ParaChat - IRL like chatting

Paranoid chat. The messenger for truly private communication: the ability to encrypt any message with any password! Passwords for messages are not transmitted or saved in any way, i.e. to read the messages, the interlocutor must find out the password from you personally.
Additional features:
* PIN code for the application with protection from prying
* Fake password deleting all messages in a chat
The list will be supplemented as the application develops.