Privacy policy

Last updated: May 2026

Sourdough Maths is operated by Mark Stent in the United Kingdom. This page explains what we collect, why, and how to opt out.

Information we collect

• Account data. If you sign in, we store your email address, name, and profile image from Google. If you subscribe to Pro, we store a Stripe customer ID linked to your account.
• Recipe data. If you save recipes or log bakes as a Pro user, we store the recipe inputs, ingredient weights, and any notes or ratings you add. This data is private to your account.
• Usage data. Our server logs include IP address, user agent, referrer, and pages visited. This is standard web-server behaviour and we use it for spam prevention and performance monitoring.

Cookies and tracking

We use cookies for:

• Authentication. A session cookie remembers you between visits if you sign in.
• Advertising. Free pages display Google AdSense ads. AdSense uses cookies to show relevant ads and measure performance. Manage your ad preferences at adssettings.google.com.

Third parties

• Google for sign-in and AdSense.
• Stripe for subscription payments. We never see your card details.
• Resend or similar for transactional email (sign-in magic links).

Your rights

Under UK GDPR you have the right to access, correct, export, or delete your personal data. Email us to make a request. We do not sell personal data to third parties.

Contact

Questions about this policy: hello [at] sourdoughmaths.com.