# Privacy Policy — Birthday Talk Chrome Extension
**Effective date:** February 21, 2026
**Developer:** Dmitry Lisin
**Contact:** dima.lisin@gmail.com
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## 1. Overview
Birthday Talk ("the Extension") is a Chrome browser extension that highlights dates of birth on web pages and displays a locally computed personality summary based on numerology. This Privacy Policy explains what information the Extension accesses, what it stores, and what it never does.
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## 2. Information We Do NOT Collect
The Extension does **not** collect, transmit, sell, share, or store any of the following:
- Personal information (name, email address, phone number, etc.)
- Browsing history or the URLs of pages you visit
- The dates of birth that appear on pages you visit
- Any content from the pages you visit
- Device identifiers, IP addresses, or location data
- Cookies or any tracking data
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## 3. Information Stored Locally
The only data stored by the Extension is your **language preference** (e.g., English, Russian, Spanish). This single setting is saved using the Chrome browser's built-in `chrome.storage.sync` API solely to remember your choice across sessions and across devices where you are signed in to the same Chrome profile.
This preference:
- Contains no personally identifiable information
- Is never transmitted to any server operated by the developer
- Can be cleared at any time by removing the Extension or clearing browser data
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## 4. How the Extension Works
All personality calculations performed by the Extension run **entirely inside your browser** using local JavaScript. No date, no calculation input or output, and no page content is ever sent over the network to any server.
When you hover over or click a highlighted date:
1. The Extension reads the date from the page text locally.
2. It performs an arithmetic calculation in your browser.
3. It displays the result directly in the browser tab.
4. The result is never stored or transmitted.
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## 5. Third-Party Services
The Extension does **not** integrate with any third-party analytics, advertising, or tracking services (including but not limited to Google Analytics, Firebase, Mixpanel, or similar).
The optional "Unlock Full Report" link (when shown) opens an external website in a new tab. That website has its own privacy policy, which you should review separately.
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## 6. Permissions
The Extension requests only one Chrome permission:
| Permission | Purpose |
|------------|---------|
| `storage` | Save your language preference locally |
The Extension uses a content script that runs on all web pages (`<all_urls>`). This is required to scan page text for date patterns and highlight them. The content script **does not** read, record, or transmit any page content.
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## 7. Children's Privacy
The Extension is not directed at children under the age of 13. We do not knowingly collect any information from children. If you believe a child has provided any information through the Extension, please contact us so we can address it.
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## 8. Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be reflected by the updated **effective date** at the top of this document. We encourage you to review this policy periodically.
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## 9. Contact
If you have any questions or concerns about this Privacy Policy or the Extension's data practices, please contact:
**Dmitry Lisin**
Email: dima.lisin@gmail.com
Website: https://app.numero69.ru
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*This policy applies solely to the Birthday Talk Chrome Extension. It does not apply to any other products or services offered by the developer.*