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Lettercarta

Privacy Policy

Effective Date: July 29, 2025

Lettercarta ("we," "us," or "our") operates the platform available at https://lettercarta.com, which allows users to upload and translate books using manual and AI-assisted tools.

We respect your privacy and are committed to protecting your personal data. This Privacy Policy describes how we collect, use, store, and disclose your information.

1. Who We Are

Lettercarta is operated by Alex Gusev, an individual.
For any questions regarding this policy, please contact: [email protected]

2. Information We Collect

a) Account Information

When you sign up using Auth0, we collect the following data:

  • Email address
  • Display name
  • Profile picture

Authentication is managed by Auth0, with servers located in the European Union.

b) Uploaded and Translated Content

Books uploaded by users are stored permanently until deleted by the user.
Translated content is stored under the same conditions.

c) Usage and Technical Data

We collect metadata such as:

  • IP address
  • Browser and device information
  • Usage patterns

This data is used solely for improving the performance, reliability, and user experience of the service.

3. How We Use Your Data

We use the collected information to:

  • Provide and operate Lettercarta
  • Process and store books and translations
  • Improve service functionality and performance
  • Respond to user support requests
  • Communicate with users about updates or feedback

Note: Book data may be shared with third-party AI services (including but not limited to OpenAI and Google Gemini) solely for the purpose of generating translations.

4. Third-Party Services

We use the following third-party services:

  • Authentication: Auth0
  • Email sending: Amazon Web Services
  • Payments: Paddle
  • AI Translation APIs: OpenAI, Google Gemini (Used to perform AI-powered translations)

These providers may process data in accordance with their own privacy policies.

5. Cookies & Tracking

We use cookies:

  • For session management and authentication

We do not use cookies for marketing or retargeting purposes.

6. Data Retention

  • User accounts, books, and translations are retained until the user deletes them.
  • Usage logs are stored for up to 3 months and then deleted automatically.

Users may request account deletion or data export at any time by contacting [email protected].

7. Children's Privacy

Lettercarta is not intended for children where such use is restricted by local law (e.g., under 13 in the US, under 16 in some EU countries).
Children may use the service only if permitted by their local regulations and if they understand and accept these Terms with appropriate guardian consent if required.

8. Data Storage and Security

All data is stored on secure servers located in the European Union.
We implement industry-standard technical and organizational measures to safeguard your data.

9. Your Rights

You have the right to:

  • Access the personal data we hold about you
  • Request correction or deletion of your data
  • Withdraw consent for data use
  • Contact us with any privacy-related concerns

To exercise these rights, email: [email protected]

10. Changes to This Policy

We may update this Privacy Policy from time to time. Material changes will be posted on the site. Your continued use of Lettercarta after changes are posted constitutes acceptance.