Create a simple multiplication math game for my son

I want a very simple multiplication game for my son to play against his friends on his iPad. - a one to four player game - with questions covering the 12 times tables - it will need - - a menu screen with title and choice of number of players - a second menu screen that chooses which times table to cover. E.g. 3 times table - four different layouts for 1, 2, 3, 4 game play. - between 3 to 12 buttons on the gameplay page depending on number of players - A question generator (obviously there will only be 124 questions in total) - a random answer generator ( each player will be given 3 possible answers, 2 will be incorrect) - when a correct answer button is pressed the other buttons are disabled. - one to three small images (depending on player number) must appear after a question is answered - after a set number of questions a winner will be announced with the choice to play again or return to menu Someone with basic graphic design would be preferable as I would prefer to give rough sketches of the pages and graphics.