Answer
How do I install Vexor on iPhone?
Open vexorapp.com in Safari (Safari is required — Chrome on iOS won't install PWAs). Tap the Share icon (the square with the up-arrow at the bottom of the screen). Scroll down to "Add to Home Screen" and tap it. Confirm the name (default "Vexor") and tap Add. The Vexor icon appears on your Home Screen and launches in full-screen mode like any other app.
Apple deliberately restricts PWA installation to Safari (Chrome on iOS uses Safari's engine but doesn't expose the install prompt). After installing, the app receives push notifications, supports offline mode, and can be force-quit + relaunched without losing state.
If "Add to Home Screen" doesn't appear in the Share sheet, your iPhone may be on iOS 13 or older. Vexor requires iOS 14+ for full PWA functionality.