Etherophone is a free Android app developed by Peter Eastman that lets you turn your phone into a theremin synthesizer. With this app, you can play music just by touching the screen. The app uses the vertical position of your finger to determine the pitch and the horizontal position to determine the volume.

This app allows you to create your own music and experiment with different sounds. Whether you are a professional musician or just someone who loves to create music, Etherophone is an easy-to-use app that will provide you with hours of entertainment.

Overall, Etherophone is a great app for anyone who wants to explore the world of music. With its simple interface and powerful features, this app is perfect for both beginners and experts. Try it out today and start creating your own unique sounds!