Privacy

When you visit

Your browser sends technical information needed to deliver a page, including your IP address. The hosting provider and network services may keep server logs for operation and security.

Audience measurement

GravelGrin uses Plausible Analytics to measure visits without tracking cookies. Its reports show aggregate traffic. See Plausible’s data policy for details.

Forms and comments

This site currently has no public contact form, newsletter signup or open article comments.

Planning tools

The calculators run in your browser. Calculator inputs are not sent to GravelGrin. If you choose to save a named scenario, it stays in this browser’s local storage until you delete it or clear browser data. The saved scenarios menu lets you delete individual scenarios. Downloads and tools do not require an email address. Anonymous analytics can record calculator, print and download actions without the values you enter.