gps-wingfoiling

I am looking for an officially approved GPS application for Apple devices. I found two links and want to know who has experience with Waterspeed App and what to say about it.

http://www.windsurfbreizh22.com/modules/newbb/viewtopic.php?topic_id=6934

https://www.waterspeedapp.com/

Hi,

We have not tested this yet, do you have any tracks recorded ? If so, please forward them to info@gps-speedsurfing.com

SEVERNE