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Customizable high-intensity interval training timer with presets for Tabata, classic HIIT, and endurance workouts. Audio cues and round tracking.

A fitness app with exercise guides, workout routines, and body stats tracking. Browse exercises by muscle group and build your personal training plan.

Calculate your 5 heart rate training zones using the Karvonen method. Optimize your workouts for fat burn, cardio, and peak performance.

Train your musical ear with jazz chord progressions and interval recognition.

A minimalist fitness timer with reps, cardio, and sparring modes featuring audio cues, lap tracking, and dark/light themes for real-world training.