Developers have created apps for pretty much everything, and now, there’s the Solar Modulator, which translates shifts in light intensity into MIDI messages using the camera of an Apple device. According to Synthtopia, “Solar Modulator reacts to any light change. It can be something as simple as changing a sound by moving one’s hand towards the camera (blocking light), but it also supports more complex interactions, using a remote control’s infrared pulses and more.” The app works as a standalone MIDI device and can be synced with Logic Pro or Ableton Live. It’s available to download and test for free, and the full version will only run you $3.99. Watch the teaser video here.