Kokyu: Diver Companion
Kubicle LLC Health & Fitness iPhoneiPadiPod touch
Kokyu: Diver Companion is a free Health & Fitness app for iPhone and iPad by Kubicle LLC. Rated 5.0/5 from 5 ratings. Requires iOS 15.1.
- Rating
- 5.0
- 5 ratings
- Price
- Free
- on the App Store
- Size
- 164 MB
- Age 4+
- Updated
- Feb 3
- 2026 · v1.4.1
Screenshots
About Kokyu: Diver Companion
Kokyu is an apnea and breath-hold training app for freediving, spearfishing, surf survival, and CO₂/O₂ table practice. Build lung capacity, improve breath-hold control, and progress with guided CO₂ and O₂ sessions tailored to your level. Train with guided CO₂ and O₂ tables, track your progress, and develop the calm and control needed for longer, more efficient breath-holds. Key Features: • Guided CO₂ and O₂ table sessions • Customizable breath-hold routines • Audio and haptic cues for hands-free training • Progress tracking and streaks • Designed for freedivers, surfers, athletes, and beginners Support: • Privacy Policy: https://docs.kubicle.studio/kokyu-privacy • Terms and Conditions: https://docs.kubicle.studio/kokyu-terms • EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Acknowledgment: • Circle Water Splash by Vecteezy.com
Ratings & reviews
5.0
5 ratings
What’s new
Version 1.4.1 · Updated February 3, 2026
We’ve held our breath for this update - built to help you train smarter and push your limits.
App privacy
The developer, Kubicle LLC, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Contact Info: Email Address, Name
- Identifiers: User ID
Used for: App Functionality
Alternatives to Kokyu: Diver Companion
Looking for apps like Kokyu: Diver Companion? Here are 6 similar apps on the App Store. The highest rated is ApneaLab: Breath & Mind (5.0/5), and 5 of the 6 are free to download.
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ApneaLab: Breath & Mind
5.0
-
Apnea & Freediving Breath Hold
-
Apnea Trainer: Nea
4.9
-
Stamina Apnea Trainer: ApneaX
4.0
-
BreatheDeep: Apnea Trainer
5.0
-
Freediver logbook
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Kokyu: Diver Companion | 5.0 / 5 (5 ratings) | Free | February 3, 2026 | |
| ApneaLab: Breath & Mind | 5.0 / 5 (1) | Free | Sep 24, 2026 | Compare |
| Apnea & Freediving Breath Hold | – | Free | Jul 29, 2026 | Compare |
| Apnea Trainer: Nea | 4.9 / 5 (13) | Free | Oct 20, 2025 | Compare |
| Stamina Apnea Trainer: ApneaX | 4.0 / 5 (2) | Free | Nov 4, 2025 | Compare |
| BreatheDeep: Apnea Trainer | 5.0 / 5 (2) | Free | Oct 8, 2025 | Compare |
| Freediver logbook | – | 1.99 USD | Sep 17, 2026 | Compare |