Great app. I try to avoid bad weather but when I find myself in changing weather conditions I use it. I used it last week in Boca Raton Florida to route around Hurricane Matthew & make go/no go decisions. I used it this week in Northern California to choose best route dealing with high winds, extremely heavy rains, developing ice & snow while traveling through steep uphill & downhill grades through Sierra Nevada mountain areas. I depend on this app when the weather gets rough.