Countdown timer for various trainings. HIIT Interval Training Timer is an invaluable tool for all interested in workout and training.
It doesn't matter whether you run, use it for cycling, sprint, tabata, weightlifting, hiit, cardio, boxing or martial arts.
Suitable also for lot of "home circuit training" like the ones found on bodyrock! It can also fully substitute your interval timer or other timers you'd otherwise need to carry in gym! The best thing is that this app is always with you, because it's on your phone.