The interval time is the most effective high intensity interval training (HIT/HIIT) timer. IntervalTime is a free, open source, and highly customizable interval training (HIT/HIIT) timer. It is very simple to use and its interface 'gets out of the way', letting you train quickly without fuss. It is customizable and can be used with a wide variety of training protocols, including Tabata, Little, fartlek, and many others.

IntervalTime is designed to help you achieve your exercise goals, whether you are a beginner athlete or you want to lose weight, gain muscle or improve your cardiovascular health. The interval time will keep you motivated, energized, and determined to keep moving and achieve your goals.