What is CallApp?

CallApp is the #1 Caller ID & Block app in the US  and the world’s largest, most comprehensive, unlimited  and FREE caller-id.
CallApp identifies a billion of unknown callers before you pick up the phone and updates your contacts with social pictures & info from: Facebook, LinkedIn, Google Plus, Instagram, Twitter, Foursquare, Whatsapp and all major social networks & web sources…

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