Ever since joining STEEM, I've considered writing an app to access it more easily; not that a web page isn't easy, but I can see the point of the OP: mobile is the (likely) future. As a recent convert to the Agile development framework, I would likely start out with a simple browser, then add post, wallet, et cetera. My platform is iOS, as that is my phone/tablet environment, plus I Helped Kickstart a Udemy course on Swift programming, so between the two, it is the logical target for me.