Privacy Policy

Last Modified: July 22, 2026 | Effective Date: July 22, 2026

PromBoard is a legitimate creative tool that helps users generate AI image/video prompts. This service is not operated for phishing, fraud, or any malicious purpose. We use only standard authentication methods through Firebase Authentication. Collected personal information is used solely for the purpose of providing the service and is not shared with third parties in any improper manner.

PromBoard (hereinafter "Service"), operated by Chapter28 (Representative: Taeyoon Kim, hereinafter "Company"), establishes and discloses this Privacy Policy in order to protect the personal information of users in accordance with applicable personal information protection laws, and to handle related complaints promptly and smoothly.

0. Data Controller (Business) Information

Item	Details
Company	Chapter28 (챕터28)
Representative	Taeyoon Kim
Business Registration No.	237-70-00736
Address	1412, 14 Mannam-ro, Dongnam-gu, Cheonan-si, Chungcheongnam-do, Republic of Korea
Email	ty.kim@chapter28.kr

1. Personal Information Collected

1.1 Upon Registration and Use of Service

Category	Items Collected	Purpose of Collection
Required	Email address, password (encrypted)	Member identification and authentication
Optional	Profile photo, nickname	Display in community activities
Automatically Collected	Service usage records, access logs	Service improvement and statistical analysis

1.2 Upon Google Login

When you log in via Google OAuth, we collect your Google account's email address, profile photo, and display name.

2. Purpose of Processing Personal Information

Member Management: Identity verification for membership services, maintenance and management of membership status
Service Provision: AI prompt generation, image generation, gallery functionality
Service Improvement: Development of new services, provision of customized services, statistical analysis
Customer Support: Handling of complaints, delivery of notices

3. Analytics Data Collection (Google Analytics)

We use Firebase Analytics and Google Analytics 4 for the purpose of improving our service.

3.1 Items Collected

Service usage patterns (page views, feature usage frequency)
Device information (browser type, screen size, operating system)
Anonymized user identifiers
Session information (visit time, session duration)

3.2 Purpose of Collection

Analysis and improvement of service usability
Understanding usage rates by feature
Error tracking and resolution
Optimization of user experience

3.3 Third-Party Provision

Recipient	Purpose of Provision	Retention Period
Google LLC (USA)	Provision of web analytics services	14 months from date of collection

Data is transmitted in encrypted form and is processed in accordance with Google's Privacy Policy.

4. Retention and Use Period of Personal Information

Member Information: Until withdrawal of membership (immediately destroyed upon withdrawal)
Service Usage Records: 3 years
Analytics Data: 14 months

5. Procedures and Methods for Destruction of Personal Information

Personal information of users is transferred to a separate database after the purpose has been achieved and stored for a certain period in accordance with internal policies and applicable laws, or destroyed immediately.

Electronic Files: Deleted using technical methods that make it impossible to reproduce the records
Paper Documents: Shredded or incinerated

6. Rights of Users and How to Exercise Them

Users may exercise the following rights at any time:

Request to access personal information
Request to correct or delete personal information
Request to suspend processing of personal information
Withdrawal of membership (available directly through the settings menu)

Rights may be exercised through the settings menu within the service or via email at ty.kim@chapter28.kr.

7. Personal Information Protection Officer

The Company designates the following Personal Information Protection Officer to take overall responsibility for personal information processing and to handle users' complaints and remedies related to personal information processing.

Category	Details
Name	Taeyoon Kim
Title	Representative
Organization	Chapter28
Email	ty.kim@chapter28.kr
Address	1412, 14 Mannam-ro, Dongnam-gu, Cheonan-si, Chungcheongnam-do, Republic of Korea

For reports or consultations regarding personal information infringement, you may contact the following organizations in the Republic of Korea:

Personal Information Infringement Report Center (privacy.kisa.or.kr / 118)
Personal Information Dispute Mediation Committee (kopico.go.kr / 1833-6972)
Supreme Prosecutors' Office Cyber Investigation Division (spo.go.kr / 1301)
National Police Agency Cyber Bureau (ecrm.police.go.kr / 182)

8. Changes to the Privacy Policy

If there are additions, deletions, or modifications to this Privacy Policy due to changes in laws, policies, or security technology, we will notify you through a notice within the service at least 7 days prior to the implementation of the changed Privacy Policy.