Here's the spiel:-

The NorthSails App is THE essential tool for all windsurfers!
Enjoy the NorthSails experience at your fingertips. It has never been that easy to get all the information
you need. Browse through our product range, check a bunch of windsurfing clips, find your nearest
dealer and much, much more. All of this within a single, simple and well designed App.

Nothing more to say really. Has some pretty cool features you would not have expected.