App coming spring 2026
Everything you need to run better intervals, track progress, and stay consistent.
HIIT Addict is a 2-in-1 powerhouse: a professional-grade, highly customizable interval timer merged with a "turbo-charged" YouTube workout player. Whether you're building a routine from scratch or following a world-class trainer, you have total control.
Go beyond simple "on/off" timers. Chain together an unlimited number of blocks to create complex pyramids, EMOMs, or custom circuits. Perfectly optimized for cycling cadences, running sprints, or heavy lifting—complete flexibility for any discipline.
With our signature visualization, instantly see a detailed panel showing exactly what's coming up, for how long, and how hard they’ll be. Choose from our curated selection (updated weekly), or build your own with a little effort.
Connect your wearable via Bluetooth to monitor your heart rate live. HIIT Addict tracks your zones throughout the session and automatically saves your average, max, and time-in-zone stats directly to your workout notes for deep progress analysis.
High-intensity training is always better on the big screen. Sync your custom timers and YouTube workouts to our web-optimized dashboard to transform your living room or garage gym. Get the full visual impact of the X-Ray panel and video playback on your TV for an immersive, studio-level experience.
Access our "Discover" page for weekly curated timers and supercharged YouTube workouts. One tap clones them into your personal collection, allowing you to tweak and customize them to fit your specific goals.
Have a question or feedback? Want to be notified when HIIT Addict is ready? Send us a message.