Tabata & HIIT Timer vs Intervall

PEAKVO2 is a VO2 max training app built around the interval protocols that actually move the needle: Norwegian 4x4, Tabata, HIIT 30/30, and more. Pick a workout, press start, and the app guides you through every phase: warm-up, work intervals, recovery, and cooldown. Why VO2 max? VO2 max is the single best predictor of cardiovascular fitness and long-term health. Improving it doesn't require guesswork, it requires the right intervals, done consistently. PEAKVO2 gives you both. What's included: 24 science-backed interval protocols, including the Norwegian 4x4, Tabata, and HIIT 30/30 Build your own custom interval workouts Color-coded workout timer with automatic phase transitions Activity tracking with streak, year in review, and training minutes Works with running, cycling, rowing, and indoor cardio Free to start. 4 workouts are yours forever — no strings attached. Unlock all protocols, custom workouts, and full activity tracking with a subscription or one-time lifetime purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Intervall is a precise interval timer for training sessions on iPhone and Apple Watch. Build custom workouts from intervals, repeats, and rests, then run them with a clear timer designed to stay legible during movement. Features: • Build custom interval workouts with sets, repeats, and rest periods • Save workouts and return to them anytime • Run workouts on iPhone with large, readable timer controls • Mirror the session on Apple Watch • Control play, pause, and skipping from your watch • View live heart rate when a fresh reading is available from Apple Watch Intervall is suited to HIIT, circuits, mobility work, cardio intervals, strength blocks, and other structured workouts. Health and Apple Watch: The Watch companion can supply live heart rate during a workout. Without a Watch reading, the heart rate display stays hidden. When you run a workout on iPhone without the Watch, Intervall can save it to Apple Health.