Mobile App: Navigate the roads (domestic)
The most easy-to-use of the full GPS navigation apps, Navigon features text-to-speech directions, real-time traffic updates ($24.99 extra), and information about points of interest along your route. Other great features: the ability to set anyone from your address book as your "destination," easy-to-read maps, and 3-D views complete with road signs.
Cost: $79.99 (North America).
Runs On: iPad, iPhone/iPod Touch, Windows Mobile.