My 2nd grader has been using Redbird Math since January. She seems to like it but I would love it to be more flexible. We are not in US so she has learned things in very different order than Redbird presents. My biggest complaint is that with Redbird you can not choose what your child needs to learn, they have to progress in order. I also feel it demands lot of parental teaching, for me it seems that it just presents problems and you either know it or not, no real lessons (or maybe I have not figured it out). So I try to sit with DD when she starts so I know if I need to teach her something before.
We have also tried Khan academy. I think it teaches better but the problems are too simple. The same lesson seems to have harder problems on Redbird.
We have not noticed any bugs.
