Interval timer is a free timer application, you can set as the classic timer, TABATA or custom timer (box, mma and others). It is designet for sport activity as well as for other activities. - simple interface and design of app Interval timer, - setting up prepare time, work and rest time, cycles, as wel as you can set up your own cutsom timer - setting sounds for each part of timer - setting volume - setting colors for each part of timer - setting name of each part of timer (in custom timer section) ...Simply simple....just install Interval timer, set up, click and train or use:-) Interval timer is for everyday use.