Privacy Policy — Classical Cue
Last updated 20 August 2026
This policy covers the Classical Cue iOS app and this support website.
What Classical Cue collects
Nothing. There is no account, no sign-in, no analytics SDK, no advertising SDK, and no crash-reporting service. The developer receives no data about you from the app.
Audio
When you start a listening session or import a file, the audio is held in memory only for as long as the comparison takes, and is then discarded. Raw audio is never written to storage and never leaves the device. What the app keeps is the derived result — the work you confirmed, and when — not the sound.
What stays on your device
Confirmed recognition history, favourites, private listening notes and tags, and simple local counters are stored in the app's own private storage on your iPhone. They are not transmitted anywhere. Deleting the app removes all of it.
Microphone permission
The microphone is used only while you have explicitly started a listening session, and only to compare against the catalog included in the app. It is not used in the background. You can decline the permission and still use the app by importing an audio file.
Children
Classical Cue does not knowingly collect any personal information from anyone, including children.
Third parties
The app makes no network requests of its own and contains no third-party tracking code. It bundles the open-source Basic Pitch model (Apache-2.0); the model runs locally and sends nothing.
This website
This support site is a set of static pages. It sets no cookies and runs no analytics or advertising scripts. Standard server request logs may be retained by the hosting provider for operational and security purposes.
Changes
If this policy changes, the date at the top of this page changes with it.
Contact
隐私政策 — Classical Cue
最后更新：2026 年 8 月 20 日
本政策适用于 Classical Cue iOS App 与本支持站。
Classical Cue 收集什么
什么都不收集。没有账户、无需登录，没有统计 SDK、没有广告 SDK、没有崩溃上报服务。开发者不会从 App 收到任何关于你的数据。
关于音频
当你开始一次聆听或导入文件时，音频只在比对期间保存在内存中，比对结束即丢弃。原始音频从不写入存储，也从不离开你的设备。App 保存的是派生结果——你确认了哪首作品、在什么时间——而不是声音本身。
留在你设备上的内容
已确认的识别历史、收藏、私人聆听笔记与标签，以及一些简单的本地计数，保存在 App 在你 iPhone 上的私有存储里。它们不会被传输到任何地方。删除 App 会一并删除这些内容。
麦克风权限
麦克风只在你主动开始一次聆听时使用，且仅用于与 App 内置曲库比对，不会在后台使用。你也可以拒绝该权限，改用导入音频文件的方式使用 App。
儿童
Classical Cue 不会有意收集任何人的个人信息，包括儿童。
第三方
App 自身不发起任何网络请求，也不包含任何第三方追踪代码。它随包含有开源的 Basic Pitch 模型（Apache-2.0），该模型在本机运行，不发送任何数据。
关于本站
本支持站是一组静态页面，不设置 Cookie，不运行统计或广告脚本。托管服务商可能会出于运维与安全目的保留标准的服务器访问日志。
政策变更
若本政策发生变更，页首的日期会同步更新。