Google and Nokia have both launched free turn-by-turn navigation apps: Google Maps Navigation and Ovi Maps respectively. Now iPhone has its own equivalent, although it's not made by Apple.
German firm Skobbler has released its Skobbler Navigation app, which like the apps above is completely free.
The app uses OpenStreetMap as the source of its mapping data, enabling it to cut costs. Before that, the app sold more than 150,000 downloads on the App Store in Germany.
Google and Nokia's decisions to launch free navigatioon were a rock in the pond of GSP navigation, but up to now, iPhone has tended to attract satnav apps with premium price points.
Skobbler Navigation could pick up steam quickly, then, if it delivers a decent experience for users.