Zoosk is a leader in the dating app space, as they were one of the first ones on the scene. Their integration with Facebook and Google+ makes for quick and easy signup because you won’t have to input your information and pictures — they’ll do it for you. Then you’ll be able to search for matches, introduce yourself as well as have the app do the introductions, and chat all for free.
Changes in the last year have made OkCupid a bit more like Tinder, focusing more on swiping and eliminating the ability to message a user without matching with them first. You can still send a message, it just won't show up in the recipient's inbox unless you match. Because who doesn't love sending a thoughtful message to someone who might never see it? However, OkCupid has pointed out that these changes did help lower the number of offensive messages users received, which might not be the worst thing.
Sometimes, half the battle of finding a willing hookup buddy involves proximity. Even when you're filtering through matches that are extremely close to you, the inconveniences of city transportation can thwart your best efforts at sealing the deal. Enter Happn, an app that connects matches based on the places you both frequent (the gimmick being that you both could have, if the timing were right, passed one another on the street at some point without knowing it). While this isn't strictly a hookup app, taking advantage of a platform that curates your matches based on locations that you frequent makes for a convenient way to facilitate meeting somewhere that's centrally located and convenient for both of you.