i dont get how this is a good app

Question

The instructions are okay, they dont tell you why you. Somtime shat you learn doesnt match the question

Answer 1

When I took lessons, I noticed a few items out of order.

At the time, I did not realize Menu | Feedback was there / would help, and I have since forgotten the exact items.

If you have just seen something, they do fix things in response to Feedback.