TXTcrypt!

TXTcrypt is a general purpose text encryption application for sms/email/notes etc. focused on ease of use and interoperability between mobile and desktop versions. TXTcrypt works with any character set being unicode compliant , the encryption used is as strong as encryption export regulations allow , not military grade but namely RC4 with keys as big as 64bit depending on the length of your password as such providing a decent amount of security.