Delete Your LangLearn Account

Last updated: 20 October 2026

This page explains how to have your account and data deleted from LangLearn, the language-learning app published by CTO Teachings. It applies to the Android app, the iOS app, and the website the app is built on, language.ctoteachings.com. It sits alongside the LangLearn privacy policy and the LangLearn Terms of Use.

Delete Your Account in the App

Open Settings › Delete account. Review what will be deleted and retained, type DELETE, then choose Permanently delete account. Account settings, learning progress, saved library and playlists cannot be restored through the app. You are removed from leaderboards and signed out. Cancel leaves the account unchanged. If deletion is interrupted, retry to finish it.

Request Deletion Outside the App

You can also request deletion by email:

  1. Send an email to [email protected] with the subject line "LangLearn account deletion request". If you would rather message us, send the same request on Telegram to @europeandean.
  2. Send it from the email address you signed in with (or, on Telegram, tell us that address). That is how we confirm the request is yours — we cannot delete an account on the word of a different address.
  3. Say whether you want everything deleted, or only part of it (for example, your library and playlists but not your account).
  4. Wait for our confirmation. We reply to confirm we have received the request, and again once the deletion has been carried out.

You can also reach us through our contact page if you prefer a form; put "LangLearn account deletion request" in the message and use the address you signed in with.

How Long It Takes

We action deletion requests within 30 days of verifying the request, and usually much sooner. Backup copies of our databases are overwritten on a rolling basis and any residual copy is gone within 90 days.

What Gets Deleted

When you ask us to delete your account, we delete:

  • your account record — the email address, Google account identifier, display name, and profile picture URL we received from Google Sign-In;
  • your learning profile — the language you are learning, your native language, your word level, and how many new words you asked to be introduced;
  • your word progress — every word you have marked known, learning, or unknown;
  • your library and playlists — the playlists you created, their names and ordering, and the pointers that mark which passages are yours;
  • your leaderboard entries, login identities, and account access credentials;
  • any unsupported-language request you sent us, which is stored against your email address.

Deleting the app from your device also removes everything LangLearn stored locally: the sign-in token held in the device keystore, and any passage text or audio downloaded for offline listening.

What Is Kept, and Why

  • Passages you created stay in the shared catalogue, with your account no longer attached to them. Under the LangLearn Terms of Use, the passages created in LangLearn (stories, lessons and conversations, with their text, translations and audio) belong to CTO Teachings, and other learners may have them in their own playlists. So deleting your account does not delete them, and we do not remove a passage just because its author asks. There are two exceptions, and we always act on them:
    • Explicit, obscene or abusive content is removed when we find it or when it is reported to us.
    • Personal information. If a passage contains your personal information (or another person’s), name the passage in your request and we will remove it.
  • Security deletion records. We retain an email-free deletion marker and a disabled authentication UID with service timestamps, after removing former profile fields, providers and custom claims and replacing the email with a non-deliverable UID address. This prevents outstanding credentials or delayed work from restoring the account.
  • Creator emails retained internally on stories. Public attribution becomes Anonymous, without the former name or profile photo. Creator email remains on the Firestore story solely for abuse investigation and blocking malicious accounts, is never shown to learners, and is not anonymous. Retention and privacy rights are described in the privacy policy.
  • Error and crash reports already sent to our error-reporting provider (Sentry) expire on that provider's own retention schedule — on the order of weeks to months — rather than being individually retrievable. These reports do not carry your name, email, or account identifier from the app's native shell.
  • Server request logs (IP address, app version, which endpoint was called) are kept for a short period for security and debugging and then age out.
  • Anything we are legally required to retain, for as long as the law requires it.

Deleting Some Data Without Deleting Your Account

You do not have to close your account to remove data. Ask us at the same address and name what you want removed — for example your library of saved passages, a playlist, or your word progress — and we will delete just that and leave the account working. This removes the passages from your library; the passages themselves stay in the shared catalogue, on the same terms as above.

Questions

Anything unclear about this process, or about what we hold: email [email protected], message @europeandean on Telegram, or use our contact page. The full picture of what LangLearn collects is in the LangLearn privacy policy, and who owns the passages is set out in the LangLearn Terms of Use.