I did a lot of research when choosing a GPS app and Im very happy I chose this one. Yes, once in a while you have issues with what route it chooses to send you but the same thing can be said for every GPS app out there, free or paid.
The main advantage of this app is the offline maps capability. In northern BC, there are lots of areas between towns with no cell coverage so Apple or Google maps wont help you there folks. And when we traveled down through the U.S., we didnt have to buy a data plan in order to use online maps.
Offline maps and a nice UI make this a great app.
PK Balsh about NAVIGON North America, v2.11