Meh?!?
There aren't enough questions for each level. So you keep repeating the same questions. On some of the True/False and fill in the answer, the right answer would be helpful. A lot of the questions are worded in a strange way making them hard to understand. Then the mistakes: Spelled prophet as profet, Which artist is known for his self-portraits? The right answer Rembrandt is correct. However one of the other answers, Van Gogh would also be correct. Matisse was a Fauvist, but also a Post-Impressionist, both possible answers. These people don't know how to write the questions nor check for accuracy.