We've been happy using CoPilot RV for the past couple of years. Be sure you have an iPad with cellular capability so it has the GPS receiver. You don't need to have an active cell plan to use CoPilot. The entire map database can be loaded onto the iPad. The database updates can be done over a wifi connection.
Art
Art & Barbara 2016 Tiffin AB 37AP 2011 Jeep Grand Cherokee