Privacy Policy

Last updated: August 9, 2026

This application (hereinafter referred to as "the App") recognizes the importance of protecting users' personal information and complies with the Act on the Protection of Personal Information (hereinafter referred to as the "Personal Information Protection Act"). We strive for the appropriate handling and protection of personal information in accordance with the following privacy policy (hereinafter referred to as "this Privacy Policy").

Article 1 (Definition of Personal Information)

In this Privacy Policy, personal information is defined as personal information under Article 2, Paragraph 1 of the Personal Information Protection Act. This refers to information about a living individual that can identify a specific individual by name, date of birth, or other descriptions contained in such information (including information that can be easily collated with other information, thereby identifying a specific individual), or information containing an individual identification code.

Article 2 (Purpose of Use of Personal Information)

The App will use users' personal information for the following purposes:

To provide the services of the App.
To provide guidance and respond to inquiries regarding the App.
To respond to acts that violate our terms, policies, etc. (hereinafter referred to as "Terms, etc.") regarding the App.
To notify users of changes to the Terms, etc. regarding the App.
To analyze and improve the usage of the App.
To create statistical data related to the use of the App.
For other tasks necessary for the operation of the App.

Article 3 (Proper Acquisition of Personal Information)

The App will acquire users' personal information by appropriate means. When acquiring personal information from users, the App will specify the purpose of use and acquire personal information within the necessary scope.

Article 4 (Provision of Personal Information to Third Parties)

The App will not provide personal information to third parties without the user's consent. However, personal information may be provided to third parties without the user's consent in the following cases:

When required by law.
When it is necessary for the protection of a person's life, body, or property, and it is difficult to obtain the person's consent.
When it is particularly necessary for improving public health or promoting the sound upbringing of children, and it is difficult to obtain the person's consent.
When it is necessary to cooperate with a national agency, a local government, or a person entrusted by them in executing the affairs prescribed by laws and regulations, and obtaining the person's consent is likely to impede the execution of such affairs.

Article 5 (Management of Personal Information)

The App will strive to keep users' personal information accurate and up-to-date. The App will take necessary and appropriate security control measures to prevent unauthorized access, loss, destruction, alteration, and leakage of users' personal information.

Article 6 (Data Storage, Retention, and Deletion)

Data stored on the user's device: Training records and settings entered in the App are stored locally on the user's device. The App operator does not collect or store this data on its servers, and the App does not currently provide cloud synchronization. This data remains on the device until the user deletes it using the App's available functions, clears the App's storage through the device settings, or uninstalls the App.
Inquiry data: If a user contacts the App operator by email, the operator may retain the user's email address, message, and related correspondence for the time necessary to respond, prevent abuse, and maintain support records. Such data will normally be deleted within one year after the inquiry is resolved, unless a longer retention period is required by law or is necessary to establish, exercise, or defend legal claims.
Deletion requests: Users may request deletion of personal information held by the App operator by contacting the email address in Article 9. After verifying the request where reasonably necessary, the operator will delete the applicable information without undue delay, except where retention is required by law.

Article 7 (Disclosure, Correction, Suspension of Use, etc. of Personal Information)

Users may request the App to disclose, correct, add, delete, suspend the use of, erase, and stop the provision to third parties of their personal information (hereinafter referred to as "Disclosure, etc."). The App will respond appropriately to requests for Disclosure, etc. from users in accordance with the law.

Article 8 (Changes to the Privacy Policy)

The App may change this Privacy Policy due to amendments to laws and regulations, etc. If this Privacy Policy is changed, users will be notified by posting the revised content within the App.

Article 9 (Contact Information)

For inquiries regarding the handling of personal information in this App, please contact the following:
📧 devbyryosuke2025@gmail.com