Onionphone is a native Android application for anonymous, end-to-end encrypted push-to-talk voice and text communication over the Tor network. No servers, no accounts, no phone numbers — your .onion address is your identity.
Cross-platform compatible with Terminalphone — call between Android and Linux/Termux using the same protocol.
Optionally use your connection as a relay for ephermeral group channels.
Find the release page for version 1.0.2 which supports custom bridges for accessing censored networks.
You do realise that's a contradiction, right?
Unless you're hosting a TOR node (which is outside of the scope here and, in the case of exit nodes, extremely risky), there's nothing here that's relevant to self-hosting.
I don't agree with that. Both sides are acting as a server and a client, connecting via a onion service to either parties rendezvous. And then when you include the fact that you can become a relay, that is clearly self hosting a server in a pure sense.
There are no exit nodes involved in onion services. It all stays within the network.