Privacy Policy

Effective Date: July 1, 2026 | Last Updated: July 1, 2026

This Privacy Policy explains how GZ Medi Group (HK) Company Limited ("we", "us", "our") collects, uses, stores and protects your information when you use the Speaker Cleaner mobile application ("the App"). This policy is intended to comply with applicable U.S. privacy laws, including CCPA/CPRA, COPPA, FTC privacy guidelines and the Apple App Store Review Guidelines.

Important Notice: Speaker Cleaner is designed as a local-first utility. Core speaker cleaning activity, sound playback, vibration patterns, presets, and most app settings are processed on your device. We do not record your private conversations, upload microphone audio to our servers, or use speaker cleaning activity to identify you.

Please read this policy carefully before using the App. By continuing to use the App, you confirm that you have read and understood this policy.

1. Information We Collect and Use

We process information only in line with the principles of lawfulness, fairness, transparency and necessity.

1.1 Core Functional Data (On-Device Only)

Speaker cleaning sessions: Cleaning modes, frequencies, playback duration, volume settings, vibration options and similar functional data are generated and used locally on your device.
App preferences: Presets, reminders, selected modes, language settings and other preferences may be stored locally to provide a consistent user experience.
Audio output: The App plays tones or vibration-assisted sound patterns through your device speaker. These functions do not require us to collect personal information.

1.2 System Permissions

We may request the following permissions to deliver features. You may withdraw or change permissions at any time in your device settings:

Microphone: optional, for speaker/microphone testing, sound level checks or audio response detection. Microphone input is processed on your device. We do not record, store or upload microphone audio unless you separately choose to send diagnostic information to us.
Notifications: optional, for reminders, service notices, subscription status messages or other App-related alerts.
Network: for subscription validation, App Store purchase processing, crash diagnostics, analytics, customer support and security-related operations.

1.3 Purchase and Subscription Information

If you purchase a subscription or other in-app product, payment is handled by Apple through your Apple ID. We do not receive your full payment card number, billing address or Apple ID password. We may receive limited purchase information such as product identifier, transaction status, subscription status, renewal status and non-sensitive transaction identifiers solely to unlock paid features, prevent fraud, provide support and comply with platform requirements.

1.4 Non-Identifiable Technical Data

To improve stability, performance and user experience, we may collect de-identified or aggregated technical data such as device model, iOS version, app version, crash logs, diagnostic events, general region, language setting, feature usage statistics and network status. We do not use this data to identify you as an individual.

2. Third-Party Services and SDKs

We use third-party services only where reasonably necessary for App functionality, subscription processing, analytics, crash reporting or customer support. These providers are subject to security and data protection review.

Apple App Store / StoreKit
- Purpose of processing: Process in-app purchases, subscriptions, renewals, cancellations and refund handling through Apple.
- Categories of data processed: Apple-managed purchase and subscription information, transaction identifiers, product identifiers and subscription status.
- Third-party privacy policy: https://www.apple.com/legal/privacy/
Firebase Crashlytics (Google), if included in your App version
- Purpose of processing: Collect app crash logs and technical error reports to fix bugs and improve app stability.
- Categories of data processed: De-identified installation identifier, crash stack details, device model, operating system version and app version.
- Third-party privacy policy: https://policies.google.com/privacy
Analytics services, if included in your App version
- Purpose of processing: Collect aggregated or de-identified usage statistics to understand feature performance and improve product experience.
- Categories of data processed: De-identified device information, app events, non-precise geographic data, app version and network status.

3. How We Use Information

To provide speaker cleaning, sound playback, testing, vibration and related utility features.
To save your preferences and improve App performance.
To process purchases and manage subscription access.
To diagnose crashes, fix bugs, prevent abuse and maintain security.
To respond to your support requests and legal requests where required.

4. Data Storage and Cross-Border Transfers

Storage: Core App settings and speaker cleaning activity are generally stored on your device. Purchase data is processed by Apple. De-identified analytics or crash data may be stored by our service providers.
Cross-border transfers: As the App may be distributed globally, limited technical and de-identified data may be transferred to servers outside your country or region. We use reasonable safeguards designed to protect such data in accordance with applicable law.

5. Your Privacy Rights (U.S. Consumers)

If you are a consumer located in the United States, you may have the following rights under applicable U.S. privacy laws:

Right to Know: Request details of the personal information we process about you.
Right to Delete: Request deletion of personal information we hold, excluding data stored only on your device or data retained where legally required.
Right to Correct: Request correction of inaccurate personal information.
Right to Opt Out of Sale/Sharing: We do not sell your personal information. We do not share personal information for cross-context behavioral advertising as defined by California law.
Right to Limit Use of Sensitive Personal Information: We do not use sensitive personal information for purposes that require a limitation right under California law.
Right to Non-Discrimination: We will not discriminate against you for exercising your privacy rights.

6. Children's Privacy (COPPA)

The App is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If we become aware that we have collected personal information from a child under 13, we will delete it as required by law.

7. Data Security

We use reasonable administrative, technical and organizational measures designed to protect information processed by the App. However, no method of transmission or storage is completely secure. You are responsible for keeping your device, Apple ID and local App access secure.

8. Changes to This Privacy Policy

We reserve the right to update this policy as required by law or for operational reasons. The latest version will be posted in the App or on the relevant policy page with an updated "Last Updated" date. Your continued use of the App after changes take effect constitutes your acceptance of the revised policy.

9. Contact Us

If you have questions, complaints or requests regarding this Privacy Policy or your personal data, you may contact us:

Company: GZ Medi Group (HK) Company Limited
Email: audiocut541@gmail.com

We will respond to valid requests within the time limits required by applicable law.