Two Versions: WAN & LAN

WAN

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XaephyrComms Secure P2P Connect

Works over the internet, via the Nostr network

Needs an internet connection. Gives you a persistent identity and encrypted messaging that isn't tied to being on any particular local network — use it from anywhere.

LAN

XaephyrComms Secure Off-Grid

Works over local Wi-Fi and/or LoRa radio — no internet at all

Needs zero internet access. Built for when you don't have connectivity: local Wi-Fi mesh, and/or long-range LoRa radio for off-grid situations entirely.

File & image sharing (Wi-Fi)
Push-to-talk voice, encrypted on Private channel
LoRa radio mesh — kilometers of range, no infrastructure
Position sharing for LoRa peers

In brief: WAN (this app) is internet-based, persistent-identity, text messaging. LAN is the fuller-featured, no-internet-required sibling — it's the one with file sharing, voice, and radio. Neither is a lesser version of the other; they're built for opposite situations.