Very useful for 2 reasons

1. You dont need an Internet connection, so it works anywhere in the subway system, and its fast
2. The neighborhood maps have a treasure trove of important NYC buildings and landmarks, along with their proximity to subway exit stairs.

Highly recommended.

If youre looking for directions from A to B, then use Google maps or some other app. Thats not what this app is for. This app is for the fastest way out of a subway station.

Toddamus23 about Exit Strategy NYC Subway Map, v2.6