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.
See others TXTcrypt apps for most mobile platforms (iOS, Android, webOS, now for WP7 and WP8) at http://vladalexa.com/apps/ios/txtcrypt/
Protect your privacy with TXTcrypt, nobody is safe from private data exposed to any look or any provider.
With TXTcrypt, your private texts & mails will stay private and only readable by trusted people.