If you do a search on the app store for city of heroes you'll find Meeks hero builder. It was last updated May 29, 2012. It includes staff fighting and the newer darkness sets. It fuels my mids addiction on the go. Downside: it shows you powers but you can't build a toon and store it. I usually clown around with builds on scratch paper.
There were two versions (paid and free, both the same but one allowed for donations for further updates).
The main reason I'm asking is does anyone have plans to make an App for city of titans, city if heroes or any of the other successor products in the future?