My work:
My most recent made app, a pin ball like physics game (currently being submitted to app store)
my WIP trucking game app, everything besides the truck sprites are dynamically drawn, trucks use shortest distance alogrithm.
Menu of a previous project, the app also has backgrounds according to the user's locations's weather (if its raining, it rains in-app),
on the menu, random colored planets orbit.
One of my first apps, used U.S. Census data to randomly get names
Payment:
I'll quote you how much in total your project will cost. Half will be expected as soon as we move into actual app developing, will be submittable to app store upon being payed in full.