Privacy

Your progress (answers, ticks, time spent, settings) is stored in this browser on this device and is never sent anywhere. There are no accounts, no cookies, no analytics and no advertising.

The sky band on the front page remembers the city you chose, and the display mode you pick is remembered, both in this browser.

Everything the site uses, including its fonts, is served from this site. The site is hosted on Cloudflare, which handles the requests your browser makes, as any web host does.

A backup file is created on your device when you ask for one, and stays there.