Privacy Policy
Effective Date: January 1, 2026 · Last Updated: September 2026
Official ZenFit Tools Documentation · Official contact: zenfittools@gmail.com
1. Commitment to Biometric Data Privacy
At ZenFit Tools (accessible via our official domains, contact: zenfittools@gmail.com), visitor privacy is our highest priority. This Privacy Policy documents how personal data is handled in full compliance with the European Union General Data Protection Regulation (GDPR), California Consumer Privacy Act (CCPA), and international privacy frameworks.
2. 100% Client-Side Computational Sandbox
All 19 calculators provided on ZenFit Tools (including body weight, circumferences, body fat percentages, maximal heart rates, one-rep maxes, running paces, and fasting timers) execute entirely within your local browser runtime via JavaScript.
Your physiological inputs, personal biometric metrics, and daily logs are NEVER transmitted to, stored on, processed by, or harvested on remote web servers or external third-party databases. You retain absolute sovereign ownership of your health inputs.
3. Google AdSense & Third-Party Advertising Compliance
We may partner with Google AdSense and certified advertising exchanges to display discrete, non-intrusive advertisements. Google, as a third-party vendor, uses cookies (including the DoubleClick cookie) to serve relevant ads based on visits across the internet.
Users may opt out of personalized interest-based advertising at any time by visiting Google Ad Settings (https://www.google.com/settings/ads) or aboutads.info.
4. Direct Communication & Inquiries
When contacting us directly via zenfittools@gmail.com or our contact portal, we only process the sender name, email address, and message content for the explicit purpose of resolving your inquiry or feedback. We never sell, lease, or distribute your email address to commercial marketing firms.