CypherM is a Mac OS X application that can be used to encrypt clear text, using classical encryption algorithms as the "Caesar Cipher" or "Vigenere Encryption".
Classical encryption is perfect for encoding our communications through instant messaging systems or social networks like Facebook or Twitter. The encoded text has exactly the same number of characters that the clear text, making it perfect for encrypting our messages on Twitter.
CypherM can encrypt your messages on Twitter, Facebook, Email, Evernote or personal notes. Don't let anyone read your private messages.
Privacy of communication is increasingly at risk. Protect your communications using this or other software, but "don't send your letters in opened envelopes".
NOTE: To buy CypherM via the App Store an Apple account is required.