Privacy Policy

Last Updated: June 28, 2026

1. No Data Storage

Vitality Arc is designed with your privacy in mind. We do not use a backend database. All fitness data, metrics, and activities you input are processed locally on your device within your browser's local storage.

2. Local Processing

Your estimate is generated locally in your browser. We do not require an account to use the estimator.

3. Analytics

We use Google Analytics to understand general website traffic and usage patterns, but the analytics script is not loaded until you acknowledge the wellness and privacy notice. Google Analytics may then set cookies or collect device and usage information such as pages viewed, browser details, and approximate location. We use this information in aggregate to improve the website and do not use it to make health judgments about you.

Analytics paths are sanitized before they are sent. Query strings and fragments are stripped, so optional share-link payloads are not sent to Google Analytics.

4. Shared Links

If you choose to use the share feature, the app can generate a link that encodes your current estimate inputs into the URL so the page can be reopened with the same state. Share links are optional and should only be shared if you are comfortable sharing the included wellness data.

5. Contact

If you have any questions about this policy, please contact us via our main website.