Privacy policy
Last updated: 5 October 2026
This policy covers both the Lantern Logic website (this site, including the daily puzzle, the 600 levels and the app version in the browser) and the Android app Lantern Logic: Queens Puzzle.
What we collect
Nothing. Neither the website nor the app collects, transmits, sells or shares any personal data or usage data. There are no accounts, no analytics, no tracking, no advertising and no third-party scripts, fonts or embeds.
The website
- No cookies. The site sets no cookies of any kind.
- Local storage only. To remember your streak, best times, an unfinished board, today's remaining hints and your settings (auto-cross, colour patterns), the page saves a small record in your browser's local storage. It never leaves your device and is never sent to us. Clear it at any time by clearing this site's data in your browser. In private browsing, it disappears when you close the window.
- The 600 levels keep their progress in the same local record: stars and best times per level, an unfinished level, whether you finished the tutorial, and the same three daily hints as the daily puzzle.
- The app version in the browser stores its progress in your browser's storage in the same way.
- Hosting. The site is hosted on GitHub Pages. Like any web host, GitHub may record technical data such as IP addresses in server logs for security and operation; see GitHub's own privacy statement. We have no access to those logs and add nothing to them.
The app
The app works fully offline and makes no network requests. To remember your progress it saves a small file on your device (level stars and times, daily results and streak, remaining hints and your settings). This file never leaves your device. Delete it with Settings → Reset progress or by uninstalling the app.
The Android app requests only the vibration permission, for optional haptic feedback that you can turn off in Settings.
Sharing your result
When you press Share after a daily puzzle, a short text such as “Lantern Logic Daily #12 — 7×7 in 2:41 ✨✨✨” (plus a link to the puzzle on the website) is passed to your device's share sheet or copied to your clipboard. Nothing is sent anywhere unless you choose to paste or share it.
Advertising
Neither the website nor the current app shows ads. If that ever changes, this policy and the store listing will be updated first.
Lantern Logic may also be offered on third-party web game portals. A copy played on a portal runs inside that portal's page, which may show ads and keep your progress in your portal account; the portal's own privacy policy applies there. The website you are reading has no ads and no portal code.
Children
Lantern Logic is suitable for all ages and collects no data from anyone, including children.
Changes and contact
Changes to this policy are published on this page with a new date. For questions, open an issue on the website's public repository, coin-maker3/coin-maker3.github.io.