The Best Interval Timer App for iPhone (2026)
Everything you need to build strength, burn fat, and improve your fitness — video-guided bodyweight HIIT with adaptive difficulty, voice coaching, and Strava sync
45+ Video Exercise Demonstrations
Master every movement with crystal-clear video demonstrations for all bodyweight exercises in our library. Each video shows proper form, breathing techniques, and common mistakes to avoid.
- ✓High-quality video from key angles
- ✓Modification options for all fitness levels
- ✓Audio ques to keep you on track
Adaptive Difficulty AI
Hiitology's intelligent algorithm learns from your performance and automatically adjusts workout intensity to match your fitness level. As you get stronger, your workouts evolve with you.
For Beginners
Start with gentler exercises and longer rest periods. The app gradually introduces more challenging movements as you build strength and endurance.
For Advanced Athletes
Push your limits with intense intervals, advanced exercise variations, and minimal rest. The system ensures you're always progressing.
Real-Time Voice Coaching
Stay motivated and on track with intelligent voice guidance throughout your entire workout. Our voice coach announces exercises, counts down intervals, and provides encouraging feedback.
Exercise Cues
Clear announcements of each upcoming exercise so you're always prepared
Interval Timing
Countdown timers for work and rest periods keep you focused
Motivation
Encouraging prompts to push through tough intervals
No Equipment Required
All exercises use only your bodyweight. Train anywhere, anytime - at home, in a hotel, or at the park.
Upper Body
Push-ups, dips, planks
Lower Body
Squats, lunges, jumps
Core
Planks, crunches, twists
Cardio
Burpees, climbers
Intelligent Workout Generator
Never do the same workout twice unless you want to. Our smart generator creates custom HIIT routines based on your goals, available time, and fitness level.
Experience All These Features Today
Download Hiitology and discover how easy and effective HIIT training can be
Download on App Store