My kid is on it, every kid hates it and every teacher hates it. You just can't argue with the pricing. I'm amazed at how bad everything seems to old fashioned paper text books.
Every time I help my son I'm amazed how bad it all is. Horrible tiny screen that looks like is from 2000 and then the software is all designed for some Googler who has 2x 30" 5k displays. The usability is atrocious.