Privacy Policy

Last updated: January 17, 2026

Company: Mustica LLC

Data Controller: Mustica LLC

Registered Address: 30 N Gould St Ste N, Sheridan, WY, 82801, US

Contact: privacy@mustica.io · +1 (307) 207-6881

This Privacy Policy explains how Mustica (“we”, “our”, “us”) collects, uses, and protects your information when using our Services.


1. Information We Collect

1.1 Encrypted Journal Content

  • Journals are encrypted locally on your device.
  • When transmitted, they are encrypted using a temporary session key.
  • We do not store unencrypted journal content.

1.2 Derived Data (Stored)

We may store:

  • AI-generated summaries
  • Habit patterns
  • Emotional trend analysis
  • Routine suggestions
  • Behavioral metrics

These help personalize your experience.

1.3 Analytics & Logs

We collect:

  • Device metadata
  • App interaction logs
  • Crash reports
  • Button clicks (for debugging)

We do not log sensitive user content.

1.4 Web Analytics (Vercel)

We use Vercel Web Analytics integrated at the app level. It is cookie‑less and collects aggregated page views and route changes to help us understand usage and improve performance. It does not store personal journal content.

1.4 Account and Contact Information

  • Email address and support communications
  • Beta invite requests

2. Payment Information

Payments are handled by:

  • Apple (App Store)
  • Google (Google Play)
  • Stripe

We do not receive or store your full payment card details.


3. Purposes & Legal Bases

  • Provide and improve the Services (contract necessity)
  • Diagnostics, analytics, and security (legitimate interests)
  • Communications and support (consent/legitimate interests)
  • Billing and fraud prevention (legal obligation/legitimate interests)

4. AI Data Processing

  • Your data is only used to generate responses.
  • Not used to train third-party models.
  • Not shared with advertisers.

Details are in the AI Use Policy.


5. Cookies (Website)

The website may use cookies for:

  • Authentication
  • Analytics (note: our Vercel Web Analytics is cookie‑less)
  • Performance

You may disable cookies in your browser.


6. Data Storage & Location

  • All servers are located in the United States.
  • Encrypted content is processed securely.
  • No plain text journal entries are stored.

7. Data Retention

  • Derived insights until you delete your account
  • Crash logs up to 90 days
  • Metadata required for billing (per App Store / Google Play requirements)

You may request deletion anytime.


8. Your Rights

Depending on your region, you may:

  • Request export of your data
  • Request deletion
  • Request correction
  • Withdraw consent

Contact us at privacy@mustica.io.

Do Not Sell

We do not sell personal information and do not share it with advertisers.


9. Children

The Service is not intended for individuals under 18 years old.


10. Security

We implement:

  • End-to-end encryption for journals
  • TLS for all communications
  • Strict access controls
  • No plaintext storage of sensitive data

However, no system is 100% secure.


11. Sharing & Processors

We may use trusted third-party processors for hosting, analytics, crash reporting, and email. These processors are bound by confidentiality and security obligations.


12. International Transfers

If data is transferred internationally, we use appropriate safeguards consistent with applicable law.


13. Contact Us

Email: privacy@mustica.io

Website: https://mustica.io

Address: 30 N Gould St Ste N, Sheridan, WY, 82801, US

Phone: +1 (307) 207-6881