Hi
Coaches Eye for the iPhone is a fantastic app. I’ve reviewed it on another forum here
https://s4.zetaboards.com/newpersonalbest/topic/9485086/1/#new
(I have no links to the app, just as a coach I think it is great and use it pretty much every session)
I have been desperately trying to find a repeating countdown timer that can be set to tenths of a second, but I can’t find one. If you come across one in your own search I’d be very grateful if you could post up.