RV trip wizard is a web-based tool to plan your RV trip. We have used it since 2015 and seen it grow ever since. To describe it is hard without seeing it, they have a 7 day free trial where you use everything they have to offer.
Some of the features;
After you added campgrounds to your trip, you can load a (free) app on your phone or tablet and load in the route you designed. It can be used as an RV GPS! and will plan a safe route to your campground(s)