Tinder sues threesome app rival 3nder

Two's company but three's a crowd according to dating app Tinder, which has launched a legal bid to kill off a rival app aimed at people looking for threesomes. Tinder, owned by global dating firm Match Group, is alleging trademark infringement in the high court against 3nder, an independent app for non-monogamous couples and their potential partners. It wants its smaller competitor to shut down and erase its presence from the web entirely to avoid "confusion" between the two apps, claiming the alleged similarity gives 3nder an "unfair advantage". But 3nder launched its fightback in bizarre fashion on Monday, calling on its users to send Tinder pictures of their socks via Twitter, using the hashtag #TinderSuckMySocks. Founder Dimo Trifonov vowed to fight Tinder, which he accused of "loading a nuclear weapon" against his firm, which employs just eight people.