This is a fantastic app. I have never nevertheless used a HUD naigator before but this one is awesome . Allows you to create a custom layout for the information you want displayed on your Nsf map. Provides voice support for turn by turn directions, and best of all, after you begin navigation, there is a button to "switch HUD" which reverses the screen so you can place it on your dash and see the navy map on the windahield( slightly magnified by the curve of the glass). Its a little difficult to set a destination, but once you have, your eyes never have to leave the road because the display is RIGHT THERE.