Interval Trainer PRO

This easy-to-use app is Ideal for workouts using heavy bags, speed bags, jump ropes, double-end bags, push-ups, pull-ups, burpees, or other types of interval training(Calisthenics circuit timer, Circuit training, HIIT training, Tabata, Crossfit) at the gym or home. Did I mention it's 100% free, not ads, no in app purchases.