To change application icons on iOS 18, press and hold any application until it wiggles and move it to your desired home. To stylize, click on the plus sign at the top left corner of the screen and select ‘Customize’. There are three primary modes that include regular light icons, dark mode icons or a tinted wherein you have to set a color to all your icons and widgets. There are several sizes to choose from, including small, medium and large icons while large icons have no text label attached.