This is an app we've recently purchased to help our kids with their math skills. Kade loves it. He's really taken to adding. Mat uses it to help her remember multiplication. She doesn't love it because it's "hard work". I don't believe Meg has used it yet. Mickey tried it out to see what he could remember, math wise. I think it's pretty neat. You can pull up a "chalkboard" to work out a problem. I can also change the setting (skill level) for the quizzes for each child. It's totally worth it for a few dollars.