It was only a question of time since Google Earth will be available on the iPhone. Now it is available as free download form the iTunes App Store.
Even if Google is promoting their own handset platform (Android) the is a strong relation to Apples and the iPhone. Now they have developed a own customized application of Google Earth. The functionality is quite similar to the desktop version. Of course the interface is optimized for the touch screen and the sensors. The following videos shows how to interact with Google Earth on an iPhone.

The software can also be used for the iPod touch.

[via derStandard.at]