http://iscoresports.com/

I've read in the documentation about a game that was delayed by rain, you can freeze the play clock, under the Misc menu on the scoring screen.

I'm running Android ver 4.20.706, don't see the menu option there. Am i blind? or does it not exist on this version, or was it removed?

The rain delay option does not currently exist on the Android version. Just add a comment to the game saying there is a rain delay and exit the scoring screen. When the game resumes, just go back to the scoring screen. The game clock will be wrong, but the umpire is the official timekeeper anyway, so it is just informational.