Privacy Policy

Your Privacy Matters

Longtang is designed with privacy in mind. The app works fully offline, and your learning data stays on your device.

Data We Collect

Longtang does not collect personal data. Your vocabulary lists, review progress, and settings are stored locally on your device and are not transmitted to any server.

Analytics

We may collect anonymous, aggregated usage statistics (such as app launches and feature usage) through platform-provided analytics (Apple App Analytics, Google Play Console) to improve the app. This data cannot identify you personally.

Third-Party Services

Longtang does not include third-party advertising or tracking SDKs. The app does not share your data with third parties.

Data Storage

All your learning data (vocabulary lists, SRS review state, settings) is stored locally on your device. If you delete the app, this data is permanently removed.

Contact

If you have questions about this privacy policy, please contact us through our contact page.

Changes to This Policy

We may update this privacy policy from time to time. Any changes will be reflected on this page with an updated date.

Last updated: March 2026