This version is no longer functional. Look for the new Compass and Wind Rose 2 version
https://play.google.com/store/apps/details?id=com.invernomuto.bussola2
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A simple compass with wind rose.
"Compass and Wind Rose" helps you name the various winds: point your smartphone in the direction from which the wind is blowing and you will know what kind of wind it is based on the direction it is coming from.