Instructions

Open the Shortcuts app on your iPhone.
Under the My Shortcuts tab, tap the + button.
Tap Add Action.
Choose the Scripting option.
Under Apps, tap the Open App option.
Tap Choose, then select an app to customize.
Tap the … button.
Give your Shortcut a name.
Select Add to Home Screen.
Give your app a new name if you wish, then tap its icon and select Choose Photo.
Select a custom icon image from your photo library.
Finally, tap the Add button to place the icon on your Home screen.