@mange991 said in Question on route planning:

If I then use Windy with setting left to right I will know if I need to tack or not

Yes that’s possible with the Route planner, but for me it’s easier for this purpose to set Bottom to top:


And you can do it only if the legs are longer than 1 hour. So in Swedish inshore waters, it is difficult to use this advantage and it better to set North up because in this case the wind direction shown by the Route planner is independent of the boat course.