Metronome Privacy Policy

1. Introduction

Welcome to Metronome, the professional metronome app also known as Pro Metronome or 专业节拍器. We take privacy and personal information security seriously. This Privacy Policy explains how we collect, use, store, and protect information when you use the app.

2. Information We Collect

2.1 Microphone Audio for the Tuner

If you use the built-in tuner, the app requires microphone access to listen to your instrument and analyze pitch. This audio is processed on your device for tuning. We do not upload microphone audio to our servers.

2.2 App Usage Statistics

After you agree to the privacy policy, the app initializes Umeng analytics to help us improve app stability and user experience. The SDK may collect anonymous or pseudonymous technical information such as device model, operating system version, device identifiers such as IDFA where available, network type, launch count, usage duration, and feature usage information.

This information does not include your name, email address, phone number, contacts, or address book information.

2.3 Local App Data

The following data is stored on your device using iOS local storage and app sandbox mechanisms:

• Metronome settings such as BPM, time signature, accent, sound, output channel, and appearance preferences
• Preset, setlist, song, training plan, and foot pedal configuration data
• Privacy agreement status and review prompt state
• Tuner preferences such as selected instrument reference

This local app data is not uploaded to our servers.

3. How We Use Information

3.1 Local Data Usage

Local data is used to provide the app's metronome, tuner, presets, setlists, training plans, appearance settings, background playback behavior, and related user preferences.

3.2 Statistical Data Usage

Anonymous or pseudonymous analytics data is used to analyze performance and stability, understand feature usage, improve the user experience, and fix bugs.

4. Data Storage and Security

4.1 Local Storage

Your app data is stored in the app sandbox and protected by iOS system security. Other apps cannot access this data through normal iOS sandbox rules.

4.2 Device Encryption

If device encryption is enabled on your device, local app data is protected by iOS system-level encryption.

4.3 Backup

If you use iCloud or computer backups, local app data may be included in those backups. These backups are managed by Apple and are subject to Apple's privacy policy.

5. Third-Party Services

5.1 Umeng Mobile Analytics SDK

6. Network Permissions

The app may use network access to send anonymous or pseudonymous usage statistics to Umeng analytics servers after privacy consent. We do not use network access to upload your metronome presets, setlists, training plans, microphone audio, or personal identifying information to our own servers.

7. Children's Privacy

This app is not designed for children under 13. We do not knowingly collect personal information from children under 13.

8. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. If we make significant changes, we will notify you through appropriate means within the app or on this website. Continued use of the app means you accept the updated Privacy Policy.

9. Your Rights and Choices

• You can modify app settings at any time in the app.
• You can delete local app data by deleting the app from your device.
• You can manage microphone permission in iOS Settings.
• You can limit tracking in iOS Settings where available.
• You can learn more about Umeng data handling through Umeng's privacy policy.

10. Contact Us

If you have questions or suggestions about this Privacy Policy, please contact us:

• Email: andyddd@gmail.com
• Bilibili: https://www.bilibili.com/read/readlist/rl1002653