Messages only you and them can read.
Private by default, not as a setting you have to hunt for. Your keys are made on your device and stay there. Everything is locked before it leaves, so the server only ever holds scrambled text it cannot read.
You ↔ Aria
end-to-end encrypted
you: …aria: …
Send a message. It gets locked on this device before it would ever reach a server. Hit peek to see what the server actually stores. Spoiler: nothing you can read.
speaking as
Real keys, real encryption, two identities, all in your browser. Send a line, then hit peek to watch it turn to noise the moment it would leave the device.
Your keys, your device
A keypair is made right here in your browser. The private half never gets sent anywhere, not even to me.
The server cannot read you
Messages are locked before they leave your device. If the database ever leaked, all anyone would get is gibberish.
Check it yourself
Read the code. Compare key fingerprints with the person you are talking to. Trust the math, not me.