Privacy Policy

Last updated: 31 October 2026 (Asia/Hong_Kong)

What we calculate

Tool inputs and results are processed in your browser. We do not upload your calculator numbers to our servers to perform the math.

Hosting & logs

The site is hosted on Vercel. Standard web server / CDN logs (IP address, user agent, URL, timing) may be collected by the hosting provider for security and reliability.

Analytics

Analytics (for example Plausible or GA4) may be added later. If enabled, we will update this page. We will not use analytics to capture the numbers you type into tools.

Cookies & affiliates

Amazon or other third parties may set cookies when you follow affiliate links, subject to their own policies. See our Affiliate Disclosure.

Contact

For privacy questions about this site, contact the site operator via the channels listed on the About page once a public contact email is published.