Privacy policy

Last updated 2 November 2026

We collect as little as we can, never sell data, and show no ads.

• Without an account: to limit guessing, we keep your checks for one day under a coded form of your IP address (not the address itself). Reports store the problem and your note, not who you are.
• With an account (Google or an emailed link): your email, and with Google your name and picture. We store your checks to show your progress, and your page requests for one day to limit scraping. Delete your account and all of it under Settings at any time.
• Cookies: only the ones the site needs, to keep you signed in and remember your settings. No tracking, so no cookie banner.
• Others who handle data: the cloud hosting and email services that run the site for us, and Google if you sign in with Google. No analytics.

To see, correct or delete what we hold about you, write to hello@mathegoras.com. Mathegoras is for people aged 13 and over.