Last updated: February 27, 2026
TradeCalc ("the Extension") is a browser-based trading calculator developed by Avantware LTD. We are committed to protecting your privacy. This policy explains what data the Extension does and does not collect.
TradeCalc does not collect, store, transmit, or share any personal data. Specifically, the Extension does not collect:
The Extension uses Chrome's chrome.storage.local API to save your calculator preferences (such as default currency, lot size format, and decimal precision) and cached exchange rates. This data is stored entirely on your device and is never transmitted to any external server.
The Extension periodically fetches publicly available exchange rate data from a third-party API (open.er-api.com) to provide up-to-date forex rates. No personal or identifying information is sent with these requests — only a standard HTTP GET request is made. The fetched rates are cached locally on your device.
The Extension does not integrate with any analytics, advertising, or tracking services. No data is shared with third parties.
The Extension does not load or execute any remote JavaScript or WebAssembly code. All functionality is contained within the extension package.
The Extension requests the following browser permissions:
No other permissions are requested. The Extension does not access your browsing data, tabs, or any website content.
The Extension is not directed at children under the age of 13 and does not knowingly collect any data from children.
If this privacy policy is updated, the changes will be reflected on this page with an updated date. Since no data is collected, changes are unlikely.
If you have questions about this privacy policy, contact us at: