Bumble also has a BFF feature to help you meet new people, but that's really not the focus of a dating app gallery, so I'll save it for another time.
Originally the app focused on common connections and mutual friends that you and a potential partner shared on Facebook, which was a gimmick I was never sold on. Hinge has designed the app to make user profiles more engaging (and helpful) than on apps like Tinder.
Also because women must message first, Bumble tends to weed out the slightly more insecure males.
However the rate of overly confident males tends to be higher than I've seen on other apps.
Happn matches you with people who are located nearby.
It's a cool concept and helpful for people who want to meet someone in a more organic manner.