Transform your breath control and optimize your oxygen efficiency with PeakO₂, the ultimate app for breath-hold and respiratory training. Designed for freedivers, athletes, meditators, and anyone seeking better physical and mental endurance, PeakO₂ helps you master oxygen efficiency through structured, customizable exercises.

Key Features

Personalized O₂ Training Plans
• Customize your breath-hold start time
• Increment hold durations as you progress
• Set rest intervals and cooldown periods

Guided Breath-Hold Sessions
• Step-by-step visual and audio cues for a seamless experience
• Clear progress animations for focus and consistency

Track Your Progress
• Monitor your longest breath-hold and total training time
• Build streaks and stay motivated with performance milestones

Beautiful, Intuitive Design
• Minimalist interface to keep you focused during training
• Calm visuals for a relaxing, distraction-free experience

Perfect for All Levels
Whether you’re a beginner building breath control, a swimmer, a freediver, or someone improving focus through breath work, O₂ Trainer adapts to your pace.


Breathe smarter. Train better. Download PeakO₂ today and begin your journey to mastering your breath.

Terms and pricing:
The annual subscription fee is $99.99 USD, offering you unlimited access to exclusive features as long as your subscription is active. This subscription renews automatically, with the charge being applied to your iTunes account upon confirmation of your initial purchase. To avoid automatic renewal, you can disable the auto-renewal feature in your Account Settings at least 24 hours before the end of the current subscription period.

For more information, please refer to our terms of service available at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ or privacy policy on https://magnetic-cement-d48.notion.site/Privacy-Policy-for-PeakO-iOS-App-15f9cea87bdb80cc8b2de5df98cd8d3c