For all samsung devices owners you can download Encdroid my new App from samsung apps for FREE !!
Encdroid is the best app to encrypt your MESSAGES and send it via any chat application
You can search it on samsung apps application or download it from the links below >>>> Enjoy it
Galaxy tab 10.1 & 7.7 & Galaxy tab 2 10.1 :
Galaxy tab 7.0 pluse & Galaxy tab 2 7.0 :
Galaxy Note :