分轨Demusic

Privacy Policy

隐私政策 Privacy

生效日期：2026 年 10 月 21 日 · 适用于 iOS App「分轨」（Demusic）

中文English

简要说明

  • 分轨不需要账号，不包含统计分析、广告或追踪 SDK；通过链接下载时的第三方网络数据处理见第 3 节。
  • 分轨（把歌曲拆成人声、鼓、贝斯和其他四轨）完全在你的 iPhone 上完成，不会为分轨上传音频。
  • 开发者没有运营自有的数据收集服务器。
  • 只有你主动「从链接添加」歌曲时，App 才会联网，并且直接连接该链接所在的服务器。

1. 我们收集什么

「分轨」（以下简称「本 App」）的开发者没有运营自有的数据收集服务器。本 App 没有账号体系，不包含任何统计分析、广告、崩溃上报或追踪 SDK。使用「从链接添加」涉及第三方服务器对网络请求信息的处理，与开发者的数据处理分开，详见第 3 节。

如果你在 iPhone 的「设置 › 隐私与安全性 › 分析与改进」中开启了「与 App 开发者共享」，Apple 可能会向开发者提供匿名的崩溃日志和使用统计。这一过程由 Apple 按照其隐私政策处理，你可以随时在系统设置中关闭。

2. 存在你设备上的数据

为了让 App 正常工作，以下数据保存在你的 iPhone 上，不会自动发送给开发者；部分数据可能按系统设置进入备份，具体如下：

  • 你导入的歌曲：保存在本 App 的「文稿」目录，你可以在「文件」App 和 Mac 访达中看到和管理。它们会按照你的系统设置包含在 iCloud 或电脑备份中。
  • 分轨文件：由本 App 在本机生成，保存在 App 内部，不包含在备份中。你可以在设置里设定空间上限或一键清除。
  • 通过链接添加的音频：缓存在 App 内部，不出现在「文件」App 中，也不包含在备份中。
  • 资料库索引与偏好：歌曲列表、每首歌的分轨组合、播放队列、随机与循环、排序方式和其他设置。
  • 分轨性能记录：每次分轨的歌曲名、设备型号、耗时、内存峰值和设备温度状态，用于在设置中查看分轨表现。这些记录只保存在本机；只有当你主动点击导出并选择分享目标时，才会离开设备。

3. 网络访问

分轨本身不需要联网，模型随 App 一起安装。本 App 只在你主动使用「从链接添加」时联网：

  • 音频或视频文件的直链：本 App 直接连接该链接所在的服务器下载文件。
  • YouTube 链接：本 App 直接连接 YouTube 获取音频、标题和封面图（包括 YouTube 公开的 oEmbed 接口）。

这些请求由你的设备直接发出，不经过开发者的任何服务器。和你用浏览器访问网页一样，对方服务器会收到你的 IP 地址、请求时间等常规网络信息，并按照其自身的隐私政策处理。

对于 YouTube 请求，Google 隐私权政策说明，即使未登录 Google 账号，Google 也会使用与浏览器、应用或设备关联的标识符来存储所收集的信息，并接收 IP 地址和请求时间戳等信息。Google 对这些信息的处理和保留受该政策约束；该政策列出的各项用途并不意味着每一项都适用于本 App 发出的每个请求。

4. 系统功能与权限

  • 正在播放信息：歌名、艺人和封面会提供给 iOS，用于锁屏、控制中心和耳机线控。这些信息由系统在本机处理。
  • 本地网络：仅当你添加的链接指向局域网里的设备（例如家里的电脑）时，系统才会请求此权限。
  • 本 App 不使用定位、通讯录、照片、相机、麦克风、健康或广告标识符。

5. 第三方组件

本 App 使用以下开源组件，其本地处理与网络行为有所不同：

  • Demucs（HTDemucs）：Meta 开源的音源分离模型（MIT 许可），转换为 Core ML 后在本机进行分轨处理，不会为分轨上传音频。
  • YouTubeKit：在本机解析 YouTube 链接（MIT 许可）。解析时会如第 3 节所述直接连接 YouTube。

