On Sunday, 3 May 2015 16:02:53 UTC+2, Karl Kunz wrote:
Since the XCsoar site sends Android users to Google Play to get the software, why do they have a problem with the AppStore. This is just the way that programs are installed on these devices(iOS) and it seems that XCsoar is being MORE restrictive by not allowing one operating system access to an "open source" app.

The GPL License is incompatible with many application-distribution-systems, like the Mac App Store, and certain other software distribution platforms (on smartphones as well as PCs). The problem lies in the right "To make a copy for your neighbour", as this right is violated by the integrated DRM-Systems made to prevent copying of paid software.

The reason that the Mac App Store (and similar projects) is incompatible with GPL-licensed apps is not inherent in the concept of an app store, but is rather specifically due to Apple's terms-of-use requirement[105] that all apps in the store utilize Apple DRM-restrictions.

More details at: http://en.wikipedia.org/wiki/GNU_Gen...o_app_st ores

I fail to see how XCSoar is being "more" restrictive when Apple is the one throwing the spanner in the works due to their draconian licensing regime.
You're free to download XCSoar source code and port/cross compile it for iOS if you want to.