What is an IOS button?
It is a control that enables the user to interact with the application. It is used to trigger the events performed by the user. It executes the custom code in response to user interactions. class UIButton : UIControl.
How big should buttons be IOS?
Buttons are by default dynamic in width and are dependent on the container they are placed in, but they can also be set to a fixed width and height. A touch area of a button should not be less than 44pt.