隐私政策
Privacy Policy · Music from Zero to Composing
生效日期 Effective date：2026-11-07
一句话：《音乐从零到作曲》不收集任何个人数据。没有账号，没有服务器，没有广告，没有数据分析或追踪，也不含任何第三方 SDK。
In short: Music from Zero to Composing collects no personal data. No accounts, no servers, no ads, no analytics or tracking, and no third-party SDKs.
保存在你设备上的数据 Data on your device
你的阅读进度、收藏、笔记、练习作答与自评、自测成绩、游戏成绩、记忆卡、实验记录、作曲工作室里的作品和各项设置，只保存在你自己的设备上，不会上传。删除 App，或在「设置 → 备份 → 清空学习记录」里清空，这些数据就会被删除。
Your reading progress, bookmarks, notes, exercise answers and self-ratings, quiz and game scores, flashcards, lab records, studio songs and settings are stored only on your device and are never uploaded. Deleting the app, or using Settings → Backup → Erase Progress, removes them.
麦克风 Microphone
只有调音器和「唱准」游戏会在你允许后使用麦克风，用来实时识别你唱或弹的音高。声音只在本机分析，不录音、不保存、不上传。你可以随时在系统「设置 → 隐私与安全性 → 麦克风」里关掉。
Only the tuner and the Sing in Tune game use the microphone, after you allow it, to detect the pitch you sing or play in real time. The sound is analyzed on your device only; it is never recorded, stored or uploaded. You can turn access off anytime in Settings → Privacy & Security → Microphone.
导出与备份 Exports and backups
只有你主动导出备份、或在作曲工作室里导出音频 / MIDI 时，才会生成文件，存到你自己选择的位置。
Files are created only when you choose to export a backup, or to export audio or MIDI from the studio, and are saved where you choose.
网络 Network
全书内容和所有声音都在 App 里，不需要联网。App 本身不连接任何服务器；只有你在设置里点开支持页、隐私政策或使用条款时，系统浏览器才会打开这些网页。
All book content and all sounds are built into the app, so it works offline. The app itself connects to no servers; only when you open the support page, privacy policy or terms from Settings does your browser load those web pages.
儿童 Children
本 App 不收集任何人的个人信息，包括儿童。
The app collects no personal information from anyone, including children.
政策变更 Changes
如果本政策有变化，我们会在本页公布新版本并更新生效日期。
If this policy changes, we will post the new version on this page and update the effective date.
联系我们 Contact
对本政策有任何疑问，请发邮件到 dongxiyunei@gmail.com。
Questions about this policy? Email dongxiyunei@gmail.com.