Paranoia Text Encryption Lite (free version)!

Paranoia Text Encryption is the universal text encryption application for iOS (iPhone/iPad/iPod) by Paranoia Works. Just copy and paste to and from your favorite applications or save to a file for later use. A free cross-platform desktop version (Mac OS X, Windows, Linux, ) and an online (web-based) version (AES, client-side JavaScript) is available on the apps homepage (download section).