GPS specialist Navmii has launched Navfree a free iPhone satnav app, featuring turn-by-turn directions.
Dedicated sat nav manufacturers are increasingly under threat from free and low-cost mobile navigation apps, with new app skobbler announcing this week that it has been downloaded 72,000 times since launch in the UK last month.
A new $8 billion upgrade plan will mean that GPS location accuracy is soon to be improved to within a metre.
TomTom has updated its iPhone app with a number of new features, including live traffic updates, local Google searches and better overall integration with the iPhone and the iPod functions on the device.
Market-leading satnav brand TomTom is set to offer free traffic information and map updates on selected models of its in-car navigation devices later in 2010.