What the meaning of open technologies in the FairWind context?
FairWind itself is not open source as any Android app. In the same way the BApps could be or not open source. Nevertheless FairWind runs on Android and uses many open technologies as the SignalK instrument data sharing standard.
So sailors with any skill in computer programming and simple mobile/web technologies background can develop applications gaining benefits from FairWind (and sell them on the Google Play store)! Is mandatory that the FairWind app must be up and running on the device where BApps run.