HardHatCalc

Privacy Policy

Last updated: March 23, 2026

HardHatCalc("we", "our", "the site") is operated by Dan Dadovic. This policy explains what data we collect, why, and how we handle it.

Analytics (Google Analytics 4)

We use Google Analytics 4 (GA4) to understand how visitors use the site — which pages are visited, how long people spend on them, and which calculators get the most use. GA4 collects:

  • Pages visited and time spent
  • Device type, browser, and screen size
  • Approximate geographic location (country/region level)
  • Referral source (how you found the site)

GA4 does not collect your name, email address, or any personally identifiable information. GA4 scripts only load after you explicitly accept cookies via the consent banner. If you reject cookies, GA4 does not load and no analytics data is collected.

Cookies

We use the following cookies:

  • cookie_consent — stores your cookie preference (accepted/rejected). Expires after 1 year.
  • unit_pref — stores your preferred unit system (imperial/metric). Expires after 1 year.
  • GA4 cookies (_ga, _ga_*) — set by Google Analytics only if you accept cookies. Used to distinguish users and sessions. See Google's Privacy Policy.

Contact Form

When you submit the contact form, we collect the information you provide: your message, and optionally your name and email address. This data is sent via Resend (our email delivery provider) to our inbox. We use your contact information only to respond to your message. We do not add you to any mailing list.

Bot Protection (Cloudflare Turnstile)

The contact form uses Cloudflare Turnstile to verify that submissions come from real people, not automated bots. Turnstile may collect technical information about your browser and interaction patterns to make this determination. It does not use traditional CAPTCHAs or track you across websites.

Rate Limiting

We use Upstash Redis to rate-limit contact form submissions (3 per IP address per hour). Your IP address is hashed and stored temporarily for rate-limiting purposes only. It is not used for tracking or analytics.

Advertising

The site does not currently display advertisements. If we add ads in the future, this policy will be updated to disclose what the ad network collects, and ad scripts will be gated behind cookie consent.

Your Rights

Under GDPR and UK PECR, you have the right to access, correct, or delete any personal data we hold about you. You can change your cookie preferences at any time using the "Cookie Settings" link in the footer. To request data access or deletion, contact us via the contact form.

Data Retention

Contact form submissions (emails) are retained in our inbox for as long as needed to respond to your message, then archived or deleted. GA4 data retention is set to 14 months (Google's default), after which it is automatically deleted.

Changes to This Policy

We may update this policy when we add new features or services. The "Last updated" date at the top reflects the most recent change.

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