I'd rather just use the retroarch app. Its way easier and understandable. It also doesn't start up with a generic 2014 youtube intro with the application name in it. And its also easier to uninstall, rather than retrobat. Retrobat does not have a uninstall file so you can't uninstall it through the control center or manually find the uninstall file in the file location; because it's not there:/
Edit: it also takes up 2 gigs on ur hard drive, which either I missed, or they weren't very clear about.