A new version is on it's way, and it has some great new features.
A new "Trim" button in the Statistics View, let's you trim/uptimize your polars.
In the sample below only a few values have been typed in for the one side of the polar. A tap on the Trim button an values have been mirrored and interpolated - also interpolated across windspeeds. This will make it a lot easier to get a valid polar.
It's now possible to save temporare waypoints