Privacy

Draft — effective when purchasing opens.

What this site stores, in one paragraph: your email address (that's the whole account), which lessons you've marked complete, and — if you buy something — a record of the purchase and its Stripe identifiers. Sign-in links and sessions are stored only as hashes.

What it deliberately doesn't store: passwords (there are none), card numbers (Stripe handles payment entirely), analytics profiles, or tracking cookies. The only cookie is the session that keeps you signed in.

Third parties that touch your data: the email provider (to deliver sign-in links), Stripe (to process payments), and GitHub if you choose to sign in with it (we receive your verified email address).

Want your account and its data deleted? Email[email protected] from the account's address.