Code injection isn't impossible in Objective-C even on iOS, check out http://injectionforxcode.com/ http://injectionforxcode.com/ or the write up by Erica Sadun

Code injection isn't impossible in Objective-C even on iOS, check out http://injectionforxcode.com/ http://injectionforxcode.com/ or the write up by Erica Sadun here: http://www.tuaw.com/2012/05/10/devjuice-injection-for-xcode/ http://www.tuaw.com/2012/05/10/devjuice-injection-for-xcode/