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Privacy Policy

Last Updated: November 4, 2025

🔒 Privacy First: Blood Pressure Diary is designed with your privacy as our top priority. All your health data stays on your device. We do not collect, store, or transmit your blood pressure readings to any server.

1. Information We Collect

1.1 Health Data (Local Only)

When you use our Digital Diary feature, you may enter:

  • Blood pressure readings (systolic/diastolic values)
  • Pulse/heart rate measurements
  • Date and time of measurements
  • Optional notes about your measurements

Important: This data is stored ONLY on your device using browser LocalStorage and IndexedDB. We never transmit this data to our servers or any third party.

1.2 Automatically Collected Information

When you visit our website, we may automatically collect:

  • Technical Data: Browser type, device type, operating system, IP address
  • Usage Data: Pages visited, time spent, interactions (via analytics)
  • Cookies: As described in our Cookie Policy below

1.3 Downloaded Templates

When you download PDF or Excel templates, no personal information is collected or logged. Downloads are handled entirely by your browser.

2. How We Use Your Information

2.1 Your Health Data

Your blood pressure data is used exclusively by you, on your device, for:

  • Tracking your blood pressure over time
  • Generating PDF exports for doctor appointments
  • Creating backup files that you control

We have no access to this data because it never leaves your device.

2.2 Website Analytics

We use analytics to understand:

  • How visitors use our website
  • Which features are most helpful
  • How to improve user experience

Analytics data is anonymized and does not include any health information.

3. Cookies and Tracking Technologies

3.1 Essential Cookies

We use LocalStorage and IndexedDB (browser storage technologies similar to cookies) to:

  • Store your blood pressure entries locally on your device
  • Remember your backup preferences
  • Enable offline functionality (PWA)

These are essential for the Digital Diary to function and cannot be disabled.

3.2 Advertising Cookies (Google AdSense)

We use Google AdSense to display advertisements. Google may use cookies to:

  • Show relevant advertisements based on your browsing history
  • Measure ad performance
  • Prevent fraudulent clicks

Your Choices:

  • Opt out of personalized ads: Google Ad Settings
  • Learn more: How Google uses cookies in advertising

3.3 Analytics Cookies

We may use analytics services (Google Analytics or Cloudflare Analytics) to collect aggregate usage statistics. These do not contain personal health information.

4. Data Sharing and Third Parties

4.1 Your Health Data

We never share your blood pressure data. It stays on your device. We have no access to it.

4.2 Third-Party Services

We use the following third-party services:

  • Cloudflare Pages: Website hosting (does not access your health data)
  • Google AdSense: Advertising (uses cookies as described above)
  • Analytics Services: Aggregate usage statistics only

These services do not have access to your blood pressure readings.

4.3 Legal Requirements

We may disclose information if required by law, but since we don't collect health data on our servers, there is nothing to disclose.

5. Your Rights (GDPR & CCPA)

5.1 EU Users (GDPR)

If you are in the European Union, you have the right to:

  • Access: Request a copy of your data (stored locally on your device)
  • Rectification: Edit your entries in the Digital Diary
  • Erasure: Delete all entries using the "Delete All" button
  • Portability: Export your data as JSON or PDF
  • Object: Opt out of personalized advertising

5.2 California Users (CCPA)

If you are a California resident, you have the right to:

  • Know what personal information is collected (see Section 1)
  • Know if personal information is sold or shared (we do not sell data)
  • Opt out of the sale of personal information (not applicable - we don't sell)
  • Request deletion of personal information

5.3 Exercising Your Rights

For analytics or advertising data, contact us at the address below. For health data stored locally, simply use the app's export or delete features.

6. Data Security

Your blood pressure data is secure because:

  • Local Storage Only: Data never leaves your device
  • No Server Transmission: No uploads to cloud servers
  • You Control Backups: Export and store backups wherever you choose
  • HTTPS: Our website uses SSL encryption

Important: If you clear your browser data or uninstall the app, your entries will be lost unless you've created a backup.

7. Children's Privacy

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

8. International Data Transfers

Since your health data stays on your device, there are no international transfers. Our website is hosted by Cloudflare, which may process technical data (IP addresses, etc.) in various countries.

9. Changes to This Privacy 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.

10. Contact Us

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

  • Website: bloodpressurediary.com
  • Email: See Impressum

🏥 Medical Disclaimer

This tool is for tracking purposes only and is not a medical device. It is not HIPAA compliant. Always consult your healthcare provider for medical advice, diagnosis, or treatment. Do not rely solely on this tool for medical decisions.

© 2025 Blood Pressure Diary. All rights reserved.

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