Hi, Just joined up, excellent project thus far!
Quick intro, Amateur Radio Operator from the UK, also operate as a RAYNET member (disaster communications group in UK)
We currently using some APRS devices, but this project would enhance capabilities.
Anyway on to the suggestion.
How about adding Wifi Hotspot and a WebServer serving a simple GUI via local wifi hotspot from the ESP32.
This would then enable devices that do not have the app to communicate in a simple fashion when a situation arises that means mobile internet services are unavailable and the devices have not previously installed the APP. (also would enable IOS devices before the app is developed)
This could then provide an immediate emergency, infrastructure-independent, meshed network available to anyone with a wifi device. Simply connect to the WIFI being broadcast, open your browser, navigate to http:\192.168.10.1 and have a simple chat app that means you can send messages to all other connected devices.
Just another use case idea, I know this not the primary goal of the app. But would open a lot more uses. I guess this also falls into the “Co-op module” as discussed on other threads(SOS button). I am also assuming this could use the API to interact with the core code.
Anyway, added as a suggestion, my limited development skills may be able to assist to get a prototype going, but my coding is normally badly written at best…