Columba is a native Android messaging and voice app built on the Reticulum network stack. It enables infrastructure-free communication via Bluetooth LE, Wi-Fi, LoRa radio (RNode), or TCP, using the LXMF message format and LXST for voice calls. Key features include end-to-end encryption with no accounts or central servers, location sharing with offline map support, multiple identity management with QR code sharing, and Material Design 3 UI. The app is available as an APK via GitHub Releases or Obtainium.
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