Using Xcode (to develop on iOS) I want to create a second project that it is the same as a first project but some classes are differents.
Exactly, I\'m creating an I
duplicate target of paid version and name it free version
define macro name PaidApp=1 in paid target, then put this line of code in starting of applicationDidfinishLaunching.
#ifdef PaidApp
[[NSUserDefaults standardUserDefaults] setInteger:1 forKey:@"adDisabled"];
#endif
when free app running target, if someone purchase paid app feature then set value of @"adDisabled" to 1 (by default value of @"adDisabled" will be 0)