The following text is from Apple, but it’s true in every aspect!
Embark NYC Subway makes it easy to get around New York. Embark even works without cellular signal!
– Offline trip planning between subway stations
– Interactive MTA Subway map
– Directions to any address or landmark (internet connection required)
– Tap any station to see upcoming scheduled trains & a street map
– Bookmark a station to save it
– Current delays and diversions
– Push alerts for delays customized to your routes
– Share your trip via Email, SMS or Twitter
For a long time HOPSTOP was the best New York City iPhone subway app, but now it’s embark NYC!
You’ll find it here:
If this link doesn’t work in your country – search for “embark NYC” in iTunes!