Everyone is different with different needs. Normal online systems have the same preset questions for everyone. Our courses use an unique AI algorithm that generates your next question depending on your previous results.

It is just like having your own private tutor.

Every time you answer a question, you get Immediate feedback, so no need to spend time answering X or more questions before getting your results.

The unique Duo algorithm is constantly analysising your answers and building your personal strengths and weaknesses profile.

Focus your studies by reading about that topic or by taking a small test of questions only from that area. I&F is updated after every question.