Privacy

When you practise, each review saves which line it was, how you rated yourself, when it happened, and — when you typed an attempt — how many words matched and how many you missed. That is what the spaced-repetition schedule runs on.

What you actually typed is never stored. The comparison happens, you see which words you missed, and the text of your attempt is discarded. Only the score survives.

Starting without an account creates an anonymous row with no name, no email and no profile — just an id to hang your cards on. If you later add an email to keep your progress, it attaches to that same row, and the email is used for sign-in links and nothing else.

Page views and five specific actions — first run shown, begin learning, a review submitted, and the two save-your-progress steps — go to PostHog, an analytics service. Session recording is off. Autocapture, which would log every click and keystroke, is off. If your browser sends Do Not Track, PostHog is not loaded at all.

Errors go to Sentry so I can fix crashes. Anything that looks like personal or secret data is stripped before an error report leaves your browser.

In August 2026 I started running a small, capped advertising test to find out whether anyone outside my own circle wants this. If you arrived here from one of those ads, the Meta advertising pixel loads and reports three things: that a page was viewed, that you began learning, and that you submitted a review. Not which chapter, not how well you did, not what you typed.

If you did not arrive from an ad, the pixel does not load at all. It is scoped to the traffic it exists to measure, rather than running on everyone. And it respects Do Not Track the same way the analytics do — that signal turns it off regardless of how you got here.

That scoping is deliberate, and it is what keeps the promise on the front page — nothing you didn’t ask for— true rather than nearly true. Someone who finds this app on their own is not carrying an advertiser’s tracker because I once ran a test to see whether anyone was out there.

When an ad link brings you here, the campaign name is kept in a first-party cookie so that your visit is counted separately from everyone else’s. It is used to keep the numbers honest, never to build a profile.

• No notifications, and no email you did not ask for.
• No selling or sharing of your data with anyone, for any price.
• No recording of your screen or your keystrokes.
• No streaks, no badges, and nothing designed to make it hard to stop.

Turning on Do Not Track in your browser disables the analytics and the advertising pixel here, with no further steps. A content blocker will also stop both; nothing in the practice itself depends on either one.

If you want a copy of what is stored about you, or you want it deleted, write to me at hello@learnthedao.com and I will do it by hand. It is one person and a small database — there is no form and no ticket queue.

Last updated 16 August 2026.