简要说明
- 分轨不收集任何个人数据,不需要账号,没有统计分析、广告或追踪。
- 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,音频不会上传。
- 开发者没有运营任何接收你数据的服务器。
- 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
不收集。「分轨」(以下简称「本 App」)的开发者不会收集、接收、存储或出售你的任何个人信息。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,也不会在 App 之间或网站之间追踪你。
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,以下数据只保存在你的 iPhone 上,开发者无法访问:
- 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(例如 Google 隐私权政策)。
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,它们都在你的设备上运行,不会向第三方发送你的数据:
- Demucs(HTDemucs):Meta 开源的音源分离模型(MIT 许可),转换为 Core ML 后在本机运行。
- 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 会一并删除它在设备上保存的所有数据。由于开发者没有保存你的任何数据,所以不存在需要另行申请删除的副本。
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
对本隐私政策有任何疑问,请发送邮件至 demusic@liaoguoyin.com。
Privacy Policy (English)
Effective October 20, 2026. Applies to the iOS app “分轨” (Demusic).
Summary
Demusic does not collect any personal data. There is no account, analytics, advertising or tracking. Stem separation (splitting a song into vocals, drums, bass and other) runs entirely on your iPhone, and your audio is never uploaded. The developer does not operate any server that receives your data.
Data we collect
None. The app contains no analytics, advertising, crash-reporting or tracking SDKs and does not track you across apps or websites. 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 standard request information and handles it under its own privacy policy (for example, Google’s Privacy Policy).
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), converted to Core ML and run on device; and YouTubeKit (MIT License), which resolves YouTube links on device as described above. Neither sends your data to third parties.
Deleting your data
You can delete individual songs, clear all stems, or remove files in the Files app. Deleting the app removes all of its data from your device. The developer keeps no copies.
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
Questions about this policy: demusic@liaoguoyin.com.