EnText

Você pode criptografar (descriptografar) o texto. ele pode ser compartilhado com outras pessoas.

Do you anxious that your secret conversation is saved on the chat server?

Do you want to talk secret with a friend?

You can encrypt(decrypt) the text. it can be shared with other people.

In particular, it can be easily used to overlap on top of the chat app.

It is sufficient to know only the same password to each other.