Privacy Policy - HealthCalc

1. Introduction

HealthCalc ("we", "our", "us") operates the website available at healthcalc.online. This Privacy Policy explains how we collect, use, and protect your information when you use our service.

We do NOT sell, trade, or share your personal data with third parties for marketing purposes.

2. Information We Collect

Information you provide directly:

Calculator inputs — Weight, height, age, gender, and activity level used for calculations.
Contact form submissions — Name, email, and message content when you contact us.

Information collected automatically:

Usage data — Pages visited, calculator usage, and interaction patterns (via analytics).
Device information — Browser type, operating system, and screen resolution.
Cookies — Essential cookies for functionality and optional analytics cookies.

3. How We Use Your Information

To provide and maintain our health calculation services.
To improve our tools, user experience, and content.
To respond to your inquiries and support requests.
To display relevant advertisements (via Google AdSense).

4. Data Storage & Security

All calculator data is processed and stored locally in your browser using localStorage. This means:

Your data never leaves your device. We do not collect or store your health data on any server.
We do not operate external databases for user health data. Note: Google Analytics and AdSense (third-party services) process anonymized usage data on Google's servers — see Section 5.
Clearing your browser data will remove any locally stored calculations.

Your health calculation data stays on YOUR device. We cannot access it from our servers. Anonymous usage data shared with Google Analytics and AdSense is governed by Google's privacy policy.

5. Third-Party Services

Google AdSense — Serves advertisements. Google and its partners use cookies to serve ads based on a user's prior visits to this website or other websites. Third parties may be placing and reading cookies on your browser, or using web beacons or IP addresses to collect information as a result of ad serving on our website. Users may opt out of personalized advertising by visiting Google Ads Settings. Learn more about How Google uses data when you use our partners' sites or apps.
Google Analytics — Collects anonymous usage statistics to improve our service. We use Google Analytics 4 (GA4) to understand page views, user interactions, and site performance.
Your consent choices — For visitors in the European Economic Area, the UK, and Switzerland, we ask for consent before reading or storing advertising and analytics cookies (Google's Consent Mode v2 enforces your choice). You can accept, decline, or manage your preferences in the "Privacy Settings" button, and withdraw or change your consent at any time. Declining limits ads to non-personalized versions.

6. Your Rights

Access — You can view any locally stored data in your browser's localStorage.
Delete — Clear your browser data to remove any locally stored calculations.
Opt-out — Disable cookies in your browser settings to opt out of tracking.

7. Children's Privacy

Our service is not directed to children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal data, please contact us immediately.

8. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated "Last updated" date. Continued use of the service after changes constitutes acceptance of the new policy.

9. Contact Us

If you have questions about this Privacy Policy, please contact us.