It's undeniable that mobile devices have become a huge part of modern society. Similar to what the web did, iOS has revolutionized what digital products can be by giving them a home. The huge difference, however, are the two foundations. iOS is much different than the web in that it's able to provide a native home with a tightly controlled experience for it's applications. That's something the web can't do while catering to tons of browsers, OSs, and computing devices.
This is an exploration into iOS—and should begin familiarize you with the standards and constraints of the platform. It's probably much more different than you expected.