Privacy Policy

1. Overview

Alteri (“we”, “our”, “us”) is committed to protecting your privacy. This Privacy Policy explains what information we collect, how we use it, and what choices you have. We designed Alteri with privacy at its core: your PDF files are processed entirely in your browser and are never uploaded to our servers.

2. Information We Collect

Account information: When you create an account, we collect your email address and authentication credentials, managed securely through our authentication provider (Supabase).

Payment information: When you purchase a subscription, your payment details are processed directly by Stripe. We do not store your credit card number or full payment details on our servers.

Usage and error data: We use Sentry to collect error reports and performance data to improve the reliability of our Service. This may include browser type, device information, and anonymized interaction data.

Cookies: We use essential cookies required for the Service to function, and optional cookies for analytics and improvement purposes. You can manage your cookie preferences through our cookie banner.

3. Information We Do Not Collect

Your PDF files are processed entirely within your web browser using client-side technology. We never upload, store, access, or process your documents on our servers. We literally cannot see your files.

4. How We Use Your Information

We use the information we collect to:

• Provide, maintain, and improve the Service
• Process payments and manage your subscription
• Send transactional emails related to your account (via Resend)
• Monitor and fix errors and performance issues (via Sentry)
• Comply with legal obligations

5. Third-Party Services

We rely on the following trusted third-party services:

• Supabase — Authentication and user management
• Stripe — Payment processing
• Sentry — Error tracking and performance monitoring
• Resend — Transactional email delivery

Each of these services has its own privacy policy governing the data they process on our behalf.

6. Cookies

We use essential cookies to ensure the Service functions correctly (e.g., authentication session). We may also use optional cookies for analytics and service improvement. When you first visit our site, you will be asked to accept or decline optional cookies. You can change your preference at any time by clearing your browser cookies. Cookie consent preferences are stored locally on your device.

7. Data Retention and Deletion

We retain your account information for as long as your account is active. If you wish to delete your account and all associated data, please contact us through our contact page. We will process your request within 30 days. Payment records may be retained as required by applicable tax and financial regulations.

8. Your Rights

Depending on your location, you may have the right to:

• Access the personal data we hold about you
• Request correction of inaccurate data
• Request deletion of your data
• Object to or restrict processing of your data
• Request portability of your data

To exercise any of these rights, please contact us via our contact page.

9. Children's Privacy

The Service is not intended for use by children under the age of 16. We do not knowingly collect personal information from children. If you believe a child has provided us with personal data, please contact us and we will take steps to delete it.

10. Changes to This Policy

We may update this Privacy Policy from time to time. The most current version will always be posted on this page with the updated date. We encourage you to review this page periodically for any changes.

11. Contact

If you have any questions about this Privacy Policy or your personal data, please reach out via our contact page.