And on the wind correction front. The GPS in the app's gives you your course taking into account wind. You end up finding a compass heading that allows you to hold your course. This is very similar to out the window VFR flying where you point the plane in a direction that keeps you on a line where you want to go. But now there is a route line superimposed on a map and typically a short line extending from your current location towards where you are going. When the two lines overlap you are on route and on course. Very intuitive.