Privacy Policy
NIX 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.
NIX Browser is a fast, private web browser with a built-in free VPN and an ad blocker. You do not need to create an account to use it.
1. Information We Collect
We do not ask you to create an account, and we do not collect your name, email address, or contacts. The App collects the following automatically through the third-party services listed in Section 3:
- Device and advertising identifiers — including the Android Advertising ID and similar device identifiers, used for advertising, analytics, and fraud prevention.
- Approximate location — derived by advertising and analytics providers from your IP address (not GPS). The App does not request device location permission and does not collect precise GPS location.
- App activity — in-app events and interactions (e.g. features used, screens viewed) for analytics and advertising measurement.
- Install and attribution data — information about how you found and installed the App (such as install events and referrer data), collected by our attribution partners to measure the effectiveness of marketing campaigns.
- Crash logs and diagnostics — crash reports and performance data used to detect and fix stability issues.
- Purchase status — the fact and type of any ad-removal purchase, processed through Google Play Billing (we do not receive or store your payment card details).
Stored only on your device (not collected by us): your browsing history, open tabs, search terms, bookmarks, and ad-blocker settings are stored locally on your device and are not transmitted to our servers. Clearing your browsing data in the App removes them from your device.
VPN traffic
When you turn on the built-in VPN, your device's internet traffic is routed through third-party VPN servers so it can reach the internet through an encrypted tunnel. Your traffic is handled by the VPN server operators while the VPN is connected. We do not use your browsing content to build a profile of you.
To show you your public IP address before and after connecting, the App queries a third-party IP-lookup service (ipify), which receives your device's public IP address in order to return it. This is used only to display the IP address to you and is not stored on our servers.
2. How We Use Information
- Provide, operate, and maintain the App and its browsing and VPN features.
- Serve and measure advertising (including personalized advertising where you have consented).
- Analyze usage to understand and improve performance and features.
- Detect, prevent, and investigate fraud, abuse, and security issues.
- Process and validate ad-removal purchases.
- Comply with legal obligations.
3. Third-Party Services
The App uses the following third-party services, which may receive the data described above. Each is governed by its own privacy policy:
| Service | Purpose | Privacy policy |
|---|---|---|
| Google Firebase (Analytics) | Usage analytics | firebase.google.com/support/privacy |
| Google Firebase (Crashlytics) | Crash & diagnostics reporting | firebase.google.com/support/privacy |
| Google Firebase (Remote Config) | Remote app configuration | firebase.google.com/support/privacy |
| Google AdMob | Advertising | policies.google.com/technologies/ads |
| Ad mediation partners (Meta Audience Network, Pangle, Mintegral, AppLovin) | Advertising / mediation | facebook.com/privacy/policy · pangle.io/privacy · mintegral.com/en/privacy · applovin.com/privacy |
| AppsFlyer | Attribution & marketing analytics | appsflyer.com/legal/services-privacy-policy |
| Adjust | Attribution & marketing analytics | adjust.com/terms/privacy-policy |
| Google Play Billing | Purchase processing | policies.google.com/privacy |
| Third-party VPN server providers | VPN connectivity | See the in-App VPN provider notice |
4. How We Share Information
We do not sell your personal information for money. We share information with the third-party providers listed in Section 3 to operate the App and serve advertising, for legal reasons (to comply with law or protect rights and safety), and in connection with a business transfer (e.g. merger or acquisition).
U.S. state privacy notice. Because the App serves personalized advertising, the sharing of advertising and device identifiers with ad partners may be considered a "sale" or "sharing" (for targeted advertising) under certain U.S. state laws. You can opt out via the ad-consent controls and your device's advertising-ID settings described above.
5. Legal Bases (EEA/UK — GDPR)
- Consent — personalized advertising and analytics where consent is required.
- Legitimate interests — core functionality, security and fraud prevention, and improving the App.
- Contract / legal obligation — processing ad-removal purchases and meeting legal requirements.
6. Data Retention
We keep information only as long as necessary for the purposes described or as required by law. Advertising and analytics identifiers are retained according to each partner's retention periods; crash and diagnostic data are retained for a limited period to diagnose issues. Data stored locally on your device remains until you clear it or uninstall the App.
7. Your Rights
- GDPR (EEA/UK): access, correction, deletion, portability, objection, restriction, withdrawal of consent, and the right to complain to a data protection authority.
- CCPA/CPRA (California) and other U.S. states: the right to know, delete, and correct, to opt out of sale/sharing and targeted advertising, and to non-discrimination.
- Other regions (e.g. LGPD, PIPEDA): equivalent rights under applicable law.
To exercise your rights, contact us at contact@tranquilmind.co. Because the App has no accounts, please include your Android Advertising ID and relevant device details so we can identify the associated data.
8. Children's Privacy
The App is intended for users aged 13 and older and is not directed to children under 13 (or the applicable minimum age of digital consent in your region). We do not knowingly collect personal information from children. As a web browser, the App can access unrestricted internet content and is not designed for children; parents and guardians should supervise minors' use. If you believe a child has provided us information, contact us and we will delete it.
9. International Data Transfers
Your information may be processed in countries other than your own, including the United States. Where required, we and our providers rely on appropriate safeguards (such as Standard Contractual Clauses) for these transfers.
10. Data Security
We use encryption in transit (HTTPS/TLS) and other reasonable technical and organizational measures to protect information. However, no method of transmission or storage is 100% secure.
11. Third-Party Content
NIX Browser lets you access websites and content operated by third parties. We do not control and are not responsible for third-party content, websites, or their privacy practices. Please review the policies of any site you visit.
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.
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