Privacy Policy

Last Updated: February 3, 2026

Privacy First

Stacked 4U is designed with a "Local First" philosophy. Your health data, dosage logs, and peptide inventory are stored exclusively on your device. We do not maintain a central database of your personal records.

Data Storage

All personal data is stored using industry-standard local storage on your device. If you use the Backup feature, your data is exported to your personal iCloud or Google Drive account. We never have access to these files.

Analytics

We collect anonymous usage analytics to improve the app experience. This includes:

  • Device type and operating system version
  • Which features are used
  • App performance metrics

We do NOT collect your location, IP address, or any information that could identify you personally. All analytics data is anonymized and cannot be linked back to you.

You can disable analytics tracking at any time in the app's Privacy Policy section under Settings.

Third-Party Services

We use third-party services for:

  • Subscription Management: RevenueCat processes subscription payments through the App Store or Google Play. They do not have access to your health data.
  • Analytics: PostHog provides anonymous usage analytics with privacy-focused settings enabled.

These services follow their own strict privacy guidelines and do not have access to your personal health data.

Data We Do Not Collect

  • Your name, email, or contact information (unless you contact support)
  • Your health data or dosage logs
  • Your location or IP address
  • Personally identifiable information

Your Rights

Since your data is stored locally on your device:

  • You have full control over your data at all times
  • You can export or delete your data at any time
  • Uninstalling the app removes all locally stored data

Contact Us

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

privacy@presearchhub.com

Policy Updates

We may update this policy from time to time. Your continued use of the app constitutes acceptance of any changes. We will notify users of significant changes through the app.