MonoTouch recently released version 5.2.13 to fix an issue with reference counting in newer versions of iOS.
Running our apps in the newer version of iOS seems to be just fine. We don’t use XCode or Interface Builder at all.
What can we do to see if our apps fail the reference counting issue, is there a kind of action, like creating a lot of XYZ or updating ABC that would stress test our apps for the newer version os iOS ?
Run your application under XCode’s Instruments using:
a) an old version on iOS (e.g. 5.1) and;
b) under a really new version of iOS.
Use the application for a while and compare their memory usage (i.e. they should be comparable even if the initial memory usage can vary by iOS version).