Privacy Policy

Last updated: March 2026

QuantHall ("we", "our", "us") is operated by QuantHall S.L., registered in Spain. This Privacy Policy explains how we collect, use and protect your personal data when you use our website at quanthall.com and our platform services.

1. Data We Collect

We collect the following categories of personal data:

• Email address — when you join the waitlist or create an account.
• Usage data — pages visited, features used, timestamps (collected via analytics).
• Account data — username, password (hashed), plan type, preferences.
• Payment data — processed exclusively by our payment provider (Stripe). We do not store card details.

2. How We Use Your Data

• To notify you when you gain access to the platform (waitlist).
• To provide and improve our services.
• To send transactional emails (account, billing, alerts you configure).
• To communicate product updates and announcements (you can unsubscribe at any time).
• To comply with legal obligations.

3. Legal Basis (GDPR)

We process your data on the following legal bases:

• Consent — for waitlist signup and marketing communications.
• Contractual necessity — to provide the service you subscribed to.
• Legitimate interests — for platform security and analytics.

4. Data Retention

Waitlist emails are retained until the platform launches or until you request removal. Account data is retained for the duration of your subscription plus 12 months. You may request deletion at any time.

5. Data Sharing

We do not sell your personal data. We share data only with:

• Firebase (Google) — hosting and database infrastructure.
• Stripe — payment processing.
• Google Workspace — internal communications.

All providers are GDPR-compliant and process data under data processing agreements.

6. Your Rights

Under GDPR, you have the right to:

• Access the personal data we hold about you.
• Request correction or deletion of your data.
• Object to or restrict processing.
• Data portability.
• Withdraw consent at any time.

To exercise any of these rights, contact us at privacy@quanthall.com.

7. Cookies

We use only essential cookies required for the platform to function (session authentication). We do not use third-party advertising cookies. Analytics are privacy-friendly and do not track individuals across sites.

8. Security

We implement industry-standard security measures including HTTPS, hashed passwords (bcrypt), and access controls. No system is 100% secure, but we take reasonable steps to protect your data.

9. Changes to This Policy

We may update this policy. Material changes will be communicated by email or via a notice on our platform. The date at the top of this page reflects the latest revision.

10. Contact

For any privacy-related questions: privacy@quanthall.com
QuantHall S.L. — Spain