Privacy Policy

Last Updated: 28/11/2025

Introduction

Your privacy is our highest priority. This Privacy Policy explains how our IBD (Inflammatory Bowel Disease) health tracking application ("the App") handles your personal information and health data.

The most important thing to know: Your health data NEVER leaves your device. We cannot see, access, or transmit your health information to our servers or any third party.

Our Core Privacy Commitment

Your health data belongs to you and only you. Unlike many health apps, we have designed our App to:

We cannot access your health data because it never leaves your iPhone or iPad. This is a fundamental architectural decision we made to protect your privacy.

What Data We Collect

1. Health Data Stored Locally on Your Device

The App allows you to track and store the following types of health information exclusively on your device:

Important: This data is stored ONLY on your device using iOS's secure local storage. It NEVER leaves your device and is NEVER transmitted to us or anyone else.

2. HealthKit Integration (Optional)

If you choose to enable HealthKit integration, the App may:

Important: HealthKit data exchange occurs entirely on your device between the App and Apple Health. No HealthKit data is transmitted to external servers. Your HealthKit data remains under your control as per Apple's privacy guidelines.

We do not have access to any data stored in Apple Health or any data you choose to sync with Apple Health through our App.

3. Anonymous Transaction Data

When you make in-app purchases or subscribe to premium features, payment processing is handled by RevenueCat and Apple's App Store.

What we can see:

What we CANNOT see:

All payment information is processed by Apple and RevenueCat. We never have access to your payment details.

4. Technical Data (Anonymous)

We may collect limited, anonymous technical information to improve app performance:

This technical data is collected anonymously and cannot be linked to you or your health information.

How We Use Your Data

Your Health Data (Stored Locally)

Your health data is stored exclusively on your device and is used solely by you to:

We do not use, access, or analyze your health data in any way because it never leaves your device.

Transaction Data (Anonymous)

Anonymous transaction data is used to:

This data cannot be linked to you personally or to your health information.

Technical Data (Anonymous)

Anonymous technical data is used to:

Data Storage and Security

Local Storage Security

All health data is stored on your device using:

Your health data is as secure as your iPhone or iPad. We recommend:

No Remote Storage

We do not maintain any servers or databases that store your health information. Because your health data never leaves your device, it cannot be:

Backups

Your health data may be included in:

These backups are controlled by you and Apple, not by us. We recommend reviewing Apple's privacy policy to understand how iCloud handles your backup data. If you're concerned about health data in cloud backups, you can disable iCloud Backup for the App specifically or create encrypted local backups instead.

Data Retention

Your health data remains on your device until you:

We do not retain any copies of your health data because it never reaches our systems.

Your Privacy Rights

You have complete control over your health data:

Right to Access

You can access all your health data at any time through the App's interface.

Right to Export

You can export your data in standard formats (e.g., CSV, PDF) to share with healthcare providers or for your own records.

Right to Delete

You can delete any or all of your health data at any time through the App's settings. Deletion is immediate and permanent.

Right to Opt-Out

You can:

Right to Data Portability

You can export your data and transfer it to other applications or services of your choice.

Third-Party Services

RevenueCat (Payment Processing)

We use RevenueCat to manage in-app purchases and subscriptions. RevenueCat may collect:

RevenueCat does not have access to your health data. For more information, see RevenueCat's Privacy Policy.

Apple App Store

In-app purchases are processed through Apple's App Store. Apple may collect:

Apple does not have access to your health data stored in our App (though they manage HealthKit data separately). For more information, see Apple's Privacy Policy.

No Other Third Parties

We do not integrate with any other third-party services that could access your data. We do not use:

HealthKit and Apple Health

If you grant the App permission to access HealthKit:

We comply with Apple's HealthKit guidelines, which prohibit:

Children's Privacy

The App is not intended for use by individuals under the age of 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided information through the App, please contact us immediately.

HIPAA Compliance

Important Notice: This App is designed as a personal health tracking tool for individual use. It is not a HIPAA-covered entity or business associate.

Why HIPAA May Not Apply to This App

HIPAA (Health Insurance Portability and Accountability Act) applies to:

As a personal health tracking tool where all data is stored locally on your device, we:

Your Responsibility

If you choose to share exported data from this App with healthcare providers, that data exchange is between you and your provider. We recommend:

International Users

The App is designed to comply with privacy laws worldwide, including:

Because all health data is stored locally on your device and never transmitted to external servers, many international data transfer concerns are eliminated by design.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect:

When we make changes:

We will never change our core commitment: Your health data will always remain exclusively on your device.

Data Breaches

Because your health data never leaves your device and we do not store it on any servers, a data breach of our systems cannot expose your health information.

In the unlikely event of a security incident affecting:

We will:

Your Device Security

Since all your health data is stored on your device, your device security is paramount. We recommend:

  1. Use strong authentication:
    • Enable Face ID or Touch ID
    • Use a strong device passcode (6+ digits)
    • Enable "Erase Data" after failed passcode attempts
  2. Keep software updated:
    • Install iOS updates promptly
    • Keep the App updated to the latest version
  3. Be cautious with device access:
    • Don't jailbreak your device (this compromises security)
    • Don't share your passcode with others
    • Be aware of who has physical access to your unlocked device
  4. Manage backups carefully:
    • Understand that iCloud backups may include app data
    • Consider encrypted local backups for maximum privacy
    • Use a strong Apple ID password

Contact Information

If you have questions, concerns, or requests regarding this Privacy Policy or your data privacy:

Email: [email protected]

Website: https://blackmercury.co.uk

Mailing Address:
Black Mercury
45 Sutherland Road
DA17 6JR
United Kingdom

We will respond to privacy inquiries within 28 days.

Legal Requests

In the unlikely event we receive a legal request for user data (such as a subpoena or court order):

We cannot provide health data because we do not have access to it. Your health data exists only on your device.

We may be able to provide:

We will:

Disclaimer

This App is intended for personal health tracking and informational purposes only. It is not intended to:

Always consult with qualified healthcare professionals for medical advice and treatment decisions.

Consent

By using the App, you acknowledge that you have read, understood, and agree to this Privacy Policy.

If you do not agree with this Privacy Policy, please do not use the App.


Summary: Your Privacy in Plain Language

What data do we collect?

Where is your health data stored?

Who can see your health data?

Can we sell your data?

Questions?
Contact us at [email protected]