This app guides you through the scientifically-backed Norwegian 4x4 HIIT protocol to efficiently boost your VO2 Max and cardiovascular health. It offers set-and-forget workouts with visual and audio cues, suitable for all fitness levels.






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Boost VO2 is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.






This app guides you through the scientifically-backed Norwegian 4x4 HIIT protocol to efficiently boost your VO2 Max and cardiovascular health. It offers set-and-forget workouts with visual and audio cues, suitable for all fitness levels.











Improve your cardiovascular fitness with science-backed training protocols and real-time coaching. Track your progress, visualize trends, and receive AI-powered insights to enhance your body's oxygen utilization for better health and longevity.


This app provides science-backed interval training protocols to improve cardiovascular fitness and long-term health. It guides users through warm-ups, work intervals, and cool-downs with customizable timers and activity tracking.


This app analyzes your cardio fitness data from Apple Health using AI to provide personalized insights and actionable tips for improvement. Understand your VO2 max trends, compare yourself to elite levels, and receive tailored advice beyond generic fitness advice.


This app offers a science-backed cardio exercise program designed to improve health and prevent lifestyle diseases. It focuses on efficient workouts, measuring VO2 max with high accuracy, and integrating with popular fitness trackers. A premium subscription unlocks full features.


Track your VO2 max and understand your cardiovascular fitness with real-time data, detailed progress analysis, and instant notifications. Calculate your fitness age and gain personalized insights into your long-term health.


Measure, track, and improve your VO2 Max with a variety of fitness tests and personalized training plans. Features include HIIT and Zone 2 workouts, progress tracking, and integration with Apple Watch and HealthKit.


This app tracks your VO2 max data from Apple Health, providing instant notifications for new readings. It visualizes your fitness trends and offers insights into your biological age based on your cardio health. Stay motivated and informed about your progress.


This app guides you through personalized Zone 2 and high-intensity sprint training protocols to improve mitochondrial efficiency and maximize VO2 Max. It offers real-time feedback, projects future health outcomes, and tracks your progress towards longevity goals.