Cocoa versus Cocoa Touch - What is the difference?

Question

I am learning iOS development in Objective-C, and I have found a lot of code examples.

Some of them, though, say that they are only for Mac OS X (not iOS).

C

Answer 1

Cocoa versus Cocoa Touch-

Cocoa - It is the application framework used for Mac OSX,

Cocoa Touch - It is the application framework used for iPhone and iPod touch

Cocoa - Foundation + AppKit Framework,
Cocoa Touch - Foundation + UIKIT Framework