I have used Litchi several times and am amazed at what a great tool it is. Today I ran a mission that took it around a hillside therefor losing contact. I tell you, it takes balls of steel to just sit there and wait for it to complete it's mission and start to come back and regain signal. After a few minutes with no control and no video feed I started to get signal back and decided to cancel the mission and bring it back faster then programmed as I was against the wind and didn't want to take chances. Of course it did exactly what it was supposed to when disconnected, continued the mission and I was overly paranoid about the battery, I landed with 45% left. What a great app. Anyone on the fence about purchasing this app, go for it you will be amazed and your video will come out so much more smoother.