Privacy Policy

Last updated: 28 April 2026

BuildMetricLab is operated by Brightscale Labs Limited, a company

registered in England & Wales (United Kingdom). This Privacy Policy

explains how we handle information for visitors located in the

United States, including the rights of California residents under the

California Consumer Privacy Act (CCPA) as amended by the

California Privacy Rights Act (CPRA).

What we collect

• Calculator inputs. The numbers you type into calculators are

processed locally in your browser. They are not transmitted to

our servers, logged, 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. It is not sold, shared

for cross-context behavioral advertising, or combined with any other

data set.

• Voluntary feedback. If you submit feedback through the site, we

store the message plus any contact email you choose to provide so

that we can reply. You can request deletion at any time.

What we do not do

• We do not set advertising or tracking cookies.
• We do not sell or share personal information for cross-context

behavioral advertising. We have not done so in the preceding 12

months and have no plans to start.

• We do not share your calculator inputs with anyone.
• We do not use your data to train AI models.
• We do not knowingly collect personal information from children

under 13. If you believe we have, contact us and we will delete it.

International data transfer

Because Brightscale Labs Limited operates from the United Kingdom,

any voluntary feedback you send may be processed on servers located

in the UK or European Economic Area. By contacting us you consent to

this transfer. We do not need to transfer the anonymous analytics

ping anywhere — there is no personal data inside it.

Your rights under California law (CCPA/CPRA)

If you are a California resident, you have the right to:

• Know what categories of personal information we collect about

you and how we use it.

• Access the specific pieces of personal information we hold

about you.

• Delete personal information we hold about you, subject to

limited statutory exceptions.

• Correct inaccurate personal information.
• Limit the use of any "sensitive personal information" we hold

(we collect none).

• Opt out of sale or sharing of personal information for

cross-context behavioral advertising. **We do not sell or share

personal information**, so there is nothing to opt out of, and you

will not see a "Do Not Sell or Share My Personal Information"

link — none is required.

• Non-discrimination. You will not receive different service for

exercising any of these rights.

You may also designate an authorized agent to make a request on your

behalf.

Your rights under other US state privacy laws

Residents of states with comprehensive privacy laws — including

Virginia (VCDPA), Colorado (CPA), Connecticut (CTDPA), Utah (UCPA),

Texas (TDPSA), Oregon, Montana, and others as those laws come into

effect — generally have access, correction, deletion, portability,

and opt-out rights similar to CCPA. Contact us using the address

below to exercise any of them.

How to exercise your rights

Email [email protected] from the address you would

like us to verify against. We respond to verifiable consumer

requests within 45 days as required by California law (extendable by

a further 45 days where reasonably necessary, with notice).

Retention

We retain feedback messages only as long as needed to respond and

maintain a basic service-quality record (typically 24 months), then

delete them. The anonymous analytics ping is retained in aggregate

form only.

Changes

We may update this policy when our practices change. The "Last

updated" date at the top reflects the current version.