I haven't seen anything that beats IRCCloud in the ease of use and UI departments, especially their mobile apps. That said, the full service is $5/month and so

I haven't seen anything that beats IRCCloud in the ease of use and UI departments, especially their mobile apps. That said, the full service is $5/month and so not for everybody. Also, you mention security and I'm not sure whether you'd consider a cloud service permissible in that sense or not.