Privacy & measurement

Updated 1 November 2026

The publisher identified on the Contact page is responsible for store processing. Contact that address for access, correction, deletion or other applicable data-rights requests. You may also contact your supervisory authority.

Essential browser storage keeps your cart, reader preferences and measurement choice. Payment is processed by Stripe. The store receives order references, purchased titles, payment status and the contact details needed for delivery and support. Card details are handled by the payment provider.

Vercel hosts the site. Private file storage serves purchased editions. If configured, Resend delivers order emails. These providers process information for hosting, payment, delivery and support; their international processing and safeguards depend on the publisher’s actual service configuration.

Optional Google Ads purchase measurement loads only after you choose “Allow purchase measurement”. It sends the verified order value, currency and a random order reference for deduplication. We exclude book names, customer contact details and private order tokens from that event, and keep personalised advertising disabled. Google may still process technical and advertising identifiers when you consent.

Use “Privacy choices” at any time to decline or withdraw optional measurement. Refusing it does not prevent purchase or downloads. We do not create advertising audiences from health, family, financial-hardship or purchased-title information.

Order and accounting records are retained for applicable legal and accounting requirements; operational logs are kept only as needed for security and support. Exact provider retention and statutory periods must be documented by the legal seller before live checkout is enabled. This page does not invite you to send sensitive health or financial information.