TomTom has TomTom U.S.A (iTunes Link) in the iTunes App Store for $49.99 for a limited time. Deal expires December 28, 2009. This app turns your iPhone 3G and 3GS in to a full on TomTom GPS unit. It comes with US Maps and features spoken city and street names, advanced lane guidance, TomTom IQ Routes Technology, music controls, full contacts interaction, and a large point of interest database. iPhone 2G and iPod Touch requires a separate hardware add-on.

TomTom also has the TomTom U.S. & Canada (iTunes Link) in the iTunes App Store for $69.99 (99.99 – 30%) for a limited time. This app includes both US and Canada maps.