Terms of Use & Privacy Policy

This app is provided for the purpose of supporting English learning.
The content and features of the app may be modified or discontinued without prior notice.
The operator is not responsible for any loss or damage caused by using or being unable to use the app.
Inquiries about this app are accepted only via the anonymous feedback form within the app.
In case of unauthorized access or inappropriate use, access may be restricted without prior notice.

Users may optionally register a username and password to store their learning progress.
Registered information is used only for authentication and progress management, and is never shared with third parties.
The app does not collect personally identifiable information such as email addresses.
Passwords are stored in encrypted (hashed) form for security.
This app uses Google Analytics to collect anonymous traffic data for improvement. Cookies are used for analytics, but no personally identifiable information is included. Please refer to Google’s Privacy Policy for details.