Good suggestion. For both the web site and the app I have the same avoids: Ferries and Unpaved Roads.
In the app settings > Navigation, I've chosen RV LIFE Maps instead of the other three options (Apple Maps, Google Maps, Waze).
When it shows me that curve-riddled option, it says "RV Friendly Route" at the bottom. Um, nope.
I emailed RVTrip Wizard support the same thing with the same screen shots. They said something strange:
RV Trip Wizard and RVLife use different routing engines to determine your route. RVLife does not always suggest a route that is RV-friendly, whereas RV Trip Wizard can be set to specifically suggest an RV-safe route. You can, however, set up your desired route using RV Trip Wizard, then sync that trip with the RV Life app:
In the RV Life app, go to the Profile & Account tab, sign out, then sign in again using the same username & password as rvtripwizard.com.
You should not have to do this more than once.
Your trips will then sync to the app.
So I synced the trips, but then ... why not just go to rvtripwizard.com on my mobile device, why use the app?
I will write support back and ask them to note the app's big 'ol "RV Friendly Route" label at the bottom of the suggested route. lol ...