All free naked web dating
Happn, in particular, uses Facebook accounts for data exchange with the server.
With minimal effort, anyone can find out the names and surnames of Happn users and other info from their Facebook profiles.
If someone wants to know your whereabouts, six of the nine apps will lend a hand.
Only Ok Cupid, Bumble, and Badoo keep user location data under lock and key.
Such data is not only viewable, but also modifiable.