Privacy Policy

Last updated: April 13, 2026
SmartCart does not collect, transmit, or share any personal data. Everything stays on your device.

What SmartCart Does

SmartCart is a Chrome browser extension that detects Amazon product pages, reads the product title and price from the page, and stores that information locally on your device to build a personal price history.

Data We Collect

SmartCart stores the following data locally on your device only, using Chrome's built-in storage API:

Data We Do Not Collect

Data Sharing

SmartCart does not send any data to external servers. No data is sold, shared, or transmitted to third parties under any circumstances.

Affiliate Links

When you click "Buy on Amazon" in the SmartCart popup, you are taken to Amazon.com with an affiliate tracking tag (smartcart024-20) included in the URL. This tag allows SmartCart to earn a small commission if you make a purchase. Amazon's own privacy policy governs any data collected on Amazon.com.

Permissions Used

Data Retention

Price history is stored on your device indefinitely until you uninstall the extension or clear Chrome's extension storage. A maximum of 90 price entries are kept per product, after which the oldest entries are automatically removed.

Children's Privacy

SmartCart does not knowingly collect any information from children under 13. The extension does not collect personal information from any user.

Changes to This Policy

If this privacy policy changes, the updated version will be posted here with a new date. Continued use of the extension after changes constitutes acceptance of the updated policy.