We are 6+ years expert team in game development. We can finish this game very fast with quality.
Please, check our previous games: https://itunes.apple.com/us/developer/manish-gupta/id892354135
Please, feel freePlus
I can make an app to change the Mac desktop automatically, I don't think it's possibly for the iPhone without some hacking.
I've been developing for Mac since 2009, occasionally publishing to the app storePlus