HQ Trivia CEO and Vine cofounder Colin Kroll has died at the age of 35. Kroll helped create two of the most viral apps of the last decade after getting his start at Yahoo and travel site JetSetter. Here's a look at Kroll's career. Colin Kroll, the cofounder of HQ Trivia and Vine, died on Sunday. He was 35. Kroll was the CEO of viral quiz app HQ Trivia up until his death on Dec.16, and helped create popular video sharing app Vine, which was sold to Twitter in 2012.