What is a basic port? You can only port an app with a universal language or style. Like Flash or Java on a computer or Phonegap or Cordova on a mobile device. The Bungie app is made specifically for iOS and Android. From the ground up. Only thing they could port is menus and possibly XML files if they used XML at all. So the ease of a "port" doesn't apply here because Bungie optimized their specific app for Android and iOS. The languages aren't universal.