Privacy Policy

On Android, the App uses the BLUETOOTH_CONNECT permission to check that your Bluetooth earphones are connected and to show their name and battery level. The App does not scan for nearby devices. The iPhone version needs no Bluetooth permission.

We do not request or utilize location permissions. We do not track your physical whereabouts. Bluetooth information stays on your phone and is not sent to us.

Camera (Android only). If you activate a licence bought in person, the App can open your camera so you can scan the activation QR code on your receipt. The camera is used only at that moment: no photo or video is taken, saved or sent anywhere. You can instead type the code by hand and never grant camera access.

Device identifier. To enforce the 4-device licence limit and the 7-day free trial, the App sends a device identifier to our server hosted on Vercel: on Android an identifier derived from the device's Android ID, on iPhone a random ID the App creates and keeps in the device keychain. It is not linked to your name. It is used for trial and licence checks and, once you activate a licence, it is stored with your licence record so that the licence can be restored if you reinstall the App. We keep it until you ask us to delete it (contact@dzmatrix.com).

Licence purchase record. When you buy a licence from us in person, we record your mobile number and any note you give us (for example an email address) together with your activation code, so that we can find your licence if you lose the code or change phones. The note is part of the activation code, which the App sends to our server when you activate. We keep this record until you ask us to delete it (contact@dzmatrix.com).

Usage analytics (Android only). The Android app includes Google Firebase Analytics, which automatically collects standard usage data — such as app opens, session length, device model, operating-system version and approximate country — linked to a random app-instance ID. We use it to understand how the App is used and to measure our advertising. The iPhone app contains no analytics SDK. Neither app sends audio. Account data described in Section 4 is handled separately.

This website. cleartone.dzmatrix.com uses Google Analytics to count visits and see which pages are read. It sets cookies in your browser and records a shortened IP address, the pages you open and your approximate country. It does not identify you by name. You can block it with your browser's cookie settings or Google's opt-out add-on. Google's privacy policy: policies.google.com/privacy

Digital subscriptions (Weekly, Monthly, Yearly, Lifetime) are managed and processed securely through Google Play Billing on Android and Apple In-App Purchase on iOS. Earbuds are sold in person at our booth; our website no longer takes online payments. ClearTone does not host, process, or store your credit card details.

ClearTone integrates the following third-party services. Each service's data handling is governed by their respective privacy policies:

Google Play Billing: Used for processing digital subscriptions and in-app purchases. Google manages all payment card details and billing information. Google Privacy Policy

Stripe: Previously used to process online earbuds orders on our website (online sales ended in September 2026). For those past orders, Stripe collected payment card details, email address, and billing information directly. ClearTone never received or stored your card number. Stripe Privacy Policy

Twilio: Used to deliver SMS verification codes to customers who sign in with a phone number (see Section 4). Twilio receives the phone number and the message content. Twilio Privacy Policy

Apple In-App Purchase: Used for digital subscriptions on iOS. Apple manages all payment details. Apple Privacy Policy

Google Firebase Analytics (Android app only): Collects standard usage data as described in Section 3. Google Privacy Policy

Apart from Firebase Analytics in the Android app, no third-party SDK that collects personal data is embedded in the ClearTone App. The other services listed above are contacted by our own backend or by the platform, not by an in-app SDK.

Under the Singapore Personal Data Protection Act (PDPA) and applicable data protection laws, you have the following rights:

Access: You may request a copy of any personal data we hold about you.

Correction: You may request correction of inaccurate personal data.

Withdrawal of Consent: You may withdraw consent for data collection at any time by uninstalling the App or revoking permissions in your device settings.

Deletion: You may request deletion of your account and all associated data by contacting us at contact@dzmatrix.com. We will process deletion requests within 30 business days.

Portability: You may request an export of your data in a machine-readable format.

Audio data: Never stored. Processed in real-time memory buffers only and immediately discarded.

Authentication data: Retained while your account is active. Deleted within 30 days of account deletion request.

Purchase records: Digital subscription records are managed by Google Play and Apple. Records of past online earbuds orders are retained by Stripe for the duration required by tax and accounting regulations (typically 7 years).

Device identifiers: Retained while the related trial or licence record exists.

Usage analytics (Android): Retained under Google Analytics' data-retention setting for our project, at most 14 months for user-level data.

ClearTone is developed and operated by DZ MATRIX, a business registered in Singapore (UEN 53530362M). DZ MATRIX is the data controller for the personal data described in this policy.

If you have any questions or concerns about this privacy policy or our data management practices, please contact us at: contact@dzmatrix.com.