Privacy Policy

Who we are

This website is created and operated by João Freitas (the “site owner”). If you have privacy questions, please use the contact section below.

What data we collect

The calculator is designed to work without creating an account. In normal use:

• No account registration is required
• Calculator inputs are processed locally in your browser and are not stored by us
• We do not request direct identity details (such as name, address, or phone number) to use the calculator
• For security and reliability, the hosting provider may process standard technical logs (e.g., IP address, user agent, timestamps)

Search engines and social networks may process your data independently when you discover this website through organic results or shared links. We do not receive your search queries and we do not use them to identify you.

Advertising & cookies (Google AdSense)

We use Google AdSense to display advertising. Google and its partners may use cookies and similar technologies to show personalised or non-personalised ads based on your visits to this and other websites.

In the European Economic Area (EEA), the UK and Switzerland, you should see a consent banner that lets you manage ad and cookie preferences, in line with applicable privacy requirements.

Third-party vendors (including Google) may use cookies or device identifiers to serve ads. For details, see Google's information on partner sites and ad settings.

Depending on your consent settings and region, ads may be served as personalised or non-personalised. You can also control cookies via your browser settings.

Legal bases (EEA/UK)

• Consent: where required (e.g., certain cookies and personalised advertising).
• Legitimate interests: to operate and secure the website, prevent abuse, and measure performance in an aggregated way (where permitted).

Depending on your region and choices, ads may be served as personalised or non-personalised.

Your choices & controls

• Use the consent banner (when shown) to accept, reject, or customise cookie/ad options.
• Browser controls can block or delete cookies (some features may be affected).
• Google Ads settings can help you manage ad personalisation.
• In parts of Europe, you may also use industry choice tools (e.g., YourOnlineChoices).

Helpful links: Google Ads Settings · How Google uses data · YourOnlineChoices

Retention

We do not store calculator inputs. Technical logs (if any) are retained only as long as necessary for security, troubleshooting, and service reliability, and may be managed by the hosting provider according to its policies.

Your privacy rights

Depending on your location, you may have rights such as access, rectification, deletion, restriction, objection, and data portability. Where processing is based on consent, you can withdraw it at any time (this does not affect prior processing).

If you are in Portugal, you may also have the right to lodge a complaint with the data protection authority (CNPD).

Security

We apply reasonable measures to protect the website, but no method of transmission or storage is 100% secure. Please avoid sending sensitive personal information through the contact form.

External links

The website may link to third-party websites or resources. We are not responsible for their content or privacy practices. Please review the privacy policies of any external sites you visit.

Contact

If you have questions about this Privacy Policy, please contact the site owner using the contact form at macroscalc.com/contact.

Updates

We may update this Privacy Policy occasionally. Continued use of the website after changes are published implies acceptance of the revised policy.

This document is provided for transparency and does not constitute legal advice.