If you’re familiar with GPS technology then you will find yourself instantly familiar with > NAVIGON MobileNavigator for the iPhone . It's a $79.99 app that acts as a fully-featured GPS unit complete with voice street announcements , route planning and points of interest. You can even download additional features for the app like Panorama 3D Street View which will show you street topography or TrafficLive that will tell you about upcoming congestion in traffic and find you alternate routes.