Simple iPhone and iPad game

We have designed a simple iPhone and iPad game we would like creating. We have written a detailed specification and just need someone to put it together in X-Code and Objective C for release onto the app store. The game itself is very simple and is driven by a database of words/sentences which we have created already. It is based on questions and answers. There is a scoring algorithm which we have developed and needs building into the app (points for correct answers etc). The game is single player but needs to be connected to the game centre for recording of high scores/leaderboard etc. The game only uses about 5 different screens which require no 3D or animation - just all simple buttons and gestures. We will provide the logo and 'style' for the game but will require the developer to build the graphics for buttons and backgrounds etc. Please send me some examples of games you have built and any relevant experience. We will require developer to discuss the game on skype with us and sign a Non-Disclosure Agreement before starting. Thank you.