Write an easy i pad/iPhone app

I need an easy game app made. Basic backround that constantly moves and never ends. 2 modes, single run where once u crash ur turn is over and you get your score ( unless u have purchased 2nd chance which adds 2 scores together)and a big run mode where players can use unlimited continues which are bought or earned through coins collected. Must be able to switch from both modes and not loose the big run mode score. I need a menu, in app purchases and leaderboards and gamecenter, twitter and Facebook sharing. And at the beginning something that pops up and collects some optional contact info, and how would I access this info? Website?