Hi, I use the Sygic GPS on my x10. It is the version 11.
When you install the App it creates 2 icons among your Apps:
Sygic - the main GPS navigation app Sygic Downloader - Used to download the maps so you can use it offline.
Before using the navaigation app you must connect to Wifi, open Sygic Downloader and select the maps you want. Once it is done downloading the maps you can use navigation app.
Sygic is not free it gives you a 7 day trial, after that I think the App will not open.