Knoobl is a mobile information sharing tool. Users share lectures that they want to tell, information or experiences that they want to convey, in short almost any content via their smart phones or tablets. They can write and draw using their pens or hands and can simultaneously record their voices in a synchronized manner. So the experience resembles listening to a teacher in a classroom or explaining something to your friend while drawing on a piece of paper. Users can enrich this content with pictures and videos. Indexed by keywords, this data will enable other users to reach information rapidly and comfortably. Wouldn’t it be nice to watch a video that has been recorded by one of your friends for a course you missed at school from your tablet while riding on a bus?