Tinder is a geosocial networking and online dating application that allows users to anonymously swipe to like or dislike other profiles based on their photos, a small bio, and common interests. Once two users have "matched," they can exchange messages. It is accessible through a mobile app or a web browser for computers. Tinder operates on a freemium business model. Tinder's primary companion site has been Facebook, as Tinder users were originally required to connect their Facebook profiles to their Tinder accounts for verification and profile details. Using Facebook, Tinder is able to build a user profile with photos that have already been uploaded. Basic information is gathered and the users' social graph is analyzed. Candidates who are most likely to be compatible based on geographical location, number of mutual friends, and common interests are streamed into a list of matches.