Your learning stays yours.

YiYu is an offline-first educational app. It is designed to work without an account and without collecting personal information.

Information we collect

YiYu does not collect personal data. It does not require account registration and does not include analytics, advertising, tracking, or third-party data-collection services.

Information stored on your device

YiYu stores your recently viewed idiom History locally on your device so you can return to what you have read. This information is not sent to YiYu, the developer, or any third party. You can clear it from the History screen or remove it by deleting the app.

Network access and third parties

The app and widget use a bundled offline idiom collection. YiYu does not require network access for its core functionality and does not share information with third parties.

Children's privacy

YiYu does not knowingly collect information from children or adults because it does not collect personal information from users.

Changes to this policy

If a future YiYu version introduces a feature that changes its data practices, this policy and the App Store privacy disclosure will be updated before that feature is released.

Contact

For privacy questions, email yiyu.support@gmail.com.

Effective date: 19 July 2026