Privacy

Emaki · last updated 24 September 2026

Emaki keeps as little as it can. You can use the whole app without an account, and if you never sign in, nothing you do here leaves your device.

What stays on your device

Your progress, your settings and your study streak are stored by your browser, in local storage, on the device you are using. No cookies are set. Clearing your browser data for this site erases that copy, and if you have never signed in there is no other copy anywhere.

If you sign in

Signing in is optional. It exists for one reason: so a phone and a laptop can share one set of progress. If you do sign in:

• Your email address and your study progress are stored with Supabase, which provides the database and the sign-in system.
• Sign-in links are sent through Resend, which handles the email itself.
• If you choose the GitHub or Google button instead, that provider tells Emaki your email address and nothing else. Emaki cannot read anything else in those accounts.

Progress here means which words you have studied, how well you answered and when each is next due. There is no profile, no name, no payment information, and nothing about you beyond the address you signed in with.

Measurement

Page views are counted with Cloudflare Web Analytics, which sets no cookies, needs no consent banner and cannot follow you to other sites. It reports totals, not people. Cloudflare also sits in front of the site as its network provider, so it handles the requests your browser makes in order to serve them.

What Emaki never does

• No advertising, and no advertising or analytics trackers beyond the one named above.
• Nothing is sold, rented or shared for marketing.
• No email is sent to you except the sign-in link you asked for.

Removing your data

Settings has a delete option that removes the stored copy of your account and its progress. One honest caveat: if another device is still signed in to that account, it can upload its own copy again afterwards. Sign out there first. Closing that properly needs work that has not been built yet, and the app says so where you press the button.

To erase the local copy instead, clear this site's data in your browser.

Children

Emaki is not aimed at children and asks for no age information. It is a vocabulary trainer, and the only personal detail it can hold is an email address.

Changes

If this page changes in a way that matters, the date at the top changes with it.

Getting in touch

Questions, corrections and requests about your data can go to the issue tracker, which is read by the person who built Emaki.

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