Duetto App Android Free Download

Duetto App Android Free Download

Duetto

Paolo Benvenuto · Voice & Video Chat

• Android
• Free
• Open source · GPL-3.0-or-later

Download APKv0.9.18 · 28.2 MBRequest update Source code

0.9.18Version

Sep 28, 2026Updated

28.2 MBSize

Android 7.0+Requires

2Downloads

Released

Sep 9, 2026

License

GPL-3.0-or-later

Package

com.duetto

SHA-256

12f196806968a93ff970dc4a1d70feaf9db6390d0a0b6f64cc0a019be687a5ed

Screenshots

What's new v0.9.18

• While the phone rings the channel stays open: it goes quiet when you answer.
• Notifications name the channel and say the times.
• You choose the other person's name.
• "Leave and become unavailable" is at the top, apart, and asks for confirmation.
• The buttons' sounds have a volume setting; coming in and going out are arpeggios.
• Better colours in the volume strip.

About Duetto

Duetto is a tiny "Discord" made to measure for two people only. It is not an app for calling: it is a permanent channel. Open the app and you are in; if the other person is there too you connect by yourselves, and otherwise you stay reachable and are told the moment they arrive.

Audio and video travel end-to-end encrypted straight between the two phones. The server – yours, or one somebody let you in to – is only there to let you find each other, and cannot read anything. No account, no phone number, no service of anybody's.

• One tap and you are in the channel, and you stay: the app survives the night, the pocket, the change of network.
• Video when you want it, with the quality chosen for both phones.
• The other person can call you back with a sound that gets through even with the ringer down.
• Pairing with an eight-digit code or a QR code held up to the other phone; invitations for whoever is to open connections of their own on your server.
• Silent during a phone call, back when it ends.
• Free software, GPL-3, and a server you run yourself: a small Node.js process and coturn.

You need Android 7 or later, and a server: the README says how to put one up in a quarter of an hour.

APK file hosted on AABforAndroid (Sep 29, 2026, SHA-256 verified). Free and open-source software (GPL-3.0-or-later) · Source code.