Tokyo subway iPhone apps:
http://www.presselite.com/iphone/tokyosubwayforipad/
MTA Android app SchedNYC:
play.google.com/store/apps/details?id=com.knickerbockerapps.schednyc&hl=en
MTA App center:
http://www.mta.info/apps/
MTA working on implementing real-time data feed for subway:
groups.google.com/forum/?fromgroups=#!topic/mtadeveloperresources/0KiNuapVLhk
