Interesting facts about Animals, Entertainment, Food & Drink, Geography, History, Literature, Science and Sports (plus a "Random" category that contains facts from all 8 categories). There are thousands of facts with new facts being added constantly.
In addition, there is a weekly quiz of different questions that arent included with the facts. You can sign up to see how you rank compared to other people who took the quiz.
This is a great app for anybody who loves trivia and learning new things.