Train smarter with HIIT Addict.
Simple & advanced interval training for everyone. Intervals, tabata, circuits, EMOM, indoor cycling (with trainer controls), and more.
Not just another interval timer.
HIIT Addict is unique in the interval timer space; Colored visualization blocks let you see your entire workout at a glance — where you are, what's coming up, how hard, and for how long.
Visual Interval Timeline
See the shape/profile of your entire session even before you start. Block height & color = intensity, block width = duration. Pace your workouts better.
Structured Workouts for Cyclists
Perform structured cycling workouts similar to expensive platforms like Zwift and TrainerRoad. Full trainer control with ERG mode. Choose curated workouts for VO2 max, Threshold, Sweet Spot, Endurance, and more. New workouts are added regularly, or create your own custom workouts.
Supercharged YouTube Workouts
Curated YouTube workouts get the same colored visualization blocks as your timers. See the structure before you start, and follow along in real time as you work out.
For all types of intervals
Perfect for any interval or time-based workout. Norwegian 4x4's, HIIT (High-Intensity Interval Training), SIT (Sprint Interval Training), indoor turbo trainer bike training, Tabata, VO2 Max, EMOMs, circuits, and more.
Curated Workout Library
Browse a growing library of curated workouts (timers and YouTube videos). Add them to your own collection for quick access and modifications.
Who is HIIT Addict for?
For anyone who trains in timed blocks. From simple intervals to complex circuits, EMOM, Tabata, structured indoor cycling, and more.
For users who want visual clarity.
- See your workout structure at a glance with a clear, colored blocks.
- Simple work/rest intervals are clearly displayed in differing heights.
- If you set the "effort level" for an interval, it is indicated by height and color. Warmer colors indicate higher effort.
- This is a major differentiator from other interval apps.
For advanced power-users
- Unlock extensive customization for advanced training
- Chain together a mix of block types (work/rest intervals, warmup, cooldown, rest, circuits, EMOMs, and custom).
- Set optional desired effort targets (RPE, HR Zone, FTP %, or Watts).
- Fine tune with a wide range of advanced settings.
For Minimalist Users
- Create simple work/rest intervals if that is all you need.
- Advanced options can be hidden for a cleaner editing experience.
- Perfect for simple work/rest (on/off) intervals without the fuss.
For Indoor Cyclists
- Full smart trainer (bike) integration with automatic ERG Mode power control.
- Execute complex interval blocks on the bike.
- Growing library of curated cycling workouts.
- Affordable alternative to Zwift and TrainerRoad
- General protocols: VO2 Max, Tabata, HIIT, SIT, Norwegian 4x4,
- Cycling specific protocols: Sweet Spot, Threshold, Endurance, and more,
- Enable "Gameification" if connected to a smart trainer. Earn up to 3 stars per level by keeping accurate to power targets.
For YouTube Workout Enthusiasts*
- Curated YouTube library with colored workout visualizations.
- See your entire workout mapped under the video.
- Know what is coming, how hard to push, and for how long.
- New workouts curated regularly in the Discover screen.
- Note: Most curated videos are cycling-specific.
For Heart Rate Monitor Users
- Connect a compatible HR strap via Bluetooth for live monitoring.
- Track heart rate zones throughout the session.
- Automatically save average, max, and time-in-zone stats.
- Review progress directly in your workout notes.
For users who want curated content
- Discover curated timers and YouTube workouts.
- YouTube workouts include full segment visualizations.
- Add items to your personal collection for faster access & easy customization.
- Choose curated workouts for: HIIT, Circuit training, EMOM, VO2 Max, Tabata, Indoor cycling (turbo/smart bike), and much more
Contact Us
Have a question or some feedback? We'd love to hear from you.