Have you ever wondered if the applications that you use run on the same Operating System or not? The iOS Application is a little different than the Android. So, if you want to build an App that runs in your Apple, Swift is the Programming Language you?re looking for. Swift 4 adopts the best of C and Objective-C, without the constraints of C compatibility. In other words, your knowledge on OPP and POP Concepts are ready to be used anytime now. So why wait?