Check these out in the App Store
Kitesurf Insrtuctor: Beginner
Kitesurf Instructor: Intermediate
Also look up:
Kitesurf - The Ultimate Kiteboarding Simulation Game at
apps.facebook.com/login/?next=https%3A%2F%2Fapps.facebook.com%2Fiphonearcade%2F
Turn your iPhone into a wind meter ... www.goingapps.com
It's not free though, us$0.99 
mate of mine got the wind meter on his iphone do no how it works but it does defently worth the $1.20 he paid for it
