Sounds to me like the original poster is really more interested in Grade information than actual elevation information ( and there are a lot of elevation apps available ). I like AllStays Camp & RV app which has a huge amount of selectable filters and choices available. The map readily shows highway grades on the map routes .... which I believe rely on Google Maps for the basis. It takes some practice to learn to use all the filtering available, but sure is worth it for one all in one app for RVing needs.