Key tool in the tool belt of any NewYorker
I cant tell you how many times a year I refer to this app. Its especially useful for the service advisories that it downloads. I dont like that the Station Locator always drops you in midtown Manhattan (rather than centering the map on your current location) and Fort Hamilton Parkway is mislabeled on the N Line chart. I would have emailed these feedback points privately but the developer website doesnt offer a feedback link and the developers App Support link in the App Store is broken. So its s great app as long as you dont ask for more than they give you. Such as support.
AIM Fan for Years about
CityTransit - Official NYC Subway Maps, v4.0