I know very little about this app and I can’t tell much from this very short description.
Okeanos is an audio-visual application that you can play easily by touching on the screen. A sound and a visual effect will be changed according to the position you touch. A sound theme will be changed occasionally. When the device is connected to the Internet, your play will be sent to the other and you will receive someone’s play. You can play alone without the Internet connection. An alert will appear when the battery is running out.