Is there an app for GoTitans forum I can download from play store or is it strictly an internet portal?
Yep. I used to use tapatalk, and it was fine, but the mobile version of the forum works better than it did.
You can add this forum to the home screen of an iPhone etc just by choosing "add to homescreen" in the area where you add to favs etc. From that point it will act just like an app..