I'm using an iPhone now, works ok, but the worst part is zooming in and out so you get an idea ofthe map and deploy troops etc...doubt an app would improove this much at all...maybe if somebody created an app that worked like Bob did would give it the edge...like troup values in dropdown list and make it colour coded for each player.
If you manage to make this app, it would be nice to make it so each phone has it's own accessibility for one designated user, this would cut down on multi's quite a bit.