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I hope the below is somewhat interesting and relevant for some people here. Let me know if it isn't and I'll take it off-list. > Of course, as the app developer I'm free to give you one licence and Apple another - something they make me do when I upload it into the App Store. You're right, that is the only way to distribute GPL or LGPL software on the App Store while still complying with Apple's developer agreements. The main downside to this that I see is that it requires agreement from all developers of a project. Rather than just releasing their contributions under the GPL, they have to do that and agree to give Apple a copy under different terms. Obviously that isn't an issue at the moment for something like your software, that is only developed by you, and only targets the App Store anyway, but in general it's not great for free software. It also effectively removes the nice part of copyleft that anybody who gets a copy of the source has the same rights as the original developers. The "freedom to fork" is effectively reduced, as nobody else can (say) add a new feature and release their own modified version on the predominant distribution channel. Permissive licenses like BSD, MIT and ISC don't have the same issues, as they don't require the same freedoms for all users that the GPL and LGPL do. It is really an issue with the agreements that Apple require developers to sign in order to put software on the App Store, and the lack of any alternative way of distributing software for the iPhone. It is a problem for free and open source software, but one that only Apple could adequately fix, and that they don't seem to care about. The Android issue is slightly different. While I believe the Google Play Store has similar agreements that preclude GPL and LGPL software from being listed there, Android does normally allow people to install software outside of the official store app, e.g. from an independant website or an alternative app store. There's a recording of a panel discussion about App Stores from a free software perspective if anyone's interested. Unfortunately it doesn't conclude with a satisfying "and this is the way the fix the problem" consensus, but that's unsuprising ;) http://faif.us/cast/2012/mar/13/0x24/ Outside the issues with free software licensing, App Stores like these also have problematic (and well publicised) issues of curation, which are ten times worse if there is no alternative distribution channel. The book and blog "The Future of the Internet" covers these issues really well, if anybody is interested in reading more. http://futureoftheinternet.org/blog Nick