Account and Data Deletion
App Name: ddung — English Learning for Kids (Chubby Cat Teacher) Developer: W78 (Representative: Myungho Kim) Last Updated: June 5, 2026
How to Delete Your Account
ddung users can request deletion of their account and associated data using one of the following methods.
Method 1: In-App Deletion (Recommended)
- Open the ddung app
- Enter Parent Mode (top-right gear icon → enter parent PIN)
- Navigate to My Info → Account Management
- Tap Delete Account
- Confirm deletion → processed immediately
Method 2: Email Request
If app access is not available, send a deletion request by email:
Email: privacy@chubbycat.net
Subject: [Account Deletion Request] Child Profile Name
Body: Email address used at signup + child profile name
Processed within 3 business days with confirmation reply.
Data That Will Be Deleted
The following data will be permanently deleted immediately upon request.
| Data Type | Action | |---|---| | Parent email address | Deleted immediately | | Child name / profile info | Deleted immediately | | Learning progress / statistics | Deleted immediately | | Pronunciation audio recordings | Deleted immediately | | AI conversation history | Deleted immediately | | Device identifiers | Deleted immediately | | Authentication tokens / sessions | Invalidated and deleted immediately | | Push notification tokens | Deleted immediately |
Data That Will Be Retained
Some data is retained in anonymized form or kept as required by law or legitimate interest.
| Data Type | Retention Period | Legal Basis | |---|---|---| | Payment receipts / transaction records | 5 years | Korean E-Commerce Act, National Tax Act | | Fraud / dispute records | 3 years | Korean Telecommunications Privacy Act | | Anonymized usage statistics | Indefinite (non-identifiable) | Service improvement (aggregated form) | | System logs | 3 months | Security + system stability |
All retained data is maintained in a form that cannot identify individuals.
COPPA Parental Rights (Children Under 13)
Under the Children's Online Privacy Protection Act (COPPA) and applicable Korean privacy laws, parents have the following rights.
- Right to Access: Request review of all personal information collected about their child
- Right to Delete: Request deletion of all child data (see procedure above)
- Right to Refuse Collection: Opt out of further data collection
- Right to Refuse Sharing: Opt out of data sharing with third parties
Contact for rights exercise: privacy@chubbycat.net
Contact
| Item | Contact | |---|---| | Privacy / Account deletion | privacy@chubbycat.net | | General support | support@chubbycat.net | | Business entity | W78 (Representative: Myungho Kim) | | Address | 181-1 Jayang-ro, 1F #102, Gwangjin-gu, Seoul 05024, Republic of Korea | | Business registration | 206-30-88843 |
For detailed privacy policies, please see the Privacy Policy page.