Theremin I/O is a music app developed by FFFF Agents AB. Available for $2.99, it was updated to v1.30 on September 28, 2017, and currently holds a 4 out of 5 rating based on 5 reviews. Before downloading, make sure your device has at least 18 MB of free space and runs Android 7+ or iOS 8.0+.
Touchless music instrument
Video: Theremin I/O Overview
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.
Theremin I/O may be playable on Windows and macOS using Android emulators such as BlueStacks. Follow our BlueStacks installation guide to get started. Looking for Theremin I/O APK? Visit our forums for help finding authorized downloads, installing APK files, and troubleshooting installation issues.
User Reviews and Ratings
★★★★★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!
★★★★☆Sounds good but...
The sound is pretty authentic, but a real theremin isn't zippered.
★★★★★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.
★★★★★Cool gestures
It's a fun little app to experiment with camera gestures like air vox
