Google Earth includes the ability to view maps created on your desktop computer on your iOS device, which is a nice idea. Google Street View support is included too, allowing you to get a close-up view of individual streets. There's also support for 3D views of certain cities.
These can be added as layers, so lots of information can be overlayed on a map at once. Google Earth for iOS has a facility for perusing Places, Businesses, Wikipedia articles and geo-tagged Panoramic photos. However, there's no way to drop a pin in a certain point and get directions from/to there. You can visualize the route in the map depending on if you're traveling by car, on foot, public transport, or bicycle. You can then get step-by-step instructions in the pop-up window. They can actually be accessed by searching 'From start point to destination' in the search box. It's not immediately obvious where to find directions. Getting directions in Google Earth for iOS from point A to point B is much less easy than apps like Google Maps and Apple's own Maps app. You can search for addresses anywhere in the World, as you would with the desktop version. It can detect your current location and automatically centers the map on this point when you hit the Location icon. Google Earth for iPhone is great for finding your way around the planet.
