Privacy Policy
Last updated: April 2026
1. Introduction
Kosty ("we", "us", "our") is a Chrome extension that compares prices on Amazon products across European markets. This privacy policy describes how we handle information when you use our extension.
2. Information we collect
Kosty does not collect personal data. We do not store your name, email address, IP address, or any other identifying information. The extension runs entirely locally in your browser.
3. Product data
When you visit an Amazon product page, the extension fetches pricing information from other Amazon markets. This data is processed locally and is not stored permanently.
4. Affiliate links
Kosty uses Amazon Associates affiliate links. When you click a link and make a purchase, we may earn a commission. Amazon may collect data according to their own privacy policy. The price you pay is not affected.
5. Cookies and tracking
Kosty does not use any cookies or tracking services of its own. We do not use Google Analytics or similar tools.
6. Third-party services
The extension communicates with Amazon's public websites to fetch pricing information, as well as a currency exchange API to convert prices. No personal data is sent in these requests.
7. Changes
We may update this policy. Any changes will be published on this page with an updated date.
8. Contact
Have questions about our privacy policy? Contact us at hello@kosty.eu.