The 8 Way Speaker app will speak words and phrases that you can select in the way that's most comfortable for you. So whether you touch the screen, or use a mouse or switch device, you can pick the phrase to be spoken. It's called the "8 Way Speaker" app because there are at least 8 ways that it can be used to speak! The phrases are customizable, so you can add whatever phrases are most useful for you. You can also have an ad-hoc phrase spoken.
If you're making a presentation or doing some other form of public speaking, you can now use the 8 Way Speaker app to speak paragraphs of text using any of touch, touch with small movements, mouse, keyboard or a switch device.