Plain Vanilla, the developers behind QuizUp, has fixed the server side issues that caused data to be transmitted unprotected to the QuizUp servers. An update to the iPhone app should fix issues there. It appears that at least some of the major problems, including data being transmitted unprotected, have been fixed.
Popular trivia game QuizUp appears to have numerous security and privacy issues. The app seems to be sending your information to the devices of other users, including your name, email address, and Facebook ID.
Quizboard for iPhone is a new social trivia game that is like Trivial Pursuit meets Scrabble meets social-gaming. It features a beautiful game board and trivia question from a slew of categories that must be answered quickly, thus keeping you on your toes.