Zone 2 AI: Vo2 Max & Endurance

Zone2AI is a precision training app for building endurance, improving VO₂ Max, and supporting long-term health. It analyzes Apple Health workout data to validate true Zone 2 sessions, creates personalized weekly prescriptions, and tracks progress toward a 180–240 minute weekly benchmark.

Use Apple Watch haptics to stay in your target heart rate range, unlock guided Norwegian 4x4 HIIT workouts, and monitor your Zone2AI Power Score, fitness age, predicted VO₂ Max, and future training trajectory. With support for Apple Watch, Polar, Garmin, Strava, and WHOOP through Apple Health, Zone2AI provides private, data-driven insights without ads or selling personal data.