Privacy Policy
Last Updated as of 2026-11-13
Payments
Browsing categories, drawing your guess, and revealing each chart’s result are free and require no login or account. Only the final See results screen — your total score and full set breakdown — requires a one-time $7.9 payment, completed through Stripe’s secure hosted checkout. No card details are stored by Extraplot. Your purchase is stored in this browser and can be removed by clearing this site’s data.
Play History
When you reveal a chart, the game saves the chart ID, your latest and best scores, your play count, and the time you played in your browser’s local storage. This lets you see your results after refreshing and skip charts you have already played. You can remove your play history by clearing this site’s data in your browser.
Visiting the Site
Your browser sends standard request information, such as your IP address, when it loads the site. We also use privacy-focused analytics on public pages: Google Analytics 4 (with IP anonymization and no advertising storage) to measure page views, and Microsoft Clarity to understand how the site is used. Clarity masks form input and is stopped on the checkout page and payment-return URLs, so payment details are never recorded. See our Cookie Policy for details. You can block both with your browser's tracking protection.
External sites, including the data sources linked after each reveal, have their own privacy policies.