Privacy Policy
Myokine
Effective Date: December 20, 2025
Last Updated: December 20, 2025
Myokine ("Company" or "We") values your privacy and complies with applicable privacy laws and regulations. This Privacy Policy explains how personal information is collected, used, shared, and protected through the Myokine app (the "App").
1. Personal Information We Collect
1.1 Required Information
We collect the following information to provide basic app functionality:
(1) Account Information (Google Sign-In)
- Email Address: Account identification and login
- Google Profile Information: Name, profile picture (optional)
- Google Unique ID: Account integration
(2) User Profile
- Nickname: User identification within the app (3-15 characters, must be unique)
- Gender: Calorie calculation (Male/Female)
- Selected Character: Exercise video display preference (1-3)
(3) Health and Physical Information (Optional)
- Height: For accurate calorie calculation (cm)
- Weight: For exercise intensity and calorie calculation (kg)
- Age Range: For age-appropriate exercise recommendations (teens, 20s, 30s, etc.)
- Input Method: Optional user input (not required)
- Purpose: Personalized workout recommendations and accurate calorie calculations
- Storage: Local device and Supabase cloud
(4) Exercise and Fitness Data
- Workout Session Records: Workout date, start/end time, exercise types
- Workout Details: Sets, reps, rest time, calories burned
- Statistics Data: Daily/weekly/monthly workout statistics, total workout time, total calories burned
- Level and Experience Points: In-app gamification elements
- Consecutive Login Days: Workout habit tracking
(5) App Activity Data
- Custom Routines: User-created workout routines
- Achievements and Badges: Earned achievements and badge information
- Recent Exercise History: Recently selected exercise list (up to 50 items)
1.2 Automatically Collected Information
(1) Device Information
- Advertising ID (GAID): Personalized ad delivery (user can opt-out)
- App Version: Compatibility verification
(2) Usage Logs
- App Crash Logs: Error analysis and improvement
- App Usage Patterns: Feature improvement and user experience enhancement
1.3 Locally Stored Information (Device Only)
The following information is NOT transmitted to servers and is stored only on your device:
- Onboarding completion status
- Selected video index
- Video mirroring settings
- Theme settings (Light/Dark mode)
- Language settings
- Voice guidance and volume settings
- Background music settings
- Notification settings
2. Purpose of Collection and Use
2.1 Service Provision
- Member registration, login, and account management
- Workout record storage and statistics provision
- Personalized workout recommendations
- Custom routine creation and management
2.2 Service Improvement
- App error analysis and fixes
- User experience improvement
- New feature development
2.3 Communication
- Service-related announcements
- Customer inquiry responses
2.4 Advertising
- Personalized ad delivery through Google AdMob
- Ad effectiveness measurement
3. Retention and Use Period
3.1 Upon Account Deletion
- Immediate deletion: All personal information including workout records, statistics, routines, achievements
- Exception: When retention is required by law
3.2 Legal Retention
- Records on contracts or withdrawal of subscription: 5 years (E-Commerce Act)
- Records on consumer complaints or dispute resolution: 3 years (E-Commerce Act)
3.3 Dormant Accounts
- Accounts with no login for 1 year or more will be converted to dormant status
- Email notification 30 days before dormant conversion
- Dormant account data is stored separately
4. Sharing Personal Information with Third Parties
We do not share your personal information with third parties except in the following cases:
4.1 Google AdMob (Advertising)
- Recipient: Google LLC
- Purpose: Personalized ad delivery
- Items Provided: Advertising ID, device information
- Retention Period: According to Google's Privacy Policy
- Right to Refuse: You can opt-out via Device Settings > Privacy > Ads > "Opt out of Ads Personalization"
4.2 Legal Requirements
- When required by law enforcement agencies
- When necessary to protect life, body, or property
5. Personal Information Processing Consignment
We consign personal information processing as follows for service provision:
| Consignee |
Consigned Tasks |
Retention and Use Period |
| Supabase Inc. |
Database hosting and management |
Until account deletion or consignment contract termination |
| Google LLC |
Google login authentication |
Until account deletion or consignment contract termination |
| Google LLC (AdMob) |
Ad delivery |
Until ad display |
Consignment contracts include provisions to prohibit processing personal information beyond the consignment purpose, technical/administrative protection measures, and restrictions on re-consignment.
6. Destruction Procedures and Methods
6.1 Destruction Procedures
- Personal information is destroyed upon account deletion or retention period expiration.
- Information that must be retained by law is separated into a separate database and destroyed after the retention period expires.
6.2 Destruction Methods
- Electronic Files: Permanently deleted in an unrecoverable manner
- Paper Documents: Shredded or incinerated
7. Installation and Operation of Automatic Collection Devices
7.1 Advertising ID
- The app collects advertising IDs for Google AdMob advertising.
- If you do not want personalized ads:
- Android: Settings > Google > Ads > Opt out of Ads Personalization
- iOS: Settings > Privacy > Tracking > Allow Apps to Request to Track OFF
7.2 Impact of Refusal
- General ads will be displayed instead of personalized ads.
- Basic app functionality will not be affected.
8. Rights and Obligations of Data Subjects
You have the following rights:
8.1 Rights
- Request access to personal information
- Request correction of personal information
- Request deletion of personal information
- Request suspension of personal information processing
- Account deletion (withdrawal of consent)
8.2 How to Exercise Rights
(1) Within the App
- Change Character: Available in Profile tab
- Background Music Settings: Available in Profile tab
(2) Email Request
For the following functions not available in the app, please email us:
- Nickname change
- Gender information modification
- Request access to personal information
- Request deletion of personal information
- Account deletion and all data removal
- Contact: hasegi.cs@gmail.com
- Processing Period: Within 10 days of request receipt
- Processing Result: Response via email
8.3 Protection of Minors
- We do not collect personal information from children under 14 without parental consent.
9. Security Measures
We take the following measures to protect personal information:
9.1 Technical Measures
- Encryption During Transmission: HTTPS/TLS protocol
- Database Encryption: Supabase Row Level Security (RLS) policies
- Password Encryption: Google OAuth 2.0 authentication
9.2 Administrative Measures
- Minimizing access to personal information
- Training for staff handling personal information
- Maintaining access logs to personal information processing systems (6 months)
9.3 Physical Measures
- Supabase cloud infrastructure security (AWS/GCP)
10. Privacy Officer
For privacy-related inquiries, complaints, and remedies, please contact:
Privacy Officer
- Name: Irisin
- Email: hasegi.cs@gmail.com
- Organization: HASEGI Inc.
Customer Service
- Email: hasegi.cs@gmail.com
11. Changes to Privacy Policy
This Privacy Policy may be changed due to changes in laws, policies, or security technologies.
- Changes will be announced in advance through in-app notifications.
- Important changes will be announced at least 7 days in advance.
- Previous versions of the Privacy Policy can be viewed within the app.
12. Privacy Violation Reporting and Consultation
For reporting or consulting on privacy violations, please contact the following organizations:
13. Supplementary Provisions
Effective Date: This Privacy Policy is effective from December 20, 2025.
HASEGI Inc.
Email: hasegi.cs@gmail.com
*This document has been prepared for compliance with Google Play Store and applicable laws.*