Open this link on your iPhone
Long press on the image and choose Save to camera roll
Open the Shortcuts app
Tap the +
to add a new shortcut
Tap the Add Action
button
Tap the Scripting
option
Tap the Open App
button
Choose the Genuine Impact app
Tap the •••
icon
Tap the Add to Home Screen
button
Choose a name, then tap the icon
Tap the Choose Photo
option
Choose your icon, then hit Add