Despite New York City virtually revolving around its mass transit system, local subway riders haven't had a way to check the next arrival in real-time, even though some smaller cities already take live transit details for granted. At least some harried commuters can assuage their minds now that the MTA has posted its Subway Time app for iOS users. The title does exactly what it says on the tin, taking advantage of MTA's signalling installations on the 1 through 6 lines (and the 42nd Str