Privacy Policy
Last updated: 20 April 2026
BuildMetricLab is operated by Brightscale Labs Limited
(registered in England & Wales). We take your privacy seriously and
process personal data in accordance with the UK General Data
Protection Regulation (UK GDPR) and the Data Protection Act 2018.
What we collect
- Calculator inputs: the numbers you type into calculators are
processed locally in your browser. They are not transmitted to
our servers or stored on our end.
- Anonymous usage analytics: we record a per-page ping containing
page path, approximate device type (mobile/desktop), and referrer
hostname. This contains no cookies, no IP addresses, and no
information that can identify you personally.
- Voluntary feedback: if you submit feedback through the site, we
store the message plus any contact email you choose to provide, to
reply to you. You can request deletion at any time.
What we do not do
- We do not set advertising or tracking cookies.
- We do not sell personal data to third parties.
- We do not share your calculator inputs with anyone.
- We do not use your data to train AI models.
Legal basis
Anonymous analytics rely on our legitimate interest in
understanding site usage to improve the tools. Feedback
correspondence relies on your consent (pressing Send).
Your rights
Under UK GDPR you may request access to, correction of, or deletion
of any personal data we hold about you, and object to processing.
Contact: [email protected].
If you are unhappy with how we handle your data you may complain to
the Information Commissioner's Office (ico.org.uk).