倒带回声（Rewind Echo，下称"本应用"）尊重并保护您的隐私。本政策说明本应用如何处理您的信息。简单来说：我们不收集您的任何数据。
本应用没有自建服务器，不接入任何广告、统计或分析 SDK，不进行任何形式的用户追踪。您在本应用中的使用行为、听歌记录、设置偏好等均不会被开发者获取。
本应用通过 Apple 官方的 MusicKit 框架访问您的 Apple Music 资料库，仅用于在您的设备上浏览和播放音乐、显示专辑封面等信息。相关网络请求直接发送至 Apple 的服务器，受 Apple 隐私政策 约束。开发者无法看到您的资料库内容或播放记录。首次使用时系统会请求您的授权，您可随时在系统设置中撤销。
您在磁带上创作的手绘文字和贴纸保存在您的设备本地。若您启用了 iCloud，这些内容会通过 Apple 的 CloudKit 私有数据库同步到您自己的 iCloud 账户，以便在您的多台设备间同步。该数据仅您本人的 Apple 账户可以访问，开发者无法查看、访问或恢复这些内容。您可以通过删除本应用及其 iCloud 数据（设置 → Apple 账户 → iCloud → 管理账户存储空间）随时清除。
本应用的付费功能通过 Apple 的 App 内购买（StoreKit）完成。支付由 Apple 处理，开发者不会接触到您的任何支付信息（银行卡号、账单地址等）。
主屏幕小组件通过设备本地的共享存储（App Group）读取当前播放状态与磁带图片，全部处理均在您的设备上完成，不涉及任何网络上传。
本应用不需要注册账户，不收集您的姓名、邮箱、电话号码或任何身份信息。
本应用不面向 13 岁以下儿童设计，也不会有意收集儿童的任何个人信息（如前所述，本应用不收集任何人的个人信息）。
若本政策发生变更（例如未来版本引入新功能涉及数据处理），我们将在此页面更新并修改生效日期。重大变更会在应用更新说明中提示。
如对本政策有任何疑问，请联系：houhongfa@gmail.com
Rewind Echo ("the App") respects and protects your privacy. This policy explains how the App handles your information. In short: we do not collect any of your data.
The App has no servers of its own and integrates no advertising, analytics, or tracking SDKs. Your usage behavior, listening history, and preferences are never transmitted to or accessible by the developer.
The App uses Apple's MusicKit framework to access your Apple Music library, solely to browse and play music and display album artwork on your device. These network requests go directly to Apple's servers and are governed by Apple's Privacy Policy. The developer cannot see your library or playback history. The system asks for your authorization on first use, which you can revoke at any time in Settings.
Handwriting and stickers you create on cassettes are stored locally on your device. If iCloud is enabled, they sync through Apple's CloudKit private database to your own iCloud account so they follow you across your devices. This data is accessible only to your Apple Account — the developer cannot view, access, or recover it. You can delete it at any time by removing the App and its iCloud data (Settings → Apple Account → iCloud → Manage Account Storage).
Paid features are handled through Apple's In-App Purchase (StoreKit). Payment is processed by Apple; the developer never receives your payment information.
The Home Screen widget reads the current playback state and cassette image from on-device shared storage (App Group). Everything happens on your device; nothing is uploaded.
The App requires no account registration and collects no name, email, phone number, or any identity information.
The App is not directed at children under 13 and does not knowingly collect personal information from children (as noted above, it collects no personal information from anyone).
If this policy changes (for example, if a future version introduces features involving data processing), we will update this page and revise the effective date. Material changes will be noted in the App's release notes.
Questions about this policy: houhongfa@gmail.com