The short version
- You can type, drill and read your stats without an account. Then your texts and progress stay in your browser.
- With an account, we store what the app needs to work: your email, your saved texts and vocab lists, and your practice progress.
- We do not sell your data. The app shows no advertising and sets no advertising or tracking cookies.
- Payments are taken by our payment providers. Your card details never reach our servers.
What we store with an account
- Your account: email address, a display name, whether the email is confirmed, and a password hash if you sign in with a password. If you sign in with Google, Apple, Microsoft or Discord, we store the identifier and sign-in tokens that provider gives us.
- Your sessions: a session token with the IP address and browser (user agent) that signed in. A session lasts up to 60 days.
- Your content: the texts you save (title, body, any YouTube video attached to them), your vocab lists, and texts you choose to share.
- Your practice: sessions (speed, accuracy, key counts), per-word and per-key statistics including what you typed when you missed a word, daily totals, and the words in your bank.
- Your usage against the plan limits: the words you looked up each day, how many tutor messages you sent each day, the YouTube videos you imported each month, and the texts generated for you.
- Your plan: whether premium is active, the product, and when it ends. No card or payment details.
A text you share is a copy that anyone with its link can read. The app has no button to take a share back; write to us and we remove it.
What stays in your browser
Your settings, drafts, saved texts and progress are kept in your browser’s storage so the app works offline and without an account. The conversation with 선생님, the tutor, is kept in your browser for the tab’s session and is not stored on our servers. Signing out removes the app’s data from that browser after sending anything not yet saved to your account.
Cookies
The app sets cookies only to keep you signed in and to complete a sign-in with Google, Apple, Microsoft or Discord. It sets none for advertising or analytics. Services embedded in the app at your request, such as the YouTube player and the checkout, may set their own.
Services that process data for us
- A hosting provider runs the site, the server and the database, and limits request rates by IP address.
- An AI model provider writes definitions, tutor replies, vocab cards and generated texts. A definition sends the word. A tutor message sends your recent messages and what is on your screen: the text’s title, the sentence and word you are on, what you typed, and recent mistakes. Your email and account identifier are not sent.
- A Korean dictionary service receives the dictionary form of a word you look up.
- Our payment providers run the checkout and the billing portal. They receive your account identifier, your email address and your payment details.
- An email delivery service sends the emails that confirm your address and reset your password, and the messages you send through the contact form.
- An error-reporting service receives error reports so we can fix faults. A report can include your account identifier, the page address and the word being looked up. Emails are removed from reports before they are sent.
- YouTube plays the videos you import, and a captions service fetches their captions from the video’s identifier.
- A font service serves the typefaces, and a stock-photo service serves the pictures on vocab cards.
- Papago (Naver) opens in its own window, with the text in the address, only when you ask for a translation.
- Google, Apple, Microsoft and Discord, only if you choose to sign in with them.
Reading aloud uses the voices built into your browser or device.
To ask which companies provide these services, .
The contact form
The form asks for an email address so we can answer. Your message is emailed to our support inbox and is not stored in the app’s database. If you are signed in, the email also carries your account’s email and identifier so we can find your account.
Seeing, correcting or deleting your data
You can delete saved texts and vocab lists in the app at any time. The app does not yet have a button to delete an account or to export its data. Until it does, we do both by hand on request, whoever you are and wherever you live.
To ask for a copy of your data or to delete your account, .
Changes
When this policy changes, the date at the top changes with it. If a change affects how we use data you have already given us, we say so on this page before it takes effect.