Source: http://lifehacker.com/cryptocat-creates-private-encrypted-chatrooms-on-the-i-1536166850
iPhone: Cryptocat is one of the easiest to use encrypted chat clients
Cryptocat for the iPhone works pretty much the same as the desktop counterparts. The process to use Cryptocat is pretty simple: create a private chatroom with a unique name (use something strange and unique if you don't want random people dropping in), share that name with your friend over another form of communication like text message, then they'll create a one-time use username and enter the chat room. From there, you can chat away about whatever you want, and Cryptocat won't save any of it after you exit the app. All the text sent in Cryptocat is encrypted and you can peek at how it works on the Cryptocat blog. Cryptocat works between devices too, so you can chat with people on desktop, in their browser, or in the iPhone app. I had a few random crashes in the app selecting information about usernames, but overall the experience is similar to the desktop versions.
Cryptocat (Free) | iTunes App Store
---
drag2share - drag and drop RSS news items on your email contacts to share (click SEE DEMO)