Absolutely fabulous app
I downloaded qtVlm first on my Mac and afterwards bought the full version on my iPad. I am using it now for a couple of month’s while I am sailing. I don’t say it’s an easy program but that’s is because weather routing isn’t easy. I am really impressed of the functionality and the stability of the program. There have to be a lot of input of experiences sailors using it. So I recommend this app fully if you are willing to invest some time to make it your own. The price is low compared to the functionality you get and I think it’s fair to make a donation if you using the free desktop program.