If you want to challenge your learnings, you might want to consider downloading this application named TRIVIA STAR Quiz Games Offline. This application has different levels for you once you progress and successfully answer different questions. This game has various categories for you to choose from. Playing quiz and trivia games lets you learn a lot more. 

However, if you want to know the answer to a question, especially now that you are in a challenging level, you can easily do so because this game offers hints for you. The best thing about this game is that this is completely free and can be played without using internet connection. With this feature, you can open this application anytime, anywhere.