Heart PHM Sizing ("we," "our," or "the App") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard information when you use our professional medical calculator application designed to calculate Predicted Heart Mass (PHM) for donor-recipient size matching.

Important: Heart PHM Sizing is intended solely for healthcare professionals. The App does NOT provide medical diagnosis, treatment, or medical advice. It is a clinical support tool and not a substitute for professional clinical judgment.

1. Information We Collect

2. How We Use Information

We use the information we collect solely for the following purposes:

• To provide and maintain your account access
• To authenticate your identity when you log in
• To display your profile information within the App
• To communicate important updates about the App or this Privacy Policy
• To provide technical support when requested

We do NOT use your information for advertising, marketing to third parties, or any purpose unrelated to the App's core functionality.

3. Data Storage and Security

Your account information is stored securely using industry-standard encryption and security practices. We implement appropriate technical and organizational measures to protect your data against unauthorized access, alteration, disclosure, or destruction.

Important: No donor, recipient, or patient medical data is stored by the App. All clinical calculations are performed locally or temporarily, and no identifiable health information is retained.

4. Data Retention

We retain your account information (name, email, role, organization) for as long as your account remains active. You may request deletion of your account at any time by contacting us.

Any data you input for calculations (donor/recipient measurements) is processed in real-time and is NOT stored. Uploaded PDF documents are processed temporarily and immediately deleted after data extraction.

5. Third-Party Services

The App uses Base44 authentication services to manage user accounts and login functionality. These services are bound by their own privacy policies and security standards. We do not share your information with any other third-party services.

We do NOT use:

• Third-party advertising networks
• Analytics services for advertising purposes
• Social media integrations that track users
• Any service that collects or sells user data

6. Data Sharing and Disclosure

We do NOT sell, rent, or share your personal information with third parties for their marketing purposes.

We may disclose your information only in the following limited circumstances:

• With your explicit consent
• To comply with legal obligations, court orders, or government requests
• To protect the rights, property, or safety of the App, our users, or the public
• In connection with a merger, acquisition, or sale of assets (with prior notice to users)

No health information is ever shared because we do not collect or store patient health information.

7. Children's Privacy

Heart PHM Sizing is NOT intended for use by children under the age of 13. The App is designed exclusively for healthcare professionals. We do not knowingly collect personal information from children. If we become aware that a child under 13 has provided us with personal information, we will take steps to delete such information.

8. International Users

If you access the App from outside the United States, please be aware that your information may be transferred to, stored, and processed in the United States or other countries where our service providers operate. By using the App, you consent to the transfer of your information to countries that may have different data protection laws than your country of residence.

9. Your Rights

You have the right to:

• Access and review your account information
• Update or correct your profile data at any time
• Request deletion of your account
• Withdraw consent for data processing
• Request a copy of your stored data

To exercise any of these rights, please contact us using the information provided below.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or for legal, operational, or regulatory reasons. We will notify you of any material changes by:

• Updating the "Last Updated" date at the top of this policy
• Sending an email notification to your registered email address
• Displaying a prominent notice within the App

Your continued use of the App after such changes constitutes your acceptance of the updated Privacy Policy.

11. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us at: