1:00:46Interval timer - 40 sec rounds / 20 sec rests (including links to 19 workout routines)Dark Raven Wargaming & Time Taker1.7M viewsView & Download
30:16Tabata Timer 20/20 - HIIT Timer 20/20 - Interval Timer 20/20 ( without music )Relax & Timers20.9K viewsView & Download