Privacy policy
Last updated: October 2026
This policy describes how PrepaUK collects, uses and protects your information.
1. Data controller
PrepaUK is published by F. Azaza. F. Azaza is the data controller for the processing described here and can be reached at contact@azaza.fr. No account, name or postal address is required to use the app. 2. Information collected
PrepaUK uses Firebase anonymous authentication. No data that identifies you directly (no name, no email) is collected. The following is stored: learning progress (per-test estimates, mastery by topic, mock exam history), usage preferences (application date, level, certifier, settings), an anonymous Firebase-generated identifier, technical data (version, platform, crash reports) and content you flag as incorrect. 3. Lawful basis
We process your data on these bases: the performance of our contract with you (Art. 6(1)(b) UK GDPR) to provide the app, save your progress and manage your subscription; our legitimate interest (Art. 6(1)(f) UK GDPR) in securing the app, fixing crashes and measuring its use in aggregate; your consent (Art. 6(1)(a) UK GDPR), asked in the app, for optional features such as the assisted correction. You can withdraw your consent at any time by no longer using the feature or by writing to contact@azaza.fr. 4. Use of data
Data is used to sync your progress across devices, improve the experience and the adaptive learning algorithms, fix reported content errors and diagnose technical issues. 5. Third-party services (processors)
The app uses Google's Firebase services: Firebase Authentication (anonymous auth), Cloud Firestore (progress and reports), Firebase Crashlytics (crash reports) and Google Analytics for Firebase (anonymous usage analytics). Payments (premium subscriptions) are handled by RevenueCat, the App Store and Google Play. These providers act as our processors. No advertising is shown. 6. International data transfers
Google (Firebase) and RevenueCat process data on servers located in the United States. When your data is transferred outside the United Kingdom or the European Economic Area, it is protected by appropriate safeguards, in particular the Standard Contractual Clauses approved by the UK and the European Commission and entered into with these providers. 7. Storage and retention
Your progress data is stored locally (via Hive) and synced encrypted with Cloud Firestore. Your data is kept as long as you use the app. You can ask for its deletion at any time by writing to contact@azaza.fr with the name of the app. We delete your data within 30 days and confirm it by email. Uninstalling the app does not delete the data kept online. 8. Security
Communications with our servers are encrypted via TLS. No method of electronic transmission or storage is 100% secure. 9. Children
The app is not directed at children under 13. 10. Your rights
In accordance with the UK GDPR and the EU GDPR, you have the right to access, rectify, erase, restrict or object to the processing of your data, and the right to data portability: contact@azaza.fr. You also have the right to lodge a complaint with the Information Commissioner's Office (ICO), the UK supervisory authority (ico.org.uk), or with the data-protection authority of your country of residence. 11. Changes
Changes will be posted on this page with an updated date. 12. Assisted correction (optional)
The app can review the texts you write in the writing-practice section. This feature is optional and only runs after you explicitly agree to it. When you ask for a review, the text you have just written is sent to Google (Gemini) for analysis; under that service's terms, Google may use it to improve its services, including through human review. We therefore recommend not including sensitive personal information. No text is ever sent without your request.