There are a number of ways to enlarge the text from the Speech Display Bar. Changing the text size and the number of lines in the window will keep the text a consistent size. There are also options for enlarging the text when turning the devices orientation or choosing a Tap Action.
For version 1.2.0, to get to the settings for TouchChat, choose Menu-> Settings. From there, you can adjust the Speech Display bar.
For version 1.1.0, follow the steps below:
Find “Action” in the Tilt Category
Go back to Touch Chat and try it out