Privacy Policy
Onyx Browser ("the App", "we", "us", "our"), operated by Tranquil Mind Technology JSC, respects your privacy. This Privacy Policy explains what information we collect, how we use and share it, and the choices and rights you have. By using the App, you agree to this Policy.
Onyx Browser is a private, lightweight web browser with a built-in ad blocker. You do not need to create an account to use it, and we do not ask you to sign in.
1. Information We Collect
We do not ask you to provide personal information such as your name or email to use the App. We do not require an account. The App collects the following information automatically to operate, show ads, measure performance, and improve the product:
- Device and advertising identifiers — including your device's advertising ID (Google Advertising ID), and app-instance/analytics identifiers used by our analytics, advertising, and attribution partners.
- Approximate (coarse) location — derived by our advertising partners from your IP address to serve and measure ads. We do not collect precise GPS location, and the App does not request location permission.
- App activity / interactions — in-app events such as screens viewed, features used (e.g. searches performed in the App's own search box, ad-block toggles), and interactions with ads. This is used for analytics and advertising.
- Crash logs and diagnostics — crash reports, error logs, and performance/diagnostic data to keep the App stable.
- Purchase status — whether you hold an active subscription (entitlement), so we can remove ads for Premium users. Payments are processed by Google Play; we do not receive or store your payment card details.
2. How We Use Information
We use the information above to:
- Provide and operate the App (load pages, block ads/pop-ups, manage tabs, remember your settings and language);
- Serve and measure advertising, including personalized ads where you have consented;
- Perform analytics to understand usage and improve the App;
- Detect, prevent, and address fraud, abuse, and security issues;
- Process and validate subscription purchases and restore them;
- Comply with legal obligations.
3. Third-Party Services
The App uses the following third-party services, which may collect and process data as described in their own privacy policies:
| Service | Purpose | Privacy policy |
|---|---|---|
| Google Firebase (Analytics, Crashlytics, Remote Config) | Usage analytics, crash reporting, remote configuration | firebase.google.com/support/privacy |
| Google AdMob | Advertising (serving and measuring ads) | policies.google.com/privacy |
| Meta Audience Network | Advertising (ad mediation / serving) | facebook.com/about/privacy |
| Adjust | Attribution and advertising measurement | adjust.com/terms/privacy-policy |
| Google Play Billing | Processing subscription purchases | policies.google.com/privacy |
4. How We Share Information
We do not sell your personal information for money. We share the automatically-collected information described above with the third-party services in Section 3 so they can perform advertising, analytics, attribution, and payment functions on our behalf or, for ad networks, to serve and measure ads.
Because the App uses personalized advertising, certain data sharing with advertising partners may be considered a "sale" or "sharing" of personal information under some U.S. state privacy laws (e.g. California). You can opt out of personalized ads through the consent controls and advertising-ID settings described in Section 3, which limits this sharing.
We may also disclose information: (a) to comply with law, legal process, or lawful government requests; (b) to protect our rights, safety, and the security of users; and (c) as part of a merger, acquisition, or other business transfer, subject to this Policy.
5. Legal Bases (EEA/UK — GDPR)
Where GDPR applies, we rely on: consent for personalized advertising and non-essential analytics; legitimate interests for core functionality, security, fraud prevention, and product improvement; and performance of a contract / legal obligation for processing purchases. You may withdraw consent at any time via the App's Privacy options.
6. Data Retention
We retain information only as long as necessary for the purposes above or as required by law. Advertising, analytics, and attribution identifiers are retained according to each partner's retention periods; crash and diagnostic data are retained for a limited period needed to diagnose and fix issues.
7. Your Rights
Depending on where you live, you may have the following rights:
- EEA/UK (GDPR): access, rectification, erasure, portability, objection, restriction, withdrawal of consent, and the right to lodge a complaint with your data protection authority.
- California (CCPA/CPRA): the right to know, delete, and correct personal information; to opt out of the "sale" or "sharing" of personal information and targeted advertising; and to non-discrimination for exercising your rights.
- Other regions (e.g. Brazil LGPD, Canada PIPEDA): equivalent rights under applicable local law.
To exercise these rights, contact us at contact@tranquilmind.co. Because the App has no accounts, please include your device's advertising ID and relevant device details in your request so we and our partners can locate the associated data.
8. Children's Privacy
The App is intended for users aged 16 and older and is not directed to children. We do not knowingly collect personal information from children. If you believe a child has provided information to us, contact us and we will take appropriate steps to delete it. Where a higher local age of digital consent applies, that age governs.
9. International Data Transfers
Your information may be processed in countries other than your own, including the United States, where our service providers operate. Where required, we and our partners use appropriate safeguards (such as Standard Contractual Clauses) for these transfers.
10. Data Security
We use encryption in transit (HTTPS/TLS) for data sent to our partners and apply reasonable technical and organizational measures to protect information. However, no method of transmission or storage is 100% secure, and we cannot guarantee absolute security.
11. Third-Party Content
Onyx Browser lets you access websites and content operated by third parties. We do not control and are not responsible for third-party websites, content, or their privacy practices. Your use of any site you visit through the App is governed by that site's own terms and privacy policy — please review them.
12. Changes to This Policy
We may update this Policy from time to time. Material changes will be posted here with a new "Last updated" date. Your continued use of the App after changes take effect constitutes acceptance of the revised Policy.
13. Contact Us
Tranquil Mind Technology JSC
No. 3, Alley 98, Vu Trong Phung Street, Thanh Xuan Ward, Hanoi City, Vietnam
Email: contact@tranquilmind.co