Transit Tracker is the official app of the Metropolitan Transportation Authority of New York City, the agency that is in charge of the city's public transportation network.

It is a tool that allows you to track the location of all MTA buses and subways in real-time.

You can also use the app to track alerts for the routes you care about, so you will receive a notification when a vehicle is about to arrive or depart from a stop that you have defined.

This tool can also help you to find out the location of all public transportation stations in the city.

Transit Tracker is a free app that works on Android devices.