Got the Mavic a few weeks ago. I've been flying with the go 4 app. I really like what I see on YouTube about the Litchi app of pre-programing your flight. No flights yet on the Litchi. But for what I want do with Mavic I think the litchi way-point is going to shine over the Go 4 way-point. (fingers crossed) I just need to remember to hit the save button.