We do have a few quibbles with Navigon's iPhone implementation, however. For a start, routing options are only accessible once you have planned your destination. So whilst you can choose to calculate routes for a car, motorcycle, lorry, bicycle or pedestrian, this and all global settings only become available once you're already navigating. Verbal directions are also fairly general, merely telling you which way to turn at a junction, rather than explaining exactly the road name you should look out for.
This initial version misses out on some other important functions, too. There are no speed camera locations included, and you can't plan a route with multiple waypoints, although speed limits are indicated and you can add interim destinations to a route you're already travelling on. Also, when listening to music via the iPod abilities of the iPhone, its volume won't be reduced when MobileNavigator is giving voice commands. All these features are due in a free update later in July.
Another update will allegedly bring TMC traffic update interoperability and verbal directions which do indicate road names, but there is no mention of whether this will be a free upgrade or a future new version you have to pay for. MobileNavigator 7 for Windows Mobile also offers weather forecasting and HRS hotel booking widgets, but these aren't included in the iPhone version.
Navigon has managed to beat TomTom to market with the first fully-featured sat-nav software for the iPhone, and MobileNavigator gets the job done adequately. However, it's not exactly replete with capabilities, even compared to the latest Windows Mobile version of the app. Although a lot of the missing features will supposedly be arriving in a free future update, we would still recommend seeing what TomTom has to offer, and how much this will cost, before choosing the Navigon option.