Privacy Policy for EchoBuzz

Last Updated: September 10, 2026

Welcome to EchoBuzz ("we," "our," or "us"). This Privacy Policy explains how Kangtao Zonghui (Chongqing) Information Technology Co., Ltd. collects, uses, discloses, and safeguards your information when you use our mobile application (the "App"). We are committed to protecting your personal information and your right to privacy in compliance with Google Play Store policies and applicable data protection laws.

1. Age Restrictions (18+)

EchoBuzz is strictly intended for users who are 18 years of age or older. We do not knowingly collect, maintain, or use personal information from anyone under the age of 18. If we become aware that a user under 18 has provided us with personal information, we will take immediate steps to delete such information and terminate the associated account.

2. Information We Collect

A. Information You Provide to Us

• Account Information: When you register, we may collect basic account details necessary to provide the service.
• Chat and Interaction Data: To provide you with a seamless AI companion experience across devices, your chat histories, interactions, and in-app preferences are collected and securely uploaded to our cloud servers for synchronization.

B. Device and Technical Information

• Device Identifiers: We collect device identifiers, including the Google Advertising ID (GAID) and other unique identifiers, for analytics, advertising attribution, and user retention tracking.
• System & Network Data: We may collect your IP address, time zone, language preferences, and general usage data to support background syncing and push notification services.

C. Android Permissions

To provide core functionalities, the App may request the following system permissions:

• Notifications: To send you alerts, reminders, and messages from your AI companion.
• Camera & Photo Gallery/Album: To allow you to upload images or media within the App's chat interface. We only access the specific media you choose to upload.

3. How We Use Your Information

We use the collected information for the following purposes:

• To provide, maintain, and improve the EchoBuzz service.
• To sync your chat history and AI companion state across your devices via our cloud database.
• To analyze user behavior, retention curves, and subscription conversion funnels.
• To deliver targeted advertisements and measure ad performance.
• To send you technical notices, updates, and security alerts.

4. Artificial Intelligence (AI) Data Processing

EchoBuzz utilizes external third-party Artificial Intelligence (AI) APIs to generate interactive responses. We are committed to your privacy during these interactions:

• No PII Sharing: We do not share your Personally Identifiable Information (PII) with third-party AI service providers.
• No Model Training on User Data: The data transmitted to external AI APIs is anonymized/pseudonymized context specifically required to generate a response, and we explicitly prohibit third-party providers from using this data to train their foundational models.

5. Third-Party Services and SDKs

We integrate selected third-party Software Development Kits (SDKs) to help us analyze app performance and deliver advertisements. These third parties may collect your device identifiers and usage data under their own privacy policies. The primary SDKs we use include:

• Firebase: For backend services, crash reporting, and analytics.
• AppsFlyer: For mobile attribution and marketing analytics.
• AdMob: For serving advertisements within the App.
• PostHog: For product analytics and tracking user events.

6. Data Retention and Deletion

We retain your personal information for as long as your account is active or as needed to provide you with the services. You have the full right to request the deletion of your account and all associated data.

How to Delete Your Data:
You can request the complete deletion of your account and associated personal data at any time by visiting our dedicated data deletion portal: https://d1yl0ss3bqcftk.cloudfront.net/delete-account-g.html

Upon receiving a verified deletion request, we will permanently remove your user data, including cloud-synced chat logs and profile information, from our active databases in accordance with Google Play's Data Safety guidelines.

7. Security of Your Information

We implement robust, industry-standard administrative, technical, and physical security measures to protect your personal information against unauthorized access, destruction, or alteration. However, please be aware that no method of transmission over the internet or electronic storage is 100% secure.

8. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or for other operational, legal, or regulatory reasons. We will notify you of any material changes by updating the "Last Updated" date at the top of this policy and, where required, through in-app notifications.

9. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us at:

• Developer/Company: Kangtao Zonghui (Chongqing) Information Technology Co., Ltd.
• Email: zhoukehua24@gmail.com