Lenny Rachitsky, who heads Localmind, a social discovery app for iOS and Android, said he doesn’t see Apple creating fragmentation problems for its developers. “We haven’t put a lot of thought into it yet, partly because we assume Apple isn’t going to pull an Android and fragment the device market unnecessarily. If they do, they must have a really good reason to do it, and we’re confident they’ll provide tools to make it easy to migrate. The last thing they want to do is put more friction in front of developers.”