I don't ever use one of those online trip planners while on the drive. That's redundant and cumbersome. The car calculates all the stuff in realtime while you are on the trip.So I'm not quite clear how people use this. You set the nave for your destination in the car I assume and then you use the ABRP app on the phone for the drive as well?
Those online ones are just to do a little pre-planning to see what is going to decently work or not work, get a ballpark approximation of how long the entire thing would take, including charging stops, or to evaluate if you have to go across a larger gap that is not a standard Supercharger-covered interstate.