[iPhone God App] It was found using the GPS-Compass actually

The best integrated compass and map app for the iPhone! Now even older devices can enjoy having directional markers on your maps!

For users with older iPhones without a built-in compass: this app will determine the direction you are facing based on GPS readings taken while you are moving. The app takes this reading and allows you to see the direction you are heading on a Google map. You can also choose to rotate the map so your direction is always shown straight ahead…this capability was previously only available to 3GS owners with a built in compass!

For newer devices with a built-in compass: this app uses the more accurate hardware to improve the existing compass and map apps on your device by allowing you to see the direction you are facing directly on the map while keeping the top of the map facing north. In other words, the directional cone on the map will rotate, not the map itself, if you like. In addition, you can now easily switch back and forth between the compass and map without exiting and launching multiple apps.

Please note, this app is made to work with the GPS capabilities of the iPhone 3G or 3GS. Models without GPS will probably not work. Models with GPS but without a compass will need to be moving in order for your heading to be determined.