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.


Probably a bad idea to congest the limited bandwidth of Tor with voice chat.
Creating more mainstream use-cases is how you get people to donate more bandwidth.
The bandwidth is low by design. I’ve excluded files and images to keep it down as well. You could talk 24/7 only use MBs.
If we want Tor to grow we need useful applications useful for everyone. I doubt this will be widely adopted.
I’ve contributed a large amount of bandwidth to the network so why can’t I use some?
Plain speech can be compressed pretty well. I’m not an expert by any means, but I suspect latency would be the bigger issue.
Latency is a huge issue, but it goes away with the PTT model. I tried full duplex on initial prototyping but it was trash.
PTT solves this by simply forcing the listen, digest, then respond. You can expect about 2-3 seconds of delay from when you release the ptt, to when the other side hears it.
Yeah, unless they use specific nodes given by the community, i think it’s a bad idea