When you're bored, sometimes all you need is a good phone app to keep you occupied, and SoundBow is one such app. SoundBow is an android app that will essentially transform your mobile into a musical instrument. All you need are your fingers and a dash of creativity, and you'll be on your way to making a song that sounds like it's being played on a stringed instrument.
The SoundBow app, available for free download on Google Play, was developed by Agoston Nagy. To create a sound or song, you just have to use your fingers to draw curves on the screen. Each curve is translated into a sound corresponding to a "string", so different curves and their arrangement on the screen will produce a different melody. As the app's website says, "Each time your ever-looping gesture hits a string, a sound is produced."