You can make apps for free, it is publishing them that cost. I think that a sort of condensed version of the site on a mobile app might be beneficial. I have had ideas such as a callout system where you can have a roster of who currently is online on the website or app and you could send them a game invite as well as the type of invite. What i mean by type is if it is a 1v1, 4v4, 8v8 etc. against people within the clan or externally outside the division. There are many other options that could be incorporated to the application, but it will take some time before any of this may come to light.