Flight planning on small smartphone screens is a kind of modern punishment!
Imagine how much easyer and quicker it could be with
- a large map on a wide screen
- mouse usage for quick and exact positioning of everything
- keyboard usage
- sufficient memory and computing power
Of course an intelligent (wireless?) tool for synchronizing dh-data between smartphone and desktop computer in predefined directions is necessary.
(I am using WIN10 - so please start with a Windows-version ;-))