Transposer (Chinese display name: 键盘移调器; “the App”) is a MIDI transpose utility for iOS. This Privacy Policy explains how the App handles information.
We do not collect, store on our servers, sell, or share your personal information. The App does not require an account and does not connect to our backend services.
The App may store the following locally on your device only using iOS storage (UserDefaults):
This data never leaves your device unless you export or share it. If you enable MIDI Debug and export a debug file, that file may include MIDI event summaries, timestamps, connected device/source names, and MIDI message bytes. You choose whether and where to share that file through the iOS share sheet.
The App uses CoreMIDI over USB and Bluetooth MIDI (BLE MIDI) solely to communicate with compatible musical instruments. MIDI messages stay on your device. The App does not use MIDI to collect personal data, track location, or transmit data to third parties.
The App may use Bluetooth to find and connect Bluetooth MIDI keyboards. Nearby device names are used only to show and connect instruments on your device; they are not uploaded, used for tracking, or shared with third parties. Bluetooth page-turn pedals (for example AirTurn or PageFlip) are paired in iOS Settings and appear to the App as a keyboard, game controller, or media-key device. The App reads those local button events only to turn score pages.
The App may keep an audio session active so USB or Bluetooth MIDI can continue while the screen is locked or the App is in the background. The App does not access the microphone, record audio, or upload audio data.
The App does not integrate third-party analytics, advertising, or social login SDKs.
The App is not directed at children under 13, and we do not knowingly collect personal information from anyone.
We may update this policy. The “Last updated” date will reflect changes. Continued use of the App after updates constitutes acceptance.
For privacy questions, contact: 1284643046@qq.com
键盘移调器（英文名 Transposer；「本应用」）是一款 iOS MIDI 移调工具。本隐私政策说明本应用如何处理信息。
我们不会收集、不会在服务器上存储、不会出售或分享您的个人信息。 本应用无需注册账号，也不连接我们的后端服务。
本应用可能通过 iOS 本地存储（UserDefaults）仅在您的设备上保存：
除非您主动导出或分享，否则上述数据不会离开您的设备。如果您启用 MIDI Debug 并导出调试文件，该文件可能包含 MIDI 事件摘要、时间戳、已连接设备/来源名称以及 MIDI 消息字节。是否通过 iOS 分享表分享该文件、分享给谁，均由您决定。
本应用通过 USB MIDI 和蓝牙 MIDI（BLE MIDI）使用 CoreMIDI，仅用于与兼容的电子乐器通信。MIDI 消息留在您的设备上，不会通过 MIDI 收集个人数据、追踪位置或向第三方传输数据。
本应用可能使用蓝牙查找并连接蓝牙 MIDI 键盘。附近设备名称仅用于在本机显示和连接乐器，不会上传、不会用于追踪，也不会与第三方分享。蓝牙翻谱踏板（例如 AirTurn、PageFlip）在 iOS 设置中配对后，对本应用表现为键盘、手柄或多媒体按键；本应用仅在本地读取这些按键事件以翻谱。
本应用可能保持音频会话处于活动状态，以便在锁屏或进入后台时继续维持 USB 或蓝牙 MIDI。应用不会访问麦克风、不会录音，也不会上传音频数据。
本应用未集成第三方分析、广告或社交登录 SDK。
本应用不面向 13 岁以下儿童，我们也不会故意收集任何用户的个人信息。
我们可能更新本政策，「最后更新」日期将随之变更。更新后继续使用本应用即视为接受新政策。
如有隐私相关问题，请联系：1284643046@qq.com