City Transit
for the iPhone and iPod Touch
CityTransit is a comprehensive guide to traveling through New York City. It includes official subway maps licensed from NYC's MTA, line data, a GPS-based station finder and live service advisories. An expandable architecture will allow the future download of bus maps, commuter rail lines and more.
-Integrates with the Maps Application to show nearest stations
-Live service advisories from the MTA website

New for version 1.02:

-New super high resolution Subway and Bus maps
-Cross street and handicap data added to individual line view