more people worldwide. This rebrand is the first step toward making our app easier to find, easier to trust, and easier to love—no matter where you are.

Looking forward, we’ll go beyond tracking and insights by strengthening support for your wind-down time as well—bringing more mindfulness-inspired experiences such as relaxation and breathing moments to help you reset at night and transition into restful sleep. We want your nights to feel like a calm, supportive start to a better tomorrow.

Thank you for being with us. We hope you’ll continue your sleep journey with NightWell.

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