If what you are after in messaging apps is fun then, Quickie is a good application for you. But if what you are after is a messaging app that can be used for both formal and informal purposes then my advice to you is that you consider another application. As for its developers they should sit down and come up with something unique for the application if they want it to have a chance against the already established messaging applications.
Quickie for Smartphone
Quickie for Windows Phone
Quickie for Blackberry
