1. Tap the Share icon in Safari's toolbar
2. Scroll down and tap Add to Home Screen
3. Tap Add — Skyline now opens full-screen like an app

Skyline can keep a log of your approximate coordinates and IP address, stored only in this browser, so you can see your own visit history below. This is off by default and never shared with other visitors of this app.

You can clear it at any time from the "Your saved data" section on the page.