Are there mobile apps for an iPhone 4 that can walk me through Frankfurt and other German places. And by walk through, I mean guiding me to the places I need to go, showing what trains I need to catch, buses, and so on.
I know GPS programs, basically do that, but I wanted something more "tourist", that would me show nice places, the times of buses, that would make recommendations and also in English, since I don't speak German.