The Vaavud Mjolnir wind meter turns your smartphone into a high-tech meteorological tool with the free Vaavud app.

The design is inspired by professional cup anemometers, but with two cups instead of three, to make the device pocket friendly and super rugged. Takes accurate wind readings, at wind speeds from 2 – 24 m/s (Up to 48 m/s on some Android phones), with a precision of +/- 4 %.The Mjolnir wind meter uses the magnetic field sensor in the phone, so the device contains no electronics. It comes with a practical neoprene bag so you can take it with you anywhere.

Wind speed: 2-24 m/s, +/- 4% precision
Wind Direction: No
Omnidirectional: Yes
Technology:  Magnets (no electronics)
Color: White
Construction quality: Super rugged
Dimensions: 20x112x59 mm
Neoprene bag: Yes
Weight: 17 g