6. 删除你的数据

你可以在 App 内删除单首歌曲、清除所有分轨，或在「文件」App 中删除歌曲文件。删除本 App 会删除其在设备上的本地 App 数据，但不会自动删除你导出或另存的文件，也不会自动删除 iCloud 或电脑备份中的副本；这些副本需通过相应的文件或备份管理功能处理。本地删除也不会删除 YouTube、Google 或其他链接服务器因网络请求保留的记录；这些记录的处理和保留由相应服务的隐私政策规定。开发者没有自有的数据收集服务器来保存这些歌曲或网络请求记录。

7. 儿童

本 App 不面向 13 岁以下儿童，也不会有意收集任何人的个人信息，包括儿童的信息。

8. 政策变更

如果本 App 处理数据的方式发生变化（例如新增需要联网的功能），我们会更新本页并修改顶部的生效日期。重大变更会在 App 更新说明中提示。

9. 联系我们

如果你主动通过邮件联系我们，开发者会收到你的邮箱地址及你提供的邮件内容和附件；请勿发送不必要的个人信息。对本隐私政策有任何疑问，请发送邮件至 [email protected]。

Privacy Policy (English)

Effective October 21, 2026. Applies to the iOS app “分轨” (Demusic).

Summary

Demusic requires no account and contains no analytics, advertising or tracking SDKs. Stem separation (splitting a song into vocals, drums, bass and other) runs entirely on your iPhone without uploading your audio for separation. The developer does not operate its own data collection server. Adding songs from links involves separate third-party network processing, described under Network access below.

Data we collect

The developer does not operate its own data collection server. The app contains no analytics, advertising, crash-reporting or tracking SDKs. Third-party servers process network request information when you use “Add from Link,” as described below, separately from the developer’s data handling. If you enable “Share With App Developers” in iOS Settings, Apple may share anonymous crash logs and usage statistics with the developer under Apple’s privacy policy; you can turn this off at any time.

Data stored on your device

  • Songs you import are stored in the app’s Documents folder, visible in the Files app and Finder, and included in your iCloud or computer backups according to your settings.
  • Stems are generated on device, stored inside the app and excluded from backups. You can set a storage limit or clear them in Settings.
  • Audio added from links is cached inside the app and excluded from backups.
  • Library index and preferences: song list, per-song stem mixes, play queue, shuffle and repeat, sort order and other settings.
  • Separation performance records: song title, device model, timings, peak memory and thermal state for each separation. They stay on device and only leave it if you explicitly export and share them.

Network access

Separation works offline; the model ships with the app. The app connects to the internet only when you use “Add from Link”: for a direct audio or video link it downloads the file from that server; for a YouTube link it connects directly to YouTube to fetch the audio, title and thumbnail (including YouTube’s public oEmbed endpoint). These requests go straight from your device and never pass through the developer’s servers. As with any web request, the remote server receives your IP address and request timestamps and other standard request information and handles it under its own privacy policy.

For YouTube requests, Google’s Privacy Policy states that even when you are not signed in to a Google Account, Google stores collected information with identifiers tied to your browser, app or device and receives information such as IP addresses and request timestamps. Google’s processing and retention of this information are governed by that policy; its listed purposes do not mean that every purpose applies to every request made by this app.

System features and permissions

Song title, artist and artwork are provided to iOS for the Lock Screen, Control Center and headphone controls, processed on device. Local Network access is requested only if a link you add points to a device on your local network. The app does not use location, contacts, photos, camera, microphone, health data or the advertising identifier.

Third-party components

Demucs (HTDemucs, by Meta, MIT License) is converted to Core ML and performs separation locally without uploading audio for separation. YouTubeKit (MIT License) resolves YouTube links on device and makes requests directly to YouTube as described under Network access above.

Deleting your data

You can delete individual songs, clear all stems, or remove files in the Files app. Deleting the app removes its local app data from your device, but does not automatically delete exported or separately saved files, or copies in iCloud or computer backups; manage those copies through the relevant file or backup controls. Local deletion does not delete records retained by YouTube, Google or other linked servers from network requests; their processing and retention are governed by the respective services’ privacy policies. The developer does not operate its own data collection server storing these songs or network request records.

Children

The app is not directed to children under 13 and does not knowingly collect personal information from anyone, including children.

Changes

If the way the app handles data changes, we will update this page and its effective date, and note significant changes in the app’s release notes.

Contact

If you choose to contact us by email, the developer receives your email address and the message content and attachments you provide; please avoid sending unnecessary personal information. Questions about this policy: [email protected].