# Kuu: Eyes-Open Meditation — Sit 3 minutes. Breathe 4-7-8

> Sit 3 minutes. Breathe 4-7-8 (iPhone/iPad app by Takeaki Hashimoto.)

- Source: https://appshunter.io/ios/app/kuu-eyes-open-meditation/id6801987654 (this page in markdown: same URL + `.md`)
- Developer: [Takeaki Hashimoto](https://appshunter.io/developer/6775720582)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 114 MB
- Languages: American English, Japanese, Chinese (Traditional, Taiwan)
- Released: 2026-08-23
- Data updated: 2026-10-29

## What is Kuu?

Sit for three minutes, eyes open.

Kuu (空, "emptiness") is an app for daily meditation.
Watch a bonfire, the aurora, or a tropical beach while breathing in the 4-7-8 rhythm.
It still works as a refuge for the moment an urge to scroll hits.

■ Meditate — your daily sit
- Choose a length: 3, 5, 10, 15, 20, 30 minutes, or open-ended
- Choose what to watch: liquid, aurora, colored flame, bonfire, tropical beach, or Evidence
- "Evidence" shows one research finding on meditation and breathing per breath (108 findings, each with its source and PMID)
- Each video is three minutes long and loops seamlessly, so 10 or 20 minutes feels continuous
- Cues for 4-7-8 breathing (inhale 4, hold 7, exhale 8), or "just sit" with no cues
- A bell marks the start and the end. Your minutes and day streak are logged

■ Breathing cues — by sound or by touch
- Five sounds: temple bells, singing bowl, ocean waves, bonfire, voice guide
- Silent mode: no sound at all — vibration alone tells you when to inhale, hold, and exhale. Works on the train

■ Wave — when an urge hits, come here
- Breathing starts the moment you open it
- 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

■ Gate — put 90 seconds in front of the app you reach for
- Stand it in front of Safari, X, Instagram, YouTube, Kindle, or any app you choose
- Set up with a single action in a Shortcuts automation
- Nothing is forcibly blocked. It only adds a pause

■ Log and wisdom
- Meditation streak and total minutes, waves surfed, a two-week chart
- "Today's wisdom": 24 cards on emptiness, Yogacara, Zen, Stoicism, neuroscience, and practice
- Everything stays on your device. No account, no network, no ads

■ English, Japanese, and Traditional Chinese (switchable in-app)

This app is not a medical device and is not intended for diagnosis or treatment.

## Is Kuu safe?

Not enough ratings yet to assess Kuu.

## Is Kuu legit?

Kuu: Eyes-Open Meditation appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Kuu is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.9 — 2026-10-26

1.9
・Updated the App Store name and subtitle to reflect what Kuu is now: a meditation app
・Minor refinements

### 1.8 — 2026-10-25

1.8
・Breathing cues now stay perfectly in step with the visuals (evidence text and the swell), no matter how long you sit
・Evidence doubled to 108 findings, each with its source and PMID. No repeats even in a 20-minute sit

### 1.7 — 2026-10-21

1.7 — New "Evidence" visual
・With each breath, one research finding on meditation and breathing appears (54 in all, each with its source and PMID). It fades in on the inhale and out at the end of the exhale
・Visuals are now five videos (liquid, aurora, colored flame, bonfire, tropical beach) plus Evidence. The mandala and sunflower spiral were removed
・The swell of the visuals is now exactly in step with the breathing cues

### 1.6 — 2026-10-12

1.6 — Kuu becomes a meditation app
・New "Meditate" tab: pick a length (3–30 min, or open-ended) and something to watch, then sit. A bell marks the start and the end
・7 visuals: mandala, sunflower spiral, liquid, aurora, colored flame, bonfire, tropical beach (each video is 3 minutes and loops seamlessly)
・Silent mode: no sound — vibration alone tells you when to inhale, hold, and exhale
・New "Bonfire" breathing sound (crackling wood and wind guide your breath)
・Simplified to three tabs (Meditate / Wave / Log). Wisdom cards now live under "Today's wisdom" in the Log tab

### 1.5.1 — 2026-10-10

Improved the "Wave" breathing sound: the hold is now a steady, unbroken surf, and the exhale is a single wave that recedes smoothly.

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## More apps by Takeaki Hashimoto

- [NeckGuard: Text Neck Monitor](https://appshunter.io/ios/app/neckguard-text-neck-monitor/id6775720580)
- [DiaryQ](https://appshunter.io/ios/app/diaryq/id6799314094)
- [TidyQ: Seal Unused Apps](https://appshunter.io/ios/app/tidyq-seal-unused-apps/id6802327253)
- [Araya: Buddhist Meditation](https://appshunter.io/ios/app/araya-buddhist-meditation/id6802515797)
- [MapQ](https://appshunter.io/ios/app/mapq/id6803341464)

All apps by Takeaki Hashimoto: https://appshunter.io/developer/6775720582

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-29.*