If the app is not speaking the words, please make sure that your device has got the Google Text-To-Speech engine installed (also known as Google TTS). If it is not installed, please install it from here

The app uses the default Google Voice on you device. You can change this in “Settings” -> “Accessibility” -> “Text-to-Speech output”


The app uses the “Spoken Content” voice on your device. This can be changed in “Settings” -> “Accessibility” -> “Spoken Content”