Litra.aiLitra.aiv2.22.0-beta
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Privacy Policy

Last updated: February 13, 2026

This Privacy Policy was originally written in Japanese. This English translation is provided for reference purposes only. In the event of any discrepancy between the Japanese version and this English translation, the Japanese version shall prevail.

1. Introduction

Litra.ai (hereinafter "the Service") respects user privacy and is committed to protecting personal information. This Privacy Policy explains how personal information is handled in the Service.

2. Information We Collect

The Service may collect the following information.

  • Account Information: Email address, username, etc.
  • Usage Information: Search queries, search history, service usage data
  • Technical Information: IP address, browser information, device information
  • Payment Information: Credit card information (processed through the payment service provider Stripe)

3. Purpose of Information Use

Collected information is used for the following purposes.

  • Provision and operation of the Service
  • Provision of user support
  • Service improvement and new feature development
  • Investigation and response to violations of Terms of Service
  • Sending important notifications

4. Information Sharing

We do not provide users' personal information to third parties except in the following cases.

  • When the user has given consent
  • When required by law
  • When providing to contractors necessary for service provision (such as payment processing)
  • When necessary for the protection of human life, body, or property

5. Use of External Services

The Service uses the following external services.

  • Google: Account authentication (login via OAuth 2.0; only email address is obtained)
  • OpenAlex / arXiv: Retrieval of academic paper data (metadata including paper titles, author names, affiliations, citation counts, etc.)
  • OpenAI / Anthropic: AI processing (paper relevance evaluation, summary generation, search query translation, etc.)
  • Stripe: Payment processing

Each of these services has its own privacy policy. Please note that users' information may be stored on servers in the United States in connection with the use of these services. Academic paper metadata (author names, affiliations, etc.) obtained from OpenAlex / arXiv is public domain data under the CC0 license.

Search queries and paper data sent to OpenAI / Anthropic are not used for training AI models, in accordance with each company's API policies.

6. Use of Cookies

The Service uses cookies to improve user experience and enhance the Service. You can disable cookies through your browser settings, but some features may not function properly.

7. Data Retention and Deletion

Users' personal information is retained for the period necessary to provide the Service. When an account is deleted, associated personal information will be deleted within a reasonable period. However, information that is required by law to be retained will be kept for the prescribed period.

Search queries are retained for a certain period for service improvement and usage analysis. Search history is deleted when the account is deleted.

8. Security Measures

We implement the following security measures to prevent leakage, loss, and corruption of personal information.

  • Communication Encryption: All communications are encrypted via SSL/TLS
  • Non-Retention of Payment Information: Credit card information is not stored on our servers; processing is delegated to the payment service provider (Stripe)
  • Access Control: Access to personal information is limited to the scope necessary for business operations
  • Regular Reviews: Security measures are regularly reviewed and improved as necessary

However, we cannot guarantee complete security on the Internet.

9. User Rights and Disclosure Procedures

Users have the following rights.

  • Request for disclosure of personal information
  • Correction, addition, or deletion of personal information
  • Suspension or erasure of personal information usage
  • Objection to the processing of personal information

To exercise these rights, we will respond through the following procedures.

  • Contact Method: Please contact us at the email address below
  • Identity Verification: To verify your identity, please contact us from the email address registered to your account
  • Response Time: As a general rule, we will respond within two weeks of receiving your request
  • Fees: Free of charge

Deletion of search history can be requested through the account settings page or by contacting us via email.

10. Changes to Purpose of Use

When we change the purpose of use, we will do so within a scope reasonably related to the original purpose of use. When the purpose of use is changed, we will notify users through posting on the Service or by email.

11. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify users on the Service when significant changes are made.

12. Contact Us

For inquiries regarding privacy, please contact us at the email address below.

[email protected]