Stats, if your current program works for you, not sure why you're looking at gamechanger.
Bottom line, it is a very good scoring program for most team needs up thru high school. Most of the common scorekeeping requirements are readily available. Some of the odd ones take some time to figure out. As for costs, the app is free. It allows you to invite other's to "watch" the game and get stats for a small fee.
As to your specific issue, if you tap on the runner on first it will give you the pick off option. As I recall, there is a small glitch if the PO is before the first pitch -- then you have to use caught stealing. Good luck.