David announced Android for now.
IOS does not allow "side loading" of apps. This means you can not simply download apps from any other sources besides the official app store.
Android devices do allow side loading. This means every Android user can install the RuneWild mobile app.
Apple users would have to perform many workaround measures in order to get the app running. For this reason it can be expected that only very few Apple users would ever use the app. This does not compensate the immense work put into creating an iOS game app.
The app would not be allowed in either of the 2 app stores (apple, android) because it is an unauthorized copy of a copyrighted game.