I have no access to change sounds. The bottom shows up for half a second and then goes blank. Where do I change sounds? Pretty cool how it works though. It’s awesome. Just love to have other sounds.

8 years ago, KDKnopp

Awesome simulation!

The GUI is top notch. Way above other apps that try to mimic the theremin. Very customizable and well worth the small cost.

10 years ago, ††The One And Only Warren Cain††

Incredibly cool

Functions perfectly! The light sensor functionality is virtually flawless and the sound presets sound beautiful! It's really cool controlling the sound just by moving your hand closer or further away from the iPhone. You can also manually adjust vibrato and delay for added customization. In addition, they give you around 70 unique scales to choose from, and an option to just use the whole keyboard! It's one of my favorite apps!

10 years ago, Geehoober

Very, very cool.

Not only is it sensitive to your hand motions, but it calibrates well for light conditions. Also, lots of voices and harmonic settings. Very nicely done.

9 years ago, Val79

Issue with calibration

I checked, and my phone allows this app to use the camera, but it could never calibrate.

10 years ago, redindian75

Cool gestures

It's a fun little app to experiment with camera gestures like air vox

9 years ago, [email protected]

Fun Fun Fun

Too cool try it !

Description

Play with light – Theremin I/O turns your iPhone into a touchless music instrument. It uses your camera and flash to measure the distance to your hand, this signal is then processed by a synthesizer to generate a tone. Features: • Old-school synthesizer • Constrain input to scales (harmony quantization) • 8 sound presets with effect controls • 50+ scale presets • Use as a MIDI controller (requires in-app purchase) • Learn fast with the tutorial overlay For more information visit http://theremin.io