CharmPass is a travel & local app by MTA IT with 100,000+ downloads (about 334K estimated). +2.1K installs in the last 7 days. Rated 4.4 from 3.7K ratings. Released Sep 26, 2018. Install growth, rank history, SDKs and ad networks.
From the store listing: “The official mobile ticketing app from MDOT MTA!”