My Take
There is so much to this app that makes kids want to play it. You have the superhero angle combined with the battles against other bad guys really. I love the underlying problem solving aspect to this app. There are five different games students can play which allows the apps to meet a wide range of needs within a classroom. It's just a really well developed math app.
How I Use It
I use this app during math centers. It helps your high kids extend their problem solving and then it is also great practice with math skills. My students love this app and will play it for hours if I let them.