Originally Posted by AdultKing

Re-educate yourself, the base of iOS and OS X is Darwin (a flavour of BSD).

On top of that are the core frameworks, Core Foundation and Foundation.

Where they differ is the UI Toolkit is based on Cocoa Touch rather than Cocoa on OS X.

If you jailbreak an iOS device, add a terminal app and then run top you'll see much of the same processes running just like on any BSD distribution.