Privacy Policy for Mogu Exercise

Last Updated: February 5, 2026

1. Information We Collect

1.1 Camera Data

Mogu Exercise uses the device camera exclusively for Apple’s ARKit face tracking technology. The camera captures real-time facial movements to detect chewing motions.

1.2 Health Data

The app collects and stores the following health-related data locally on your device:

Chewing count per bite
Meal session timing and duration
Statistical data about your eating habits

1.3 In-App Purchase Data

The app offers in-app purchases and subscriptions through Apple’s StoreKit 2:

Purchase Status: Premium subscription status and entitlement are stored locally on your device as a boolean flag
Transaction Verification: Purchase receipts are verified using Apple’s StoreKit 2 framework (cryptographic verification on-device)
No Payment Information: We do NOT collect, store, or have access to your credit card numbers, payment details, or purchase history
Apple’s Role: All payment processing is handled exclusively by Apple. We only receive a verification result that a purchase was successful

1.4 No Personal Information

We do NOT collect:

Names, email addresses, or other personally identifiable information
Account credentials or login information
Location data
Contacts or social media information
Payment information (credit card numbers, billing details, etc.)

2. How We Use Information

2.1 Primary Purpose

All collected data is used exclusively for:

Real-time chewing detection and counting
Displaying statistics and graphs
Tracking meal sessions
Providing visual feedback during meals
Unlocking premium features for subscribers

2.2 In-App Purchase Usage

Purchase data is used solely to:

Verify your premium subscription status
Unlock premium features within the app
Restore previous purchases on the same device or re-installation
Process subscription renewals

2.3 No Analytics or Advertising

We do NOT use your data for analytics
We do NOT use your data for advertising purposes
We do NOT sell or share your data with third parties
No third-party analytics or advertising SDKs are integrated

3. Data Storage & Security

3.1 Local Storage Only

All health data is stored locally on your device using Apple’s SwiftData framework
Face mesh data is processed in real-time and is NOT saved
Camera footage is never recorded or stored
No health data is transmitted to external servers

3.1.1 In-App Purchase Data Storage

Purchase status (premium/free) is stored locally on your device using UserDefaults
Transaction verification is performed on-device using Apple’s StoreKit 2 cryptographic receipts
We do NOT store or process payment information on our servers
All payment processing is handled by Apple’s secure payment systems

3.2 Cloud Sync

The app does NOT currently support cloud synchronization or backup. All data remains on your device.

3.3 Data Security

Data is protected by iOS device-level security
No internet connection required for core functionality
Face tracking data never leaves your device
Payment transactions are secured by Apple’s StoreKit 2 framework

4. Permissions

4.1 Camera Permission

Required: The app requires camera access to use ARKit for face tracking.

Purpose: To detect facial movements associated with chewing.

What we DON’T do:

We do NOT record photos or videos
We do NOT access your photo library
We do NOT transmit camera feed to any server

4.2 Biometric Data

Not Used: The app does NOT use Face ID, Touch ID, or any biometric authentication.

4.3 Other Permissions

The app does NOT require access to:

Location services
Contacts
Microphone
Photo library
Social media accounts

5. Data Retention & Deletion

5.1 Data Retention

Chewing and meal session data is retained indefinitely on your device until you delete it
Purchase status is retained until you uninstall the app or cancel your subscription
No automatic data deletion or expiration

5.2 User Control

You have complete control over your data:

Delete individual meal sessions within the app
Delete all data through app settings
Uninstalling the app completely removes all data
Manage subscriptions through your Apple ID settings

5.3 Data Deletion Instructions

To delete all your data:

Open Mogu Exercise
Go to Settings
Select “Delete All Data”
Confirm deletion

Alternatively, uninstalling the app will permanently remove all stored data.

Note: Deleting the app does not cancel your subscription. You must cancel subscriptions through your Apple ID settings.

6. Children’s Privacy

6.1 Age Appropriateness

Mogu Exercise is suitable for users of all ages
The app does NOT target children under 13 specifically
No account registration or personal information is required

6.2 No Collection from Children

We do NOT knowingly collect personal information from children under 13. Since the app does not collect personal information and all data is stored locally, this is not applicable.

