Bjorn Stabell, the developer in question, has duplicated most of his arguments in this thread, at http://ask.slashdot.org/comments.pl?sid=1322797&cid=28911143 .

Bjorn was in fact quite right about the source being out-of-date, and his pointing it out helped us track down a pretty boneheaded technical glitch on our side (we were missing a post-update hook). We hadn't noticed it as it only shows up for http access, and we use ssh to access the same repository. It's fixed now, and should remain up-to-date in the future. Apologies to Bjorn and anybody else who accessed the source -- please do a pull to get the latest.

Please moderate up the parent. I very much appreciate Bjorn chiming in on this with his side of the story -- and again, I can't emphasize enough just how much we respect his contribution; without Bjorn, there would have been no XPilot to begin with.

I'd like to clarify a few points.

The source is current. The git repository available on the page is exactly the source that we've built each release from, and is in fact the only way the two of use share code with each other; when it's not updated, it's because we haven't changed anything that day.

The message you're referring to where we "went ballistic" was very much an over simplification. If anybody is interested in the actual email he's talking about, I'll be happy to provide it, but this is a mischaracterization. In particular, Bjorn responded to our extending an olive branch by providing a deadline for us to make the game free, and yes, that rubbed me the wrong way; and Bjorn, I apologize for letting my frustration become so evident.

Your points about whether this was fair or not, and the issues of selling OSS, are perfectly valid -- and in fact trying to determine which of our views reflected the majority perspective of expectations when contributing to GPLed software was, in fact, the reason we wished to have this open discussion.

Yes, people can run modified versions, with a caveat (which isn't under our control). Apply doesn't allow /anybody/ to deploy code to any non-jailbroken iPhones unless they're a registered developer. So, any registered developer can run modified copies of our code on their phone, and anybody else can run a modified version in the iPhone simulator.

Very true -- I believe we do comply, but I'd be appreciative if anybody points out problems. The clause you quote in particular is referring to distributing the GPL as part of the source code (rather than the binary), and we definitely do that.

"You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program."