We use Google Analytics to understand which pages and calculators are used. It sets cookies and collects standard usage data such as pages viewed, approximate location and device type. We do not sell personal information.
Email addresses
If you submit a form, we receive the email address and message you send and use it only to reply or to send the list you asked for.
Affiliate links
Links to Amazon are affiliate links. Amazon may set cookies when you click through, governed by Amazon's own privacy policy.
Calculators
Calculator inputs are processed in your browser and are not sent to us.
Questions: contact us.