Challenger is an Android 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. You can see the final score 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!!