Add AssistApp to the Home Screen on iPhone
In My Shortcuts in the Shortcuts app on your iOS or iPadOS device, tap on a shortcut, then tap to open Details.
Tap Add to Home Screen.
Optional: To use a custom photo for a Home Screen icon, tap the icon (in the Home Screen Name and Icon area) then choose one of the following:
Take Photo: Use the camera to take a new photo.
Choose Photo: Select an existing photo from your Photos library.
Choose File: Select a photo from the Files app.
Optional: To change the name that appears on the Home Screen, tap the name (in the Home Screen Name and Icon area), tap , enter a new name then tap Return.
The shortcut is added to your Home Screen.