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.
why go with tor and not with i2p?
I would like to test a garlicphone varient. I'm not opposed to i2p, I am just alot more familiar with Tor integrations than i2p.
Onionphone uses prepackaged binaries from the guardian project. https://github.com/guardianproject/tor-android.
I would basically need to find the same thing, but for i2p.
tor is actually a bit more secure than i2p from my understanding. mostly it has to do with the routing, which is both the strength and weakness of tor.