Swipe. Swipe. Swipe. Gabrielle, 19, into cheese. Mohammed, 26, always on time. Eddy, 32, has a profile picture that’s a caricature of himself and insists he is both “healthy” and likes nightclubs. Whoomies, the app they’re on, isn’t really like Tinder, but it’s among a slew of apps that have sprung up in the past five years worldwide that use the swipe feature as a gateway drug for those accustomed to the functionality of the world’s best-worst dating app.