Challenger is an iOS universal application for taking quiz based on different category such as general knowledge,technology, sports etc. You can select any category from the list and for each category there are three different levels easy, medium and hard.There will be a timer for each question. If you choose the correct answer you will get 10 points and the answer is wrong you will lose two points. You can see the final score and the full details of quiz with pie diagram in the score page. The recently played users score can also be seen in the score page. You can share your score to your friends via email or Facebook. Enjoy the quiz and update your knowledge.Cheers!!