I have Navfree on my Samsung s2, it is free to download from google play. It has built in camera alert but this facilty doesnt work so try downloading camera alert(separate app). I have linked these so if I open the sat nav the camera alert runs in the background. Both work very well and get used most days, as yet have never missed a camera
I want it for a pc, that will not be connected to internet, not a phone, the pc will only be connected to a printer, to print out address with a map to address, and i would like to be able to do using postcode searches with it.