Litchi, I was wondering if it's an account login type authentication or whether it's tied to the device when downloaded via play, I assume you don't have to login then at any stage?
Yes, you create an account with Litchi for convenience.
You can plan a mission on the desktop, save it and you can open it on any mobile device that is compatible (same compatibility as DJI)
And, just the opposite - plan in the field and tweak precision at home.