What is an SMS application for? Of course, it is for SMS. You can use such application when you feel bored using the ordinary one. Even though the feature is complete, but sometimes you need refreshing by looking at different display for your SMS. You can consider this app, AwSMS in order to get more sophisticated and fresh look thanks to the beauty of Material Design.
Except the display, there is no special feature on this app. It is just like the ordinary ones. But you have various options for display setting from the colour of the theme up to the status bar and navigation bar setting. The animation is also stunning. But if you prefer more responsive, you can shut the animation down.