Speak Up can be used to encourage children to vocalise and make sounds.
If the app fills the window, maximise the window to full screen and the app will run as full screen.
Press ESC key or click/tap the X button to close the app.
How to Use
SpeakUp will request permission to use the device microphone on the first run. Then choose from the 8 effects you would like to use. Make a sound and you will see the shapes change and grow. You can change the sensitivity and span/range using the in app Settings levels.