An offline sleep-sound app with rain, nature, and ambient sounds, plus a timer and gentle fade-out for bedtime.
Made for
For people who want calming bedtime audio without an account or ads.
Health & Fitness · LIVE
Yoi no Oto
Settle into the night with quiet sound.
Account: NoExternal upload: No
- Price
- Free
- Requires
- iPhone · iOS 17+
- Live version
- v1.0
- Availability
- Live on the Japan App Store
01
Before and after
For people who want calming bedtime audio without an account or ads.
An offline sleep-sound app with rain, nature, and ambient sounds, plus a timer and gentle fade-out for bedtime.
Settle into the night with quiet sound.
02
What it does
- 01
One-tap playback and a 15–90 minute sleep timer
- 02
26 sounds, mixes of up to three, and favorites
- 03
Background, lock-screen, and Bluetooth playback
03
Good moments to use it
- Winding down before sleep
- Ambient sound while reading or resting
- Preparing for bed with a timer
04
Price and model
Window Rain is free. Pro is a one-time purchase that unlocks 26 sounds and mixing, with no auto-renewal.
- Ads
- No
- Subscriptions
- No
- In-app purchases
- Yes
05
Privacy summary
No account, ads, or subscription. History stays on the device; the app does not use sleep tracking, the microphone, or HealthKit. Network access is limited to in-app purchase verification.
- Account
- No
- Third-party tracking
- No
- External upload
- No
- Primary storage
- On device
- Analytics service
- No
06
Recent update
Aug 5, 2026v1.0
- Initial public release
- 26 sleep sounds and mixes of up to three
- 15–90 minute timer, fade-out, and background playback
07
Related apps
Settle into the night with quiet sound.