Tinder recently went to war with 3nder, an app designed to help users find some three-person fun. Tinder's primary complaint was the similarity between the two names -- 3nder, evidently, was just too close to Tinder. 3nder disputed this at the time, but now, in what appears to be an effort to duck the thorny legal issues, 3nder has rebranded as "Feeld".