I use this app mainly for my interval climbing workouts. Mostly hang boarding. I like that I can program multiple interval sets of high intensity (hang) and low intensity (rest) and label each interval with a reminder of what Im supposed to be doing. This app performs very well, and ability to play music through the app is a definite plus. However, I wish that during the current interval, you could see the interval that will come next. This way there is no hesitation and I dont miss any of the exercise. 4/5 stars because it really is a great app, would be 5/5 with the above addition IMO.
Ben Berg about Interval Timer Pro