I initially bought this for my 6 yr old because I already had math lite which I found very good and helpful for my son. I was looking for something new and different but challenging. If you look at most of the reviews and read them carefully (which I didnt at first), you will notice that the ones with good reviews are parents with very young kids who are around 4 years old. The problems are so easy for kids who are older and are multiple choice and the like. If you have a 4 yr old, this might be a good app for you.
jcr2 about KidCalc 7-in-1 Math Fun (Including New Birthday Party and Halloween Themes)