Relic Castle

I've recently been working on a feature that let's you access the PC via the menu. A user (credit to MGriffin) and I also have made it so that this feature doesn't let you heal your Pokemon when storing them in the PC so that players can't exploit the feature to heal the team without using Potions. But, instead of making it a menu feature, I want it to be a Pokegear App. I'm a noob at scripting so if someone could explain step by step how to do it I'd really appreciate it. Thanks in advance!
I'll leave you the Scripts.rxdata so that you can check out the modified PC script (make sure to look in PScreen_PauseMenu, PScreen_PC and Follow Pokemon):
https://www.dropbox.com/s/brgg0ejh08syidl/1523433213520_Scripts.rxdata?dl=0