Android Accessibility Suite is a collection of libraries which allows you to use and manage your Android device eyes-free or with a switch device. When launched you will notice a very friendly UI and you can access different sections of this application. Inside the Accessibility Menu you gain access to control gestures, hardware buttons, navigation, and more. One of its coolest features is the Select to Speak component.
This function requires you to select something on your screen or point your camera at pictures/text and the application will read it for you. The included TalkBack feature provides audible and vibration feedback while you're using the device.