This app is very basic and rudimentary. There is no help or how to use instructions. You just have to figure it out on your own. You can't change any settings like wind speed measurement. It only displays speed in knots, I want it in MPH, but knots is all you get. Also, it's a static display, there is no animated movement showing trend. When you change between different type of map displays like street, topo, bing, it takes forever to load the screen, and I have super fast internet connection. I think I wasted my money on buying this app. Going to delete.