http://iscoresports.com/

I'm scoring softball games where if you have 2 strikes and foul a ball twice it's an out. Can you add an out for a foul ball strike 3 type scenario?

This is not a common rule. I would not see it being very high on a priority list for enhancement.

You can enter a strike swinging and put in a note that it was a foul ball. Or you can select the foul tip option.