I am very new to iOS programming. I am familiar with xcode and swift, but I want to do research on those web applications that come from websites. So you know how some websites are set to when you add them to the home screen of your iDevice, it creates a mini application on your device? I'm wanting to know what are those calls so I can start doing research on how to create them. I'm very good with web development but I haven't discovered how to create those yet. Any point in the proper direction will be greatful. Thank you.