The APIs may be complex, but at least, unlike Android, iOS gives you enough control to do interesting things with real-time audio. This is the #1 reason I haven't tried writing anything for Android yet.
Yeah, I totally agree on that. I looked into it and there's no way I could port my synthesizer app to android without some big philosophical sacrifices.
This ticket has been open since 2009... http://code.google.com/p/android/issues/detail?id=3434