Cookie Policy

Last updated: 22 April 2026

BuildMetricLab does not set any tracking, advertising, or

analytics cookies.

Local storage only

The Site uses browser localStorage for a single purpose:

• `bml-theme` — stores your chosen theme (`light` or `dark`). If

the key is absent, your operating-system preference is used.

Calculator inputs are not stored — refreshing the page resets them.

The value we write is the string `"light"` or `"dark"`; nothing else.

This value stays on your device. We never receive it.

No third-party tracking

There are no Google Analytics, Facebook Pixel, Hotjar, or advertising

tags on this site at the time of writing. If that changes in future

we will update this page and, where required, request consent before

placing any such cookie.

Clearing data

You can clear the `bml-theme` entry at any time via your browser's

site-data settings. Doing so simply resets the theme to your OS

preference on the next page load.