Kuu: Ride Out the Urge
Ride out the urge, calmly
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Caught yourself scrolling again at midnight?
Kuu (空, "emptiness") is a refuge app — a place to escape TO the moment an urge to scroll or binge hits. No blocking, no surveillance. Just a calm place to spend the few minutes until the wave recedes.
■ Wave — breathing starts the moment you open the app
- Physiological sigh / 4-7-8 / box breathing
- The chemical wave of an urge peaks in about 90 seconds — visualized with a timer
- Surfed it or got swept away: log it either way, without blame
■ Wisdom — 24 cards from East and West
- Buddhist emptiness, Yogacara, Zen, and Stoic philosophy
- The science of dopamine: wanting vs. liking, the pleasure-pain balance, the 90-second rule
- Practical tools: the 10-minute rule, HALT, cold water, urge surfing
- Every card ends with one small action to try right now
■ Stillness — slowly drifting ink-wash landscapes
- Moon and sea, mountain mist, a rock garden, bamboo, snow, stars
■ Log — statistics without shame
- Day streaks, waves surfed, a two-week chart
- Everything stays on your device. No account, no network, no ads.
An urge is a wave. It rises, peaks, and always recedes.
Keep a place for those few minutes in your pocket.
This app is not a medical device and is not intended for diagnosis or treatment.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- The breathing guide is now 4-7-8 (inhale 4, hold 7, exhale 8) for a simpler, calmer screen
- Choose from three guide sounds: temple (bowl, mokugyo, bell), singing bowl, or ocean waves. You can hear exactly when to inhale, hold, and exhale
- The app gate now works with any app on your iPhone, including Kindle and Chrome
- After the 90 seconds, Kuu takes you straight to the app you were opening
- The status bar is hidden during the gate, so you can't slip back to the previous app by accident
- Rewrote the gate setup guide with step-by-step diagrams
The developer, Takeaki Hashimoto, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Takeaki Hashimoto
- Size
- 22.6 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
- Copyright
- © 2026 Takeaki Hashimoto