This Privacy Policy governs the use of the mobile application Stun (hereinafter referred to as the "Application"), created and maintained by NNdroid (hereinafter referred to as the "Developer").

The Application is built as an open-source, high-performance network utility designed to enhance user privacy, secure network traffic, and bypass Deep Packet Inspection (DPI) to ensure free access to the internet. It utilizes standard SSH tunneling complemented by udpgw technology to achieve comprehensive TCP and UDP network proxy functionality.

1. Information Collection and Sharing

The Application operates under a strict zero-collection policy:

• No Personal Information: The Application does not collect, harvest, or request any Personally Identifiable Information (PII), such as names, email addresses, phone numbers, or hardware IDs.
• No User Accounts: There is no registration system, login requirement, or profile creation. You can utilize all core functionalities immediately upon installation without identification.
• No Analytical Tracking: The Application does not contain any third-party analytics SDKs, crash-reporting trackers, or behavioral profiling tools.
• No Advertisements: The Application is completely ad-free and contains no advertising networks that could track your device or cross-app activities.

2. Android VpnService Utilization

To fulfill its core function as a network proxy and DPI circumvention tool, the Application requires the use of the Android VpnService framework.

• Purpose: The VpnService is utilized strictly to establish a local secure network interface, allowing the device to intercept and route outbound TCP and UDP network packets through your self-configured SSH tunnel.
• Data Encryption & Security: All network traffic routed through the VpnService is processed entirely on your local device and encrypted directly using standard Secure Shell (SSH) cryptographic protocols before transmitted to your target server.
• No Interception: The Developer does not intercept, inspect, logs, or store any network traffic, browsing history, DNS queries, or transferred data flowing through the established VPN connection.

3. Local Storage and Data Persistence

All configurations, including SSH server credentials, port settings, and proxy preferences, are stored exclusively within the private, isolated local storage of your Android device allocated to the Application. This data is never synchronized to any cloud server maintained by the Developer. You can wipe this information completely at any time by clearing the Application's cache/data via Android System Settings or by uninstalling the Application.

4. Open Source Transparency

In alignment with our commitment to transparency and cryptographic integrity, the Application is completely open-source. The underlying codebase is publicly auditable, allowing security researchers and the global developer community to verify that the Application behaves exactly as documented and contains no hidden data collection mechanisms, backdoors, or malicious components.

5. Children's Privacy

Since the Application does not collect any personal information whatsoever, it does not knowingly or unknowingly collect any data from children under the age of 13 (or any other age groups). It is completely safe and fully compliant with global child protection regulations.

6. Changes to This Privacy Policy

The Developer may update this Privacy Policy from time to time to reflect modifications to the Application's design or compliance requirements. However, our fundamental core philosophy regarding complete anonymity and zero data collection will never change. Any updates will be made visible by updating the "Last Updated" date at the top of this document.

7. Contact Information

If you have any questions regarding this Privacy Policy, the open-source repository, or the operation of the Application, please feel free to reach out via our official developer channels or open an issue on the open-source code repository.