iOS Question Activity_Touch equivalent?

I'm making an iOS version of an android app I already made. In the android version I use Acivity_Touch to capture screen touches - it's for a sports rep counter that people can just slap their phone screens to increment a count - works great for android, but couldn't see an equivalent for B4i.

Instead I have a label that fills the whole screen and use the Click event. Unfortunately this only triggers if you press with one finger, if I touch with multiple fingers, most of the time the touch doesn't register as a click.

Any suggestions?
Thanks