Some interesting features, but not very student friendly.

My Take

Overall, this in not an app that I would regularly use in my classroom. While the app is easy to navigate, and has some interesting features, there are too many areas that I find wanting. Mainly, the topic explanations are not written in a way that is engaging to high school students. The wording is often awkward, and uses too much technical vocabulary. As an experienced math teacher, I even found the explanations and descriptions to be rather dry and un-engaging.