Deleting your account and your data

Last updated: 14 October 2026

> Courtesy translation. Only the French version is legally binding: Suppression de compte et des données. In the event of any discrepancy, the French text prevails.

This page explains how to request deletion of your Derja account and the associated data, in accordance with Google Play's requirements and Regulation (EU) 2016/679 (GDPR).

Publisher: Ismael Dubuc, sole trader, SIREN 939 197 554, Email: contact@derja.fr

1. Delete your account from the app (immediate)

Deletion is available directly in the app, without contacting us:

Open the Derja app and sign in.
Go to My account (profile icon, top right).
Scroll down to “Delete my account”.
Confirm.

Deletion is permanent and immediate: your profile and your sign-in account are erased from our database. This is a deletion, not a mere anonymisation.

What about your Derja+ subscription?

Subscription taken out on derja.fr: it is cancelled automatically at the time of deletion, with no refund for the current period. If the cancellation fails, your account is not deleted and a message invites you to try again a few minutes later: you cannot end up without an account and with a subscription that keeps being charged.
Subscription taken out on the App Store or Google Play: deleting your account does not cancel it, as only the store can do so. The app warns you before you confirm. Cancel it yourself, ideally before deleting your account, otherwise you will keep being charged. On iPhone or iPad: Settings > your name > Subscriptions > Derja. On Android: Google Play > your avatar > Payments & subscriptions > Subscriptions > Derja.

2. Request deletion by email

If you no longer have access to the app (lost device, app uninstalled…), write to:

contact@derja.fr

giving the email address associated with your account and the subject “Account deletion”. We handle the request within 30 days at most (usually within 72 hours). If you have a subscription taken out on the website, we cancel it before deleting your account; an App Store or Google Play subscription must still be cancelled in the store (see section 1).

3. Data deleted

Deletion permanently erases:

your account and your credentials (email address, hashed password, user identifier);
your learning progress (words and phrases learned, reviews, streaks, achievements, statistics);
your preferences and your username;
your presence on the leaderboard;
your subscription status and any partner code recorded on your profile.

This data may remain for up to 3 months in our database backups, which erase themselves beyond that.

Audience measurement data (PostHog) is linked only to a random identifier specific to the device, never to your account: it cannot be found from it. It is erased at the latest 12 months after it was collected. Exception: events sent from the website before 14 October 2026, and those sent by versions of the mobile app released before the October 2026 update, remain linked to your account identifier at PostHog, for 12 months at most. For this data, write to us at contact@derja.fr: we delete in PostHog the data linked to your account.

4. Data that may be retained

Some information relating to payments is kept outside our database:

Stripe (subscription taken out on the website): your customer record and your invoices are kept for 10 years, the period required by law (accounting obligation, art. L123-22 of the French Commercial Code);
RevenueCat (subscription taken out in the app): the history of your in-app purchases remains linked to your user identifier, which no longer matches any account on our side;
Apple and Google keep their own billing data, under their own policies.

For any question: contact@derja.fr