Yoine
Sound for your quiet hours
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Press play, put the phone down. Quiet sound for your wind-down. No account or ads. Settings and playback history are not sent automatically.
Yoine is a soundscape app for relaxing, focusing, and falling asleep. It blends noise, ambient harmony, and sparse chimes. With Yoine Full, the sound automatically becomes darker and quieter based on the time of day and your bedtime.
THREE SCENES
• Relax: wave-like sound with soft harmony, a background for doing nothing
• Focus: pink noise, steady sound beside reading or work
• Sleep: drone and low noise, quiet sound shaped around bedtime
SLEEP SCENE
Set a playback time, and the sound quiets gradually to match it, then fades out and stops. With Unlimited, the music slowly recedes over about 40 minutes and a soft bed of sound continues until you stop it.
SHAPED AROUND YOUR BEDTIME
With Yoine Full, set a bedtime and the sound gradually calms starting two hours before it.
MINIMAL CONTROLS
Start and stop share one button in one place. Works from the lock screen. A dark interface made for dark bedrooms.
VOLUME AND PLAYBACK TIME
Set a volume limit and one playback time for every scene (Unlimited or 15 minutes; 30, 45, 60, or 90 minutes with Yoine Full). Timed playback fades out and stops at the end. Save separate reference volumes for the built-in speaker and for other outputs, and get a gentle notice on screen during playback when the volume drifts from them.
YOUR DATA STAYS WITH YOU
No account. Settings and playback history stay on your device and are not sent to the developer automatically. In the optional survey, the developer receives the nights of use and purchase status that you enter and submit, to improve features. You can also choose to share diagnostics. The app uses Apple StoreKit for purchases, restoration, and related checks. No ads.
FREE AND PAID
The free version is complete for a full night (all three sounds, Unlimited or 15-minute playback time, volume limit, history).
A single one-time purchase, Yoine Full, adds 30-, 45-, 60-, and 90-minute playback times, automatic bedtime adjustment, and sound mixing. The App Store purchase screen shows the price before you confirm. No subscription.
Yoine is not a medical device and is not intended to diagnose, treat, or prevent any condition. Results vary.
The research that informed the design is listed under References in the app. Those studies were conducted independently and do not demonstrate this app's effects.
ABOUT USE
Yoine is made for personal use. An app for businesses such as saunas, spas, and salons is planned. Get in touch at contact@yoine.app if you are interested.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Added an optional anonymous usage survey in Settings for users with at least seven recorded nights of use. Available through November 30, 2026 (Japan time).
The developer, Yasuyuki Kamata, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yasuyuki Kamata
- Size
- 6.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Yoine Full $2.99
- Copyright
- © 2026 async-aw8