This app pairs with a respiratory muscle trainer to help users measure and improve their breathing strength and performance. It guides users through resisted breathing exercises to enhance respiratory function.





250+ iOS apps curated and reviewed
If you already know PrO2 Fit, this is the deeper bench. 250+ o2fit apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 3.5★ (4) | No | No | Jul 2026 | |
| 2 | Free | 4.8★ (772K) | Yes | Yes | Aug 2026 | |
| 3 | Free | 4.8★ (123K) | Yes | Yes | Aug 2026 | |
| 4 | Free | — | No | No | Jun 2026 | |
| 5 | Free | — | No | No | May 2026 | |
| 6 | Free | 4.9★ (491K) | No | No | Aug 2026 | |
| 7 | Free | — | No | No | May 2026 | |
| 8 | Free | 4.2★ (2.2K) | No | No | Aug 2026 |





This app pairs with a respiratory muscle trainer to help users measure and improve their breathing strength and performance. It guides users through resisted breathing exercises to enhance respiratory function.






This app helps users achieve their weight loss goals by tracking calorie intake, nutrition, and exercise. It offers features like AI-powered meal logging, barcode scanning, and personalized diet plans to simplify the journey to a healthier lifestyle.






This app offers short, effective workouts designed to improve your health. It provides guided exercises with voice and video instructions, suitable for beginners and requiring no equipment. Users can also build custom routines and integrate with Apple Health.






This app offers a science-backed, coach-inspired group workout experience. It allows users to easily book classes, track workout statistics in real-time, and manage their fitness progress. Achieve life-changing results with this streamlined fitness companion.




This app helps you achieve a healthier, more active lifestyle by tracking your physical activity and providing personalized goals. It awards points for moderate and intense exercise, aligning with recommendations from health organizations to improve heart health, sleep, and mental wellbeing.


This app connects fitness professionals with their clients, offering tools for online coaching, personalized training plans, nutrition guidance, and progress tracking. It aims to enhance client engagement and help individuals achieve their health goals through a comprehensive digital experience.








Enhance your audio experience with customizable sound modes and a powerful equalizer. Effortlessly manage multiple Bluetooth devices, update firmware, and control playback. Access detailed information about your headphones and the brand.




This app allows users to monitor vital physiological data, including blood oxygen levels and pulse rate. It also tracks oxygen usage and includes a health assessment questionnaire. Data can be input manually or synced with compatible medical devices.


Connect with friends and family globally through private messaging and high-quality calls. Share moments, documents, and stay in touch across devices, even on slow connections. Your conversations are secured with end-to-end encryption.




Track your daily activity, sleep patterns, and set personal fitness goals. Receive smart notifications and use helpful tools like sedentary reminders and remote camera control. All data is for personal reference and not a substitute for professional medical advice.




Control your AIRO System for guided or self-guided workouts. Adjust oxygen concentration, monitor workout duration, and follow protocol instructions with built-in timers and cool-down periods.