QYHC Tuna隐私政策

1. Information Collection Local Only

This app requires access to your device's microphone to capture audio signals, which is essential for the tuning functionality.

Raw audio data is processed locally on your device in real time for pitch detection and is never uploaded to any server.
This app does not collect, store, or transmit any personally identifiable information (such as name, email, or location).

Audio data is used solely for real-time pitch detection and is discarded immediately after processing — it is never written to disk or recorded.
App preferences (such as theme mode, layout selection, and A4 reference frequency) are stored locally on your device via UserDefaults and are used only to restore your preferences. They contain no personally identifiable information.
Custom color override data is also stored locally in UserDefaults and is never uploaded.

All data is stored exclusively on your iPhone locally. This app does not provide any cloud sync functionality.
Since no data is uploaded, there is no risk of server-side data breaches. We recommend using iOS system-level backups (iCloud / computer backup) to protect your app settings.

🔒 Your data belongs only to you — it never leaves your device.

This app does not integrate any third-party analytics SDKs, advertising SDKs, or user-tracking SDKs.
This app does not use cookies or any similar tracking technologies.
This app does not include third-party login or social sharing features.

This app does not collect any personal data from any user, so the data handling practices are identical for children and adults.

If you have any questions regarding children's privacy, please contact us through the developer channels.

This Privacy Policy may be updated from time to time. The updated policy will be posted on this page and released with app updates.

We recommend that you review this page periodically to stay informed of the latest Privacy Policy.

📌 This policy was last updated: June 2026