Now that the majority of the global population uses smartphones with cameras, most photos are taken with smartphones instead of point–and-shoot cameras. For this reason, images are always available and play a central role in how users utilize their smartphones. Fortunately, you have several different methods by which to create, utilize, manipulate, and display images. In addition, you can add filters to images, allowing for drastic alteration of the display with very little code. By understanding these inherent functionalities and techniques in iOS, you can more easily implement stronger, more powerful, and more informative applications.