At HandyHealth, we believe that your personal health and physiological data belongs to you. We have engineered this platform from the ground up to ensure maximum privacy: no registration, no trackers, and no server database.
1. Pure Browser Execution
Every single calculator on this hub (including BMI, Calorie, Macros, Sleep Cycles, and Pregnancy trackers) operates entirely inside your device's web browser. The logic is written in client-side Javascript, meaning that:
- Your inputs (e.g. height, weight, menstrual dates, age) never leave your device.
- No health values are transmitted over the internet or sent to external servers.
- All mathematical formulas execute locally, instantly, and privately.
2. Local Browser Storage (`localStorage`)
To save you from typing the same metrics repeatedly when navigating between calculators, our application offers to remember your general wellness profile (such as age, height, and weight).
- Storage Location: These metrics are written to your browser's local cookie-like storage (
localStorage) under the keyhealth_hub_local_profile_v1. - Total Control: You can wipe all saved data instantly at any time by clicking the Clear saved data button found in the footer of any calculator, or by clearing your browser's cookies/cache.
3. No Data Selling or Sharing
Because we do not collect, capture, or store your health data, it is mathematically impossible for us to sell, share, license, or disclose your health information to third-party advertisers, insurance providers, email brokers, or search engines.
4. Analytics and Cookie Consent Gating
We use Google Analytics (measurement ID G-FW8FQ1D0KG) to analyze anonymous page visits and general tool utilization. To protect your privacy:
- Default-Denied Consent: Cookies and tracking are blocked by default. Analytics will only initialize if you explicitly configure/allow them.
- Zero Health Payloads: Under no circumstances do we transmit physiological metrics (e.g., BMI, BMR, pregnancy dates, calories) to Google Analytics.
- IP Anonymization: IP addresses are automatically anonymized by Google Analytics at the gateway level.
5. California Privacy Rights (CCPA / CPRA)
If you are a resident of California, you are entitled to specific rights regarding your personal information:
- No Sale of Data: HandyHealth does not sell, lease, rent, or share personal health inputs or profile details to any third-party entities.
- Right to Delete: Since all profiles are stored locally in your browser's
localStorage, you can execute your right to delete at any time by clicking the Clear saved data action or by clearing your browser cache.
6. Contact Information
For questions regarding our client-side design, privacy engineering, or formulas, please write to us at: jtscientific2016@gmail.com