This application simply displays the words that it hears on the screen in large letters. 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.
Dragon's Fire is the creator of Deaf Helper No Ads which can be found in the Communication category. The most recent update was on Jan 22, 2019 and this application was downloaded and set up by over 100 users. On Google Play, the app has been rated 4.5 by its users.
You can get the installation package of Deaf Helper No Ads 1.61 free of charge and take a look at users' reviews on Droid Informer. The download of the app doesn't contain viruses or any kind of malware.