OxyBoost vs Breather Trainer

OxyBoost is a minimalist breathwork training app for practicing breathing patterns, breath holds, and relaxation. Create adjustable exercises and track your practice over time. Key Features: • Box breathing • O2 / CO2 / Relaxation (no contraction) apnea tables • Customisable exercises with adjustable intervals • History and statistics • Live heart rate and blood oxygen from supported external Bluetooth sensors • Interactive sensor charts with breathing and hold phases • Share exercise by link or QR • Music during exercises, with search, styles and synced favorites • Offline listening for tracks whose artists enable downloads • Voice guidance and subtle notifications • Dark and light theme support • Practice screen customisation • Realtime sync across your devices • Training history and music favorites saved to your account • Sign in with Apple Sensor readings are provided by a compatible external Bluetooth device; OxyBoost does not measure heart rate or blood oxygen using the iPhone itself. The available readings and their accuracy depend on the connected sensor. Readings are displayed and saved as part of your training history and are not intended for diagnosis, treatment, medical decisions, or monitoring the safety of a breath hold. Disclaimer: This app is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or another qualified health provider before starting any breathwork or apnea training and before making medical decisions. Do not disregard medical advice or delay in seeking it because of something you have read in this app. Terms of Use: https://oxyboo.st/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://oxyboo.st/privacy

Breather guides you through breathing training — controlled hyperventilation rounds followed by extended breath holds. How it works: • 30–40 deep breaths, then a full exhale and breath hold • Recovery breath with 15-second hold • Repeat for 3–4 cycles Features: • Voice guidance: breathe in/out, countdowns, hold milestones • Animated breathing circle • Configurable rounds and cycles • Hold time history with personal bests • Monthly session calendar • Optional daily reminder No account. No subscription. No data leaves your device.