It works!

I recommended this app to a few of my tutees two weeks ago, asking them to use it 5-10 min a day, and their fluency has already improved! They say they are using it, and i believe them. This app is basically digital math fact flashcards, but in a much more palatable, convenient format. Once the kids master multiplication facts, they can move on to the division facts, etc.

MathAffinity about Mental Math Cards Games & Tips, v1.5.2