Gusto开口说 Privacy Policy

Last Updated: September 22, 2025

1. Information Collection

We (Shanghai Fortune Technology) collect the following types of information:

• Account Information: Username, email address, password (encrypted storage)
• Learning Data: Learning progress, performance records, usage habits
• Device Information:
  • Device type, brand, and model
  • Operating system version
  • Device identifiers: Device ID, IMEI (International Mobile Equipment Identity), ANDROID ID, OAID (Open Anonymous Device Identifier)
  • SIM card information: ICCID (Integrated Circuit Card Identifier), IMSI (International Mobile Subscriber Identity)
  • Sensor information: Accelerometer, etc. (used to detect device orientation and motion)
  • Network information: IP address, network type, carrier information, Wi-Fi SSID (wireless network name), Wi-Fi BSSID
• Usage Data: Application usage duration, feature usage frequency, error logs
• Information Collected by Third-Party SDKs:
  • PostHog Analytics SDK:
    • Third Party: PostHog
    • Purpose: Event tracking and user behavior analysis
    • Collected Information:
      • User behavior data: Page visits, feature usage, click events, etc.
      • Device information: Device type, screen size, browser information
      • Session information: Session duration, user path analysis
      • Performance data: Application loading time, error statistics
    • Privacy Policy Link: https://posthog.com/privacy
  • Sentry Error Monitoring SDK:
    • Third Party: Sentry
    • Purpose: Error tracking and performance monitoring
    • Collected Information:
      • Error information: Application crashes, exception stack traces
      • Performance data: Page loading time, API response time
      • Device information: Operating system, browser version
      • User context: User operation path during errors
    • Privacy Policy Link: https://sentry.io/privacy/
  • Easemob IM:
    • SDK Name: Easemob IM
    • Developer: Beijing Easemob Network Technology Co., Ltd.
    • Purpose: Instant messaging functionality
    • Collected Information:
      • Communication data: Chat records, voice/video call records
      • User identifiers: User ID, friend relationships
      • Device information: Device ID, network status
      • Media files: Sent and received images, audio, video files
    • SDK Privacy Policy Link: https://www.easemob.com/protocol
  • WeChat OpenSDK Android:
    • SDK Name: WeChat OpenSDK Android
    • Developer: Tencent Computer System Co., Ltd.
    • Purpose: WeChat login and sharing functionality
    • Collected Information:
      • Device identifiers: Device ID, MAC address
      • Application information: Application list, running status
      • Network information: IP address, network status
      • User interaction data: Clicks, swipes, and other interactions
    • SDK Privacy Policy Link: https://support.weixin.qq.com
  • Video SDK:
    • SDK Name: Video SDK
    • Developer: Shanghai Shengwang Technology Co., Ltd.
    • Purpose: Provide video call and live streaming functionality
    • Collected Information:
      • Device information: Device model, operating system version, hardware information
      • Network information: IP address, network quality, bandwidth information
      • Audio-video data: Video stream, encoding parameters
      • Performance data: CPU usage, memory usage
    • SDK Privacy Policy Link: https://www.shengwang.cn/SDK-privacy-policy/
  • Audio SDK:
    • SDK Name: Audio SDK
    • Developer: Shanghai Shengwang Technology Co., Ltd.
    • Purpose: Provide audio call and voice chat functionality
    • Collected Information:
      • Device information: Device model, operating system version, hardware information
      • Network information: IP address, network quality, bandwidth information
      • Audio data: Audio stream, encoding parameters
      • Performance data: CPU usage, memory usage
    • SDK Privacy Policy Link: https://www.shengwang.cn/SDK-privacy-policy/
• Purpose of Collection: For application data analytics, user behavior analysis, product optimization, error monitoring, instant messaging services, WeChat social features, and audio-video call services

2. Information Use

We use the collected information to:

• Provide English learning features and services
• Improve application functionality and user experience
• Send important service notifications and updates
• Analyze user behavior to optimize educational content

2.1 Device Information and Identifier Usage Purposes

• Device ID, IMEI, ANDROID ID, OAID:
  • Ensure application security, prevent fraud and abuse
  • Provide technical support and troubleshooting
  • Perform statistical analysis and product improvement
  • Enable device binding to protect account security
  • Advertising delivery and attribution (OAID only)
• ICCID, IMSI:
  • Optimize network connectivity
  • Provide localized services
  • Analyze user distribution
• Accelerometer:
  • Detect device orientation to optimize interface display
  • Provide motion-based interaction features (e.g., shake-to-activate)
  • Enhance user experience
• Wi-Fi SSID (Wireless Network Name):
  • Optimize network connectivity and troubleshoot issues
  • Provide location-based personalized services
  • Improve application performance across different network environments
  • Support statistical analysis and product optimization

3. Information Sharing

We will not sell, trade, or transfer your personal information to third parties unless:

• We obtain your explicit consent
• It is required by law or government authorities
• It is necessary to protect our rights, property, or safety
• It is shared with trusted service providers who agree to maintain confidentiality

4. Data Security

We place great importance on protecting your personal information and have implemented industry-standard security measures, along with organizational and management systems, to minimize the risk of data leakage, damage, misuse, unauthorized access, disclosure, or alteration. These measures include:

• Data encryption for transmission and storage
• Access control and permission management
• Regular security audits
• Employee confidentiality agreements

5. User Rights and Control

You have the right to:

• Access and update your personal information
• Request deletion of your account and data
• Opt out of certain data collection
• Understand how we use your data

5.1 Account Registration and Deletion

Account Registration: You can create an account using the registration feature provided in the app, and we will collect the basic registration information you provide.

Account Deletion: You can delete your account at any time through the following methods:

• Go to the "Personal Settings" page in the app and select the "Account Deletion" option
• Follow the prompts to complete identity verification and deletion confirmation
• Or request account deletion via our customer service email: 4tune.app@mampod.com

Consequences of Deletion: Upon account deletion, we will delete your personal information unless otherwise required by law. Account deletion is irreversible, so please consider carefully.

5.2 Permission Management

For sensitive permissions, we will:

• Clearly inform you of the purpose when requesting permissions for the first time
• Request permissions only when necessary for specific features
• Allow you to revoke granted permissions at any time through device settings
• Note that revoking permissions may affect the normal use of related features

6. Children's Privacy

We do not knowingly collect personal information from children under 13. If we discover such information has been collected, we will delete it immediately.

7. Policy Updates

We may update this privacy policy from time to time. For significant changes, we will notify you via in-app notifications or email. Continued use of the app indicates your agreement to the updated policy.

8. Contact Us

If you have any questions about this privacy policy, please contact us:

• Email: 4tune.app@mampod.com
• Website: www.gustoenglish.com