
Beam Rider (light theremin)
The universe is singing bruh
2 ratings
Free
About
Beam Rider is a theremin you play with light! Truly.
Lay your phone flat under a lamp, camera up. Your right hand floats over the camera. Move closer and the note rises, pull away and it falls. Your left hand rides the volume and effects on screen. No touching the instrument, just air, light and shadow. (screen mode available too)
PLAY IT YOUR WAY • Easy mode keeps every note in key, so nothing sounds wrong. • Step snaps to notes, Soft pulls gently, Free glides like a classic theremin. • Grab the pitch pad any time to steer by touch.
SOUNDS AND EFFECTS • Classic Theremin: pure, eerie, singing. • Reverb, Delay and Mod, each with Chill, Feel and Kill modes (some, more, and tones) • Tempo control with sync, so echoes and wobble lock to the beat. Lots and Lots More. 14+ (updates already scheduled from more sounds, feel free to request)
JAM WITH THE BAND • Play along to the GROUCHO video "A Better World". Beam Rider switches to the song's key. • "Trip" mode turns the screen into a light show that pulses with your notes and the music. UPLOAD your own music too!
BEAM RIDER PRO (one-time unlock, no subscription) • Every key and scales, plus your own custom note sets • 13 extra sounds: Buzzy, Arcade, Moon Drone, Ghost Choir, Singing Saw, Glass Bowl, Breath Flute, Space Radio and Wah Eel • Feel and Kill effect levels, tempo sync, Glide • Your own songs and pictures, every skin colour, range and sensitivity controls
PRIVATE BY DESIGN The camera only measures light. Nothing is recorded, saved or sent. No ads, no tracking, no account. Seriously. I hate the shi-, just toss me a 5'er and this is yours till ya die.
Made by GROUCHO (band) / Composer Dustin Edward Howard, with thanks to Exiting Plato's Cave Podcast.
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What's New in Beam Rider (light theremin)
1.0
November 5, 2026


