Hinge focuses on common connections that you and a potential partner share on Facebook. Which is great if you trust the judgment of your friends and family.
Of course, some of us are trying to meet new people, far removed from our everyday lives. (Hinge may have come to understand that, since you no longer need Facebook to sign up.) The app also asks questions to help you match your interests with better connections, which can be a plus for serious relationship seekers.