This is an English translation provided for reference purposes only. The Japanese version is the authoritative version. In case of any discrepancy, the Japanese version shall prevail.

Privacy Policy

Last updated: February 8, 2025

1. Information We Collect

The Service collects the following information:

Account information: Email address, Google account information (display name and email address when using Google OAuth)
Book information: Titles, author names, page counts, and other details of registered books
Reading sessions: Session start times, end times, and pages read
Reading notes: Notes and reflections related to reading sessions

2. Purpose of Use

Collected information is used for the following purposes:

Providing and operating the Service
User authentication and account management
Improving the Service and developing new features

3. Third-Party Services

The Service uses the following third-party services:

Supabase: Used for user authentication and database hosting.
Google OAuth: Used for login via Google accounts. Google's Privacy Policy applies.
Rakuten Books API: Used to retrieve book information for recommendations.
National Diet Library Search API: Used for book information searches.
Open Library API: Used to retrieve book cover images.

4. Cookies

The Service uses cookies for session management related to user authentication. These are necessary for the proper functioning of the Service and are not used for tracking purposes.

5. User Rights

Users have the following rights:

Access to their own data
Correction of their data
Request for deletion of their account and data

6. Changes to This Policy

We may modify this policy as needed. Modified policies become effective upon posting on the Service.

7. Contact

For inquiries about this policy, please contact us through the contact methods provided within the Service.