Privacy Policy

Kairo 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.

Kairo Browser is a private 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. 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 and features used (for example that a search or navigation action occurred in the App, ad-block toggles, subscription screens), and interactions with ads. These events record that an action happened; we do not log the specific web addresses or search terms you enter. 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 history — if you buy a Kairo Premium subscription, the purchase is made and paid for through Google Play Billing. Google processes the payment and keeps your purchase history in your Google account. The App receives from Google Play only the purchase record needed to deliver Premium: the subscription product, a purchase token, the purchase state (active, pending, expired or cancelled), and the purchase time. Each time you open or return to the App, it asks Google Play which subscriptions are still active so it can turn Premium on or off; the resulting Premium status is stored on your device. We never receive or store your payment card or bank details.

Your browsing activity stays on your device. Your browsing history, open tabs, bookmarks, and the web addresses you visit are stored locally on your device and are not transmitted to us or our partners. Clearing the App's data removes this locally stored information.

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, verify, and restore subscription purchases, and remove ads while your subscription is active;
• 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:

Ad consent (UMP / TCF). Where required (for example in the EEA, UK, and Switzerland), the App presents a consent request managed through Google's User Messaging Platform and the IAB Transparency & Consent Framework before personalized ads are shown. Your choice determines whether ads are personalized or non-personalized. You can withdraw consent at any time by opting out of ad personalization in your device settings (see below) or by contacting us.

Resetting or limiting your advertising ID. You can reset your advertising ID or opt out of ad personalization at any time in your device settings: Settings → Privacy → Ads (Android). Resetting the ID prevents it from being linked to prior activity; opting out signals partners not to use it for personalized ads.

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. Your purchase history is held by Google Play; we do not share it with advertising partners.

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 and verifying purchases. You may withdraw consent at any time through your device's ad settings or by contacting us.

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. Purchase history is retained by Google Play under Google's policies; the Premium status stored on your device is removed when you clear the App's data or uninstall the App.

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. To view or manage your purchase history or subscriptions, use your Google Play account (Google Play → Payments & subscriptions).

8. Children's privacy

The App is intended for users aged 18 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

Kairo 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

© 2026 Tranquil Mind Technology JSC (@Tranquil Mind Technology JSC). All rights reserved.