Last updated: March 5, 2026

Privacy Policy

Introduction

Blood Drain (“we”, “us”, “our”) operates the Blood Drain mobile application. This page informs you of our policies regarding the collection, use, and disclosure of personal data.

Information We Collect

We collect minimal data needed to provide our service:

• Account information (email address) for authentication
• Subscription data you manually enter (service names, prices, billing dates)
• Purchase history for in-app purchases (processed by RevenueCat)
• Push notification tokens for billing reminders (processed by Expo)

How We Use Your Information

We use collected data to:

• Authenticate your account
• Sync your subscription data across devices
• Process in-app purchases
• Send billing reminder notifications
• Provide customer support

We do not collect analytics, crash reports, or device diagnostics. We do not use your data for advertising or tracking purposes. We do not share your data with third parties except as needed to operate the service.

Data Storage & Security

Your subscription data is stored securely using industry-standard encryption both in transit (TLS 1.3) and at rest (AES-256). We do not store payment information directly.

Third-Party Services

We use the following third-party services:

• Supabase (data storage and authentication)
• RevenueCat (in-app purchase management)
• Expo (app distribution and push notifications)

Each service has their own privacy policy. These services only receive data necessary to operate their respective functions and do not use your data for advertising or tracking.

Bank & Financial Data

Blood Drain does NOT connect to your bank accounts. All subscription data is entered manually by you. We never have access to your banking credentials.

Data Retention

We retain your data for as long as your account is active. You can delete your account and all associated data at any time from the app settings.

Your Rights

You have the right to:

• Access your personal data
• Request data deletion
• Delete your account and all associated data from within the app

Children's Privacy

Blood Drain is not intended for children under 13. We do not knowingly collect data from children.

Changes to This Policy

We may update this policy from time to time. We will notify you of changes by updating the date at the top.

Contact Us

If you have questions about this privacy policy, contact us at blooddrainapp@gmail.com.