Hi, yes there is such an app: Gym Genius. You can find it by going to All Apps - pressing it - click the search icon on top of the screen on the right side and you will see a new search bar. Press on the left side next to the search icon and type "Crossfit" and you will get this app. Only negative issue of this app is that you have to pay for it, but it's designed to perform Gym, Yoga and Crossfit workouts. Adviced that to someone else and he bought that immediately. Good luck!!
