Google Play Android app mentioned in Twitter App Card.
https://dev.twitter.com/cards/types/app
Mobile
Get access to data on 331,065 websites that are Twitter App Card Android Customers. We know of 83,700 live websites using Twitter App Card Android and an additional 247,365 sites that used Twitter App Card Android historically and 51,502 websites in the United States.
Get a list of 331,065 websites using Twitter App Card Android which includes location information, hosting data, contact details, 83,700 currently live websites and an additional 127,437 domains that redirect to sites in this list. 247,365 sites that used this technology previouslyand 51,502 websites in the United States currently using Twitter App Card Android.
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