The MobileNavigator for iPhone from Navigon has recently made debut at the Apple App Store. The introductory price for the application is $70 until August 15th.
About MobileNavigator for iPhone:
* no monthly fee – cheaper in the long run
* on-board maps – maps don’t download as you go. You’ll have access to all the maps when you don’t have coverage.
* takes 1.29GB of space on your iPhone
* supports landscape view