iPhone or iPad
  1. Open this page in Safari.
  2. Tap Share, the square with an arrow pointing up. If you don't see it, tap ··· first.
  3. Tap Add to Home Screen, then Add.
  4. Open Portal X from your home screen and sign in there. The app keeps its own sign-in, separate from Safari's.
Android
  1. Open this page in Chrome.
  2. Tap Install Portal X above. If there's no button, tap the ⋮ menu, then Add to Home screen or Install app, then Install.
  3. Open Portal X from your home screen.
Computer

In Chrome or Edge, click Install Portal X above, or the install icon at the right end of the address bar. It opens in its own window and gets a spot on the taskbar.