Transit times are extremely useful. In New York City, however, you only get realiable information once you're already in the station. That's not helpful.
A.R.T. aims to help you decide which of the (likely many) stations you're closest to and which have trains arriving the soonest so you can optimize your route.
This iOS app is powered by a simple Node.js express server;
Here's a link to a full demo video
And for those less inclined - a GIF:
