Does not work for wind on port bow
If you use relative wind of 180 or greater (ie on the port bow) the calculation seems to fail.
Rubbish
Calculations are false. The app is a fraud.
Has flaws
Does not calculate wind direction properly. Can be off as much as 200 degrees.
Response from developer
Hi, have you checked the new version? It does much more. Hope it helps you.
Don't waste u money
It doesn't say you have to enter all the fields to then calculate the twd... hopeless