7. Third-Party Services

7.1 Apple Frameworks and Services

The app uses the following Apple frameworks:

ARKit: For face tracking (all processing on-device)
SwiftData: For local data storage
SwiftUI: For user interface
Combine: For reactive programming
StoreKit 2: For in-app purchases and subscriptions

7.2 Apple’s Payment Processing

All purchases are processed through Apple’s App Store payment system
Apple handles payment collection, transaction security, and receipt verification
We do NOT collect, store, or have access to your payment information
Purchase receipts and transaction data are managed by Apple
Subscription billing and renewals are managed by Apple

7.3 No Other Third-Party Services

We do NOT use:

Third-party analytics services (e.g., Google Analytics, Firebase Analytics)
Third-party advertising networks
Third-party crash reporting services
Third-party payment processors
Social media integrations

8. Changes to Privacy Policy

8.1 Updates

We may update this privacy policy from time to time to reflect:

Changes in our app functionality
Changes in legal requirements
Clarifications of our practices

8.2 Notification

Significant changes will be:

Posted in the app
Updated on this page with a new “Last Updated” date

8.3 Your Responsibility

We encourage you to review this privacy policy periodically. Continued use of the app after changes indicates acceptance of the new policy.

9. Data Export & Portability

9.1 Data Export

Currently, the app does NOT support data export functionality. All data is stored in Apple’s SwiftData format and is accessible only within the app.

9.2 Future Enhancements

We may consider adding data export features in future updates, which would allow you to:

Export your chewing statistics
Backup your meal session data
Transfer data to a new device

10. Legal Compliance

Under GDPR, you have the right to:

Access your data (all data is in the app)
Delete your data (through app settings or uninstallation)
Data portability (not currently supported)
Object to processing (you can stop using the app at any time)

10.2 CCPA (California)

Under CCPA:

We do NOT sell personal information
All data is stored locally on your device
You can delete all data by uninstalling the app

10.3 Other Jurisdictions

We comply with applicable data protection laws in all jurisdictions where the app is available.

11. Security Measures

11.1 Technical Safeguards

Data is protected by iOS sandbox security
No network transmission of health or facial data
No server-side storage vulnerability
All payment processing uses Apple’s encrypted payment systems

11.2 Purchase Security

Payment transactions are secured by Apple’s StoreKit 2 framework
Transaction verification uses Apple’s cryptographic receipt validation
We do not store or process payment information on our servers

11.3 Best Practices

We follow iOS development best practices:

Use of secure storage frameworks
No hardcoded sensitive data
Regular security reviews

12. Subscription Management

12.1 Managing Your Subscription

Subscriptions are managed through your Apple ID:

Open Settings on your iOS device
Tap your Apple ID at the top
Tap “Subscriptions”
Select “Mogu Exercise”
Cancel or modify your subscription

12.2 Auto-Renewal

Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period
Your account will be charged for renewal within 24 hours prior to the end of the current period
You can manage or cancel auto-renewal at any time through your Apple ID settings

12.3 Refund Policy

All purchases and subscriptions are processed through Apple’s App Store. Refund requests must be submitted to Apple Support:

Report a Problem: https://reportaproblem.apple.com
Apple Support: https://support.apple.com

13. Contact Information

13.1 Questions & Concerns

If you have questions, concerns, or requests regarding this privacy policy or our data practices:

Email: xiaotiantakumi@gmail.com

App Name: Mogu Exercise Developer: Takumi Oda

13.2 Complaints

If you believe we have violated applicable privacy laws:

Contact us directly at the email above
You may also file a complaint with:
- Your local data protection authority (EU)
- The Federal Trade Commission (USA)
- Appropriate regulatory body in your jurisdiction

14. Transparency & Accountability

14.1 Our Commitment

We are committed to:

Transparency about our data practices
Protecting your privacy
Providing you control over your data
Complying with applicable privacy laws

14.2 Privacy by Design

Mogu Exercise is built with privacy as a core principle:

All health data processing happens on your device
No account or personal information required
No data sharing with third parties
No advertising or analytics
Payment processing handled exclusively by Apple

Summary: Mogu Exercise respects your privacy. All face tracking and health data is processed locally on your device. We never transmit or store your facial data on external servers. No personal information is collected. In-app purchases are processed securely through Apple’s payment systems, and we do not have access to your payment information.

Download Source: This privacy policy is also available within the app in the Settings section.