Before the online dating app Tinder was even an idea, Grindr was already a powerful force in the gay community. Similar to Tinder, Grindr is a simple smartphone app that connects mostly gay people with others in their area who want to hookup. After his video where he joins Tinder went viral, Conan O’Brien was pressured to also take a stab at Grindr, and partied with comedian Billy Eichner.