The TomTom Garmin Android story.

Turn by Turn Navigation GPS devices for cars have been the main business for GPS companies such as TomTom and Garmin for several years. Both companies realised that having a GPS device in your car (a popular christmas present two years ago) and a also owning a large screen mobile device was a bit of a duplication. So they made App versions of their turn by turn products. TomTom sells its Turn by Turn UK and Ireland app on the iPhone app store for £59.99.

And so everything was happy in the GPS company garden.

But then:

Google released a turn by turn app for


On Google Android devices!

This is what has happened to share prices: