Fantastic

Using it to refresh before going back to school and having to take additional calculus courses. I just started using it and can already tell its going to be perfect for me. I pretty much forgot everything, and navigating around is very easy. I can click a definition and get back to the lesson without worrying about going back to the home screen and scrolling back to where I was. The explanations are also wonderful! Highly recommend

Unicorntits about Calculus FTW - Deep Insight into Solving Calculus Problems