I have been using AppCode recently to circumvent an issue with Xcode in refactoring, and AppCode has nailed for me quite few “oups’es” whereby it warned me of un-released but retained object refs … sniffing them out correctly through @property specifications too ! (not exactly what I was looking for mind you 🙂 ), but a great help.
I was wondering if such a feature is available in Xcode (am using 4.1.1), and if yes how/where to enable it.
You can perform that kind of check using static analyzer – choose “Analyze” option from Product menu (or shift-cmd-B shortcut)