Home-screen app
Install on iPhone
Open in Safari
Make sure you're viewing this page in Safari — installing only works there on iOS.
Tap the Share button
Tap the square icon with the arrow pointing up at the bottom of Safari.
Find “Add to Home Screen”
Scroll down the share menu until you see “Add to Home Screen” with a plus icon, and tap it.
Add the app
Rename it if you like, then tap “Add” in the top right corner to finish.
These steps are for iPhone & iPad. On Android, use the Install button in the banner; on desktop, look for the install icon in the address bar.