package icon

T2DECODE

Offline interactive learning platform for IT, Cybersecurity, and Networking.
Note: The application interface is currently in French only.

T2DECODE is a local-first learning platform designed for IT enthusiasts, cybersecurity students, and network administrators.


Features:
- Privacy-focused: Fully functional offline, no telemetry, no tracking, and includes a global offline mode.
- Interactive Labs: Network, System, Cloud, and Cryptography simulators.
- Local AI Assistant: Integrate with local Ollama models (Phi-3, Llama 3) for an air-gapped AI tutor.
- P2P Communication: GhostLink allows local LAN encrypted communication without servers.
- Offline Tools: Built-in utilities (Subnet calculators, Hash generators, CRON helpers, and more).
- Network Diagnostics: Optional real network tools (ping, DNS lookup, TCP connect diagnostics).
- Optional Sync: Download additional course modules directly from the official GitHub repository.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.0.3 (353) suggested Added on Aug 17, 2026

    x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • org.t2decode.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 24 MiB PGP Signature | Build Log

  • Version 1.0.3 (352) - Added on Aug 17, 2026

    arm64-v8a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • org.t2decode.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 22 MiB PGP Signature | Build Log

  • Version 1.0.3 (351) - Added on Aug 17, 2026

    armeabi-v7a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • org.t2decode.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 20 MiB PGP Signature | Build Log

Find Apps