Math Booster play online

Hi, I have a friend who have a child about 7 years old....he was very anxious that his child was not having good grades...he told me that he usually use phone to play games..and this is effecting his studies..and brain development so i have come up with a decent idea for those kids who spent time using cell phone. Now from this app they can take advantage which would be very useful for developing their brain. Now my friend is relieved because his child will not waste his time on unnecessary stuff.

Our app is quite like a mathematics game in which you gain points it also has difficulty levels according to child's grade