Yea, this is a question of GPL Licensing and Matt is right. WordPress and Automattic have both been huge proponents of open source and without GPL existing I wo

Yea, this is a question of GPL Licensing and Matt is right. WordPress and Automattic have both been huge proponents of open source and without GPL existing I would not be able to make a living (as well as the millions of software engineers in the world who use OSS every day). The GPL is pretty clear about using GPL software and creating derivative work (i.e. an iOS app that, in part, uses GPL Licensed code) then distributing it to others, that you have to also include the source code along with the GPL license. Wix should just open source the app and put an end to this - as it's obvious that they're violating the terms of the license.