本应用完全在本地运行，不收集任何用户数据，不使用任何第三方服务。
用户的学习记录仅保存在设备本地，开发者无法访问或存储任何信息。
本应用支持苹果的应用内购买（In-App Purchase）功能，用于解锁内容或服务。支付过程由 Apple 通过 App Store 安全处理，可能涉及与 Apple 的服务器建立连接以完成交易验证。
本应用本身不收集、存储或传输任何用户的支付信息。所有交易信息均由 Apple 管理，开发者无法访问用户的付款详情。
如需了解 Apple 的隐私政策，请访问： https://www.apple.com/legal/privacy
本应用提供分享功能，用于将应用下载链接分享给他人。该功能不涉及用户个人信息的收集、存储或传输，也不使用任何第三方分享服务。
分享内容仅包含应用的公开信息，不包含用户生成内容或身份标识。
This app runs entirely offline. It does not collect any user data and does not use any third-party services.
All learning records are stored locally on the user's device. The developer has no access to or ability to store any personal information.
This app supports Apple's In-App Purchase functionality for unlocking content or services. The payment process is securely handled by Apple via the App Store and may involve connecting to Apple servers for transaction verification.
The app itself does not collect, store, or transmit any user payment information. All transaction data is managed by Apple, and the developer has no access to your payment details.
For more information, please refer to Apple’s privacy policy: https://www.apple.com/legal/privacy
This app includes a share feature that allows users to recommend the app by sharing a download link. This feature does not involve the collection, storage, or transmission of any personal data, and does not use any third-party sharing services.
The shared content contains only public app information and does not include user-generated content or personal identifiers.