AppMarketSpy › Health & Fitness › O2CO2
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App info
- Developer
- ELIOTT ROMAIN-SAVARD
- Category
- Health & Fitness
- Released
- Sep 22, 2026
- Version
- 1.4.0 (Oct 15, 2026)
- Price
- Free
- Size
- 353.3 MB
- Requires
- iOS 15.1
- Age rating
- 9+
- Languages
- English
In-app purchases
noneCurrent prices, App Store US.
About O2CO2
Take a moment to breathe with O2CO2. Follow visual guides, sound cues and instructions in English or French to practise at your own pace. START FOR FREE • Cardiac Coherence in Balance mode: inhale for 5 seconds / exhale for 5 seconds, with adjustable session duration. • Guided Breathing: 3 loops of 24 breaths, at Relax pace, with a male voice. • Sound, music and volume choices in the included exercises. • Share your results at the end of a Guided Breathing session. • Exercise guides and access to the Masterclass, free for everyone. EXPLORE MORE WITH PREMIUM Both Premium plans include the same features: • Six additional exercises: Box Breathing, Sleep Breathing, Strengthen, Breathing 1:2, Alternate Nostril Breathing and Bee Breathing. • Every Guided Breathing setting: 1–15 loops or continuous mode, 8–96 breaths per loop, three paces, and male or female voice. • Four Cardiac Coherence…
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