yeah, Scorekeeper truly is awesome. Since it's still in the trialing phase, the loser of the coin toss has to keep both the paper and app, with the winner of the toss only having to keep the app version.
it starts with a virtual coin toss, then whoever wins determines who puts up first just like normal, and you select it on the screen. it keeps track the normal stuff like defensive shots, innings, timeouts, etc. some of the enhancements that I know we have voiced in Memphis were: listing innings per rack as you're keeping the score, timer for timeouts, ability to subtract innings/defensive shots hit on accident, counting skill points to see how close you are to 23 for strategy, just to name a few.
we asked for the timeout timer, and a week later it was on the latest update, so St Louis truly is trying to get it perfect before rolling out to everyone. I can't wait for 9 ball, because I think it will simplify a lot of things.