Privacy Policy

Last updated: September 2026

The short version

Your numbers stay on your device. All calculations run locally in your browser — we never receive, store, or sell the figures you enter.

What we collect

• Calculator inputs: nothing. Inputs are processed in your browser and discarded when you leave the page.
• Accounts: we do not offer accounts, so there is no registration data.
• Email address (only if you opt in): if you join the early-access list for a forthcoming feature, we collect the email address you provide and your answer to the optional willingness-to-pay question. We use it solely to notify you when that feature launches. We do not sell or share it, and you can ask us to delete it at any time by emailing us.
• Server logs: like most websites, our hosting provider may record standard technical logs (IP address, browser type, pages visited) for security and reliability.

Cookies & advertising

Calchorus itself does not set tracking cookies. If we display third-party advertising (for example Google AdSense), those partners may use cookies to serve and measure ads. You can control or opt out of personalized ads via Google Ads Settings and your browser's cookie controls.

Third-party links

Our pages link to official sources such as IRS.gov. We are not responsible for the privacy practices of external sites.

Changes

If this policy changes, we will update the date above. Continued use of the site after a change means you accept the updated policy.

Contact

Questions about this policy: 26839101@qq.com.