Privacy Policy

Test answers

Plate generation and scoring are handled entirely by JavaScript in your browser. The numbers you enter and your results are never sent to a server.

Simulator images

Images you choose or paste are read and converted only on a canvas in your browser. They are never uploaded to any server and disappear from memory when you close the page.

Browser storage

Only your screen theme, your last chosen plate count and simulator settings, and a summary of recent check results (up to 20: date, plate count, seed, correct answers per axis, estimate) are saved in this device's localStorage. You can clear them at any time in your browser settings.

Ads and cookies

Kakao AdFit ads may be shown to support the site. Ad providers may use their own cookies or similar technologies to serve and measure ads, subject to their own privacy policies.

Offline cache

To speed up return visits, a service worker caches only static files such as styles and scripts. Your answers and images are never cached.

Contact

For privacy-related inquiries, please use the email address on the Contact page.