I need to develop this simple math calculation ( +,-,x,/ ) speed games with timing for iphone and ipad 1. 3 x levels ( easy, normal & hard ) 1.1 able to select +,-,x or / 1.2 show number button for entering the digits 1.3 need a enter and backspace button 2… (Budget: $250-$750 USD, Jobs: iPad, iPhone, Mobile Phone)
