Privacy Policy

Your responses

The test runs entirely in JavaScript inside your browser. The buttons you press, your reaction times and your results are not sent to any server.

Browser storage

The display theme (light/dark), your last test settings and a summary of each session (date, task, mean per condition, interference effect, accuracy) are stored in this device's localStorage. You can delete them at any time with the Clear history button or through 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, and this is governed by each provider's privacy policy.

Offline cache

For faster repeat visits, a service worker caches only static files such as styles and scripts. Your test results are not cached.

Contact

For privacy questions, please use the email address on the Contact page.