It seems that you're right. I did some further digging, and it seems that at least in the case of GNU Go, the FSF held the following opinion: "the particular l

It seems that you're right. I did some further digging, and it seems that at least in the case of GNU Go, the FSF held the following opinion: "the particular license violation that FSF brought up with Apple was section 6 of the GPLv2, which states that a redistributor of the licensed program may not impose further restrictions on the recipients to copy, distribute, or modify the program. Apple's App Store terms of service do impose several restrictions, such as limiting usage of the program to five devices approved by Apple." http://lwn.net/Articles/391423/ http://lwn.net/Articles/391423/ Looks like I was wrong!