A much needed app in need of some improvements, but definitely worth the price as it is. The timer seems to stop once the auto lock is activated, so well see if there is a fix for that. Some different sounds were just added which was my number one gripe, so many thanks to the developer. This is a great app for workouts, stretches, etc. Id love to see a variable round times option where you can set a bunch of different times for each round/rest period etc. For example: 1st round 2:00, 2nd round 4:00, 3rd 5:00 etc etc, then just loop back to the first round once it done one pass through. Either way, if you workout at all, I recommend buying this app.