Privacy Policy

This Privacy Policy explains how the Deutsch Lernen mobile application (the “App”, package com.self.rayhan.german_vocab) handles your information. The App is an offline German vocabulary and grammar learning tool. We respect your privacy and are committed to being transparent about the limited data the App uses.

Information We Collect

Personal information: The App does not ask for, collect, or store any personal information such as your name, email address, phone number, or location. There are no user accounts and no sign-in.

Learning progress: Your learning data — words marked as learned, bookmarks, quiz results, grammar progress, and spaced-repetition state — is stored only on your device (via local storage) and is never transmitted to us or any server. Uninstalling the App removes this data.

Analytics & Crash Reporting

To improve stability and understand how features are used, the App uses the following Google services:

• Google Firebase Analytics — collects anonymous, aggregated usage data such as screens viewed, feature interactions, session length, approximate region, device model, operating-system version, and app version.
• Google Firebase Crashlytics — collects crash and error reports, including device state, stack traces, and diagnostic information at the time of a crash, to help us fix bugs.

This data is processed in a de-identified / aggregated form and is not used to personally identify you. It is handled in accordance with Google’s Privacy Policy. Learn more about how Firebase uses data.

How We Use Information

• To diagnose and fix crashes and technical problems.
• To understand which features are useful and improve the App.
• To monitor overall app performance and stability.

We do not sell your data, show personalized advertising, or share data with third parties for marketing purposes.

Data Sharing

Aggregated analytics and crash data are processed by Google (Firebase) acting as our service provider. We do not share your information with any other third parties. We may disclose information if required to do so by law.

Data Retention & Your Choices

• On-device data stays until you clear the App’s data or uninstall the App.
• Analytics & crash data is retained by Google according to Firebase’s default retention settings.
• You can limit data collection at the OS level via your Android device’s privacy and usage & diagnostics settings.

Children’s Privacy

The App is suitable for general audiences and does not knowingly collect personal information from children. The analytics described above collect only anonymous, aggregated usage and diagnostic data.

Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated “Last updated” date. Continued use of the App after changes constitutes acceptance of the revised policy.

Contact Us

If you have any questions about this Privacy Policy, please contact us at:

rayhancsse@gmail.com