On iPhone, in Safari:
- Tap ••• at the bottom right, then Share (on older iPhones the Share button is at the bottom of the screen).
- Tap Add to Home Screen, then Add.
On Android, in Chrome:
- Tap the menu at the top right.
- Tap Add to Home screen (or Install app), then Install.
Open this page on your phone, in Chrome on Android or in Safari on iPhone, then tap "Add to your phone".