Oh man, wait 'til ya get over to Seoul/HK/Tokyo/<insert Asian megacity>. In Seoul particularly (maybe others, I only lived here), the government has opened hundreds to thousands of public APIs (e.g. transit; bus/subway current locations, timetables, routes, etc) for public consumption and there's now a ton of different apps to serve different needs and you're free to build your own if none suit you. Even nicer is that they've centralized all of it so you can sign up and manage access to all these APIs via a single platform.
For the interested: http://data.seoul.go.kr/