The easiest way to get around the subway with your iPhone! iTrans features a subway map, easy step-by-step directions, offline service advisories and schedules, and push alerts for delays.
Now iTrans includes entrance/exit data on an easy-to-navigate street map, along with walking directions that tell you the best entrance to use. It even knows which entrances are downtown/uptown only and directs you accordingly. This feature is based on new data sets published by MTA NYC Transit.
Other powerful features in iTrans include alternate routes (see other ways to arrive by using alternate lines) and address book integration (just enter a contact's name to find them). Search the App Store for iTrans to learn more!