Keep this on your phone
So it opens in one tap, like any other app.
iPhone
1
Tap the Share buttonThe square with an arrow, at the bottom of Safari.
2
Tap Add to Home ScreenScroll down in the list if you do not see it.
3
Tap AddThen open the app from your home screen.
Android
1
Tap Install appIt appears at the bottom of the screen, or in the browser menu.