A component that you can add to your iPhone application to access all basic features of Google Maps (similar to Android’s MapView). It uses a UIWebView in the background to load the HTML/Javascript version of Google Maps, and offers a set of Objective-C methods that mimic a subset of the original Javascript methods for controlling the map. It currently supports setting the center location, and zooming & panning using the touch interface. You can see it in action here: https://www.youtube.com/watch?v=pCVLifcSkV0

http://code.google.com/p/iphone-google-maps-component/