Intervals lite

When you can no longer remember which repetition or which set you were doing, it's time to get Intervals Lite. Intervals Lite tracks repetitions, rest times, and sets. Create your own workouts and have a history of when you did each exercise (or record to Apple Health). Also prompts for repetitions or time remaining, for example, "3 more" or "30 seconds remaining". And it's free, with no in-app purchases.