IPhone app game development

I have a rough design of a simple game similar to a game called impossible rush (please look on App Store to see full game or see attached photo) if you can make that this isn't going to be much more work. Basically the game involves a ball dropping and you have to touch the square so it lines up with the right colour the more you get right the quicker the balls come down. I want the same but with shapes and a hexagon. I someone on this side to send it to Apple to get it published but I just need the game made.