Hi,
I had build an antipiracy module for Titanium (iOS). It will check 4 ways (4 methods) if your app is cracked. It will not protect your app against cracking, but you can detect in your app if your app is running as cracked app or AppStore version.
With examples for further actions within your app to made your app unusable in case of piracy.
I will sell it to every one interested for about $15 => paypal accepted.
Regards Marc