Can Citi Bike NYC app use offline cached maps somehow like Google Maps does? P.S. It seems to be using Google Maps underneath but I'm not sure. Even if it does, as per this Q, apps that use GMaps, ...
I spent almost entire day looking for decent apps for maps (decent = free, up to date, being open-source is a plus). I ended up with TrekBuddy, GoPenS, RMaps, Maverick, OruxMaps (the emphasized ones ...