TomTom has released a navigation app that includes maps just for the US. The application is available at its introductory price of $49.99.

From the app description:

• Get the TomTom navigation app and enjoy smart, easy-to-use, turn-by-turn navigation on your iPhone or iPod touch
• Buy now and get upcoming app updates for free

The introductory price ends on December 28. So, if you’re looking for an inexpensive option from one of the big guys, pick it up soon.

Previously:
10/23/09: TomTom Car Kit Comes to Apple’s Online Store

Update 12/17/09: TomTom has also lowered the price of their U.S. & Canada navigation application until December 28. TomTom U.S. & Canada currently costs $69.99.