Privacy policy

Last updated: draft.

What we collect

• Purchase details (your email, name and license key) are handled by our payment provider, which processes your payment. We receive your email and license key.
• Access records kept to deliver the product, prevent sharing and handle refund requests: when you first unlocked, how many devices, which lessons you opened, which templates you copied or printed, and a short code derived from your key.
• Your progress (completed lessons, calculator inputs, theme) is stored in your own browser on your device, not on our servers.

Cookies

Two functional cookies keep you signed in. We do not use advertising or tracking cookies and do not sell your data.

Who processes data

Our payment provider (payments, taxes, receipts, license keys) and our hosting provider (serving the site and storing access records). We may disclose information if the law requires it or to protect against fraud and misuse.

How long we keep it

Access records are kept while your license is active and for a reasonable period afterward to handle disputes.

Your choices

Ask us to access or delete the personal information we hold, subject to what we must keep for legal and payment reasons: support.

Children

The Library is for adults and is not directed to children under 13.