Add to your home screen for notifications and one-tap access.
You must use Safari — other browsers can't install to your home screen.
Tap theSharebutton at the bottom of Safari (top-right on iPad)
Scroll down and tap Add to Home Screen — if you don't see it, scroll further down the list
Tap Add to finish
Tap the browser menu (⋮ in Chrome, ≡ in Samsung Internet), top right
Tap Install app / Add to Home screen
Tap Install to confirm
After installing, open SWM Radio from your home screen icon (not your browser) so push notifications work. Then enable notifications.