Put Penzap on your home screen

Add Penzap to your phone's home screen so the remote opens full screen.

iPhone and iPad: open penzap.com in Safari (or Chrome) and sign in. Tap Share, scroll down, tap Add to Home Screen, then Add.
Android: open penzap.com in Chrome and sign in. Tap the ⋮ menu at the top right (Samsung Internet: ≡ at the bottom), then Install app or Add to Home screen.
Tap the new Penzap icon. Sign in once there; it stays signed in.

Good to know

Menu → Add to home screen in the app shows the steps for your phone. See also /install.php.