Metadata-free chat exists already on the desktop with Ricochet (https://ricochet.im https://ricochet.im) and it will soon exist on mobile with Briar (https://br

Metadata-free chat exists already on the desktop with Ricochet (https://ricochet.im https://ricochet.im) and it will soon exist on mobile with Briar (https://briarproject.org https://briarproject.org). Both work through Tor hidden services - Briar also allows to exchange messages over Bluetooth and direct wifi.