I’d say this is a perfect candidate for a web app / PWA.
Government will just hijack the domain as they have with torrents and other things they don't like Am working on a mobile app that requires in person keygen/sharing via Bluetooth, syncs selected data between devices once keys exchanged and new local IP is shared (over something like Signal; discovery is hard/expensive so I am going with a low tech manual option to notify peers how to reconnect) Flood the field with a…
As an unbannable alternative, Make the web app trivially hostable, and use IPFS as a data backend maybe?