It was written as an aid to communication with deaf people. I have shared it here just in case other people find it useful.
The size of the font can be configured.
It continually listens and displays text when a sentence has finished. As with all apps that use the Google speech recognition service, it is better to speak slowly and clearly.
V1.0 - First release
V1.1 - Added reverse scroll feature, improved scrolling
V1.2 - Fixed intermittent crash, added clear text feature