FeiFact Privacy Policy

Applies to version 1.0.0 and later · Updated: October 13, 2026 Developer: 高飞荣 (Ziyi Feiyun) · Contact: zyfly_app@qq.com

Data handling

FeiFact has no accounts, advertising, tracking or third-party analytics SDKs. The developer does not collect, upload or receive personal information, queries or usage history and runs no backend for that purpose.

On-device data

Bundled educational content and core lookup work on your device. Appearance preferences, introduction state and up to 10 recently viewed entries are stored locally using UserDefaults. Clear history in Settings; deleting the app removes its local data. Device backup and restore are controlled by your operating-system settings, not by the developer, who cannot access them.

External websites

When you choose a source, privacy or support link, your system browser visits that website. The website may receive normal request information such as your IP address, under its own privacy policy. FeiFact does not attach lookup history or personal health information and does not send browsing records to the developer.

Sharing and contact

Evidence cards are generated locally and include the selected entry's explanation, conditions and references. They are sent only when you choose a destination in the system share sheet. That destination has its own privacy practices. If you email the developer, the developer receives your message to address your feedback; avoid including unnecessary personal health information.

Children and health information

The app does not collect children's data or maintain health profiles. Content is general education, with no medical diagnosis, treatment, dose calculation or personalized medication guidance.

Changes and contact

Changes to data practices will be described with app releases and on this page. Contact zyfly_app@qq.com with questions.