ADAMANT Messenger. Price of cryptocurrency: $ 0.0115608

The ADAMANT is an open-source messenger. The messages are signed by the SHA-256 and Ed2519 EdDSA. There are apps available on the web, app store, and other places. It is impossible to censor apps that do not have access to the contact list orgeotags. In-chat with full control of private keys, 2FA solution, and an anonymous exchange are features.