Last Updated: July 24, 2026

FlipAnswer (“答案翻翻”, referred to below as the “App”) is developed and published by Kexin Li (“we”, “us”, or “our”). We respect your privacy and are committed to protecting your personal information. This Privacy Policy explains how the App collects, uses, and protects information. Please read it carefully before using the App.

1. Information We Collect

1.1 Information the App Does Not Automatically Collect

Except when you choose to send a feedback email as described in Section 1.5, the App does not automatically collect through its features:

• Your real name, email address, or phone number
• Contacts, location information, or photo library content
• Health, financial, or biometric data
• Information that directly identifies you

We do not provide a user account system, login, or registration, and you are not required to provide personal information to use the App’s basic features.

1.2 Information Stored Locally on Your Device

The following information is stored locally on your device. Except for fields expressly described in Section 1.3 as being sent in pseudonymized analytics events, we do not upload these local records:

• Answers saved to Favorites and their source chapters
• App settings such as selected themes, card backgrounds, and language preferences
• Whether you have viewed the onboarding guide
• Custom books you create, including the title, selected cover or Emoji, answer text, and creation and update times
• Copies required to support the Home Screen widget and stored in the App Group container shared by the main App and Widget Extension, including book snapshots, answer pools, recently displayed answers, and cached membership entitlements; this data remains on the device
• A random installation identifier generated by the App. Its plain value is stored locally, while the analytics service receives only its SHA-256 hash. Deleting the App clears the local identifier. See Section 1.5 for the exception when you choose to send feedback
• A minimal record used to restore purchase analytics attribution after an App restart, including a random purchase-attempt identifier, product and membership-page context, catalog price and currency, creation time, and started / pending state. At most one record is kept per product; it expires after 7 days and is removed the next time the App launches or accesses the cache. It contains no Apple transaction or order identifier, receipt, account information, or payment information

1.3 Information Collected Through Third-Party Pseudonymized Analytics