How do you determine (programmatically) if an iPhone/iPod is:
Pinch Media can detect if a phone is jail broken or the software running is cracked, does anyone know how they do this? Are there any libraries?
Here is one of the ways to detect if your app was cracked.
In short: the cracking usually requires changing the Info.plist. Since it's regular file you have access to, it's pretty easy to determine such changes.