Optical Theremin is described as 'Creative, camera-powered musical instrument that lets you play eerie tones just by moving your hands. Inspired by the classic theremin, this app detects your movements using your phone's front-facing camera and translates them into real-time audio' and is a music production app in the audio & music category. There are 2 alternatives to Optical Theremin for a variety of platforms, including Android, iPhone, Android Tablet, iPad and AudioBus apps. The best Optical Theremin alternative is TouchOSC.
Modular OSC and MIDI control surface for iPhone / iPod Touch / iPad / Android
Remote control and receive feedback from any software or hardware that implements the OSC or MIDI protocols.
TouchOSC is the most popular Android, iPhone, iPad & Android Tablet alternative to Optical Theremin.
TouchOSC is the most popular commercial alternative to Optical Theremin.
The Reactable is an electronic music instrument available as an App and as a tangible multitouch unit for live performance and creation of music.
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