What is the best gps navigation App on the IPhone 3?

Open your app Store on your iPhone, located on the home screen. Search for the TomTom in your search box of your app store. Browse your versions of the TomTom app which appear, finding one of the correct version for your country. Tap on your correct version of your TomTom app which you would like to just purchase. Sign in to your iTunes account and then confirm the purchase when it is prompted. Tap the TomTom app button on the home screen when it just finishes downloading. The app button will then show red hands on the white circle against the black background, and the TomTom will be written beneath the button. This is the whole procedure.