Turn-by-turn navigation is here for the iPhone, now that GPS firm TomTom's

Turn-by-turn navigation is here for the iPhone, now that GPS firm TomTom's iPhone app is available in the Apple App Store.

The TomTom app costs $99.99 and uses the GPS chip inside the Apple (NASDAQ: AAPL) iPhone 3G and 3G S to provide real-time navigation to users -- essentially folding most of the features of a standalone GPS device into the smartphone.

Key features include both landscape and portrait views, points of interest and 3D and 2D maps. It also includes a signature TomTom feature called IQ Routes, which calculates the shortest way to get somewhere based on the actual road speed as determined from a database of millions of drivers. This takes into account obstacles like traffic spikes during a particular time of day when calculating arrival times and optimal routes.

First announced at the Apple Worldwide Developer's Conference, the TomTom app uses the current version of the company's mobile operating platform for the iPhone, OS 3.0, which debuted June 17.

Get the full story here at InternetNews.com.