Slewpi is similar to MIT’s Singer Fingers but instead of samples it uses an synth engine. You draw with sound. Different colors, thicknesses and locations on the iPhone screen represent different sounds. This is a fun music App for kids and adults alike. There’s no reason you couldn’t find use for this in your music productions.
“Slewpi is a new type of app that lets you create music and synthesized sound and animation by painting on the screen with your fingers. Slewpi is super easy to use, just paint with your fingers and choose different colors and brushes to change the strokes and sounds. Slewpi records what you do and plays it back in a loop. Choose different brushes to change the visual style as well as the sound of your strokes in real-time. The different brushes correspond to different synthesizer waveform and vibrato settings allowing you to create new and diverse audio/visual compositions.” – slewpi.com
For more info: slewpi.com