Here is the wonderful gadget, lets you measure wind using your Android (Galaxy S2 and S3) or iOS device (iPhone 4. 4S, and 5, iPad 2 and 3). The Vaavud wind meter connects to your device wirelessly using the magnetic field of two small magnets in the rotor. The thing that makes it quite exclusive is the fact that it doesn’t involve any electronics at all.
Its price tag is $46, check it out on Kickstarter.