No revenue estimate for PSN — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $2.8K — a different platform, not this one.

Math Fun

Math Fun is amazing fun loving app for everyone. This app will let you learn math in an fun and easy manner while playing. Features -Primarily targeted for kids. -Play & Learn Addition, Subtraction, Division, Multiplication, Counting and Comparison. -In each Category there are 10 Levels. -Suitable for all age group. Get ready to Learn Maths in a Fun way.