# Theremin (Motion Sensors and Touch Screen) > Mobile Theremin instrument using motion sensors and touch for audio frequency control. (iPhone/iPad app by zakk hoyt.) - Source: https://appshunter.io/ios/app/theremin-motion-sensors-and-touch-screen/id570320684 (this page in markdown: same URL + `.md`) - Developer: [zakk hoyt](https://appshunter.io/developer/570320687) - Category: Music, Entertainment - Price: Free with in-app purchases - Rating: 3.00/5 from 9 App Store ratings · 27 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 12 MB - Languages: American English - Released: 2012-10-24 - Data updated: 2026-08-28 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/theremin-motion-sensors-and-touch-screen/id570320684/reviews.md ## What is Theremin (Motion Sensors and Touch Screen)? This app uses the device's motion sensors and touchscreen to modify the frequency of the output audio. Inputs include touchscreen, accelerometers, gyroscopes, and the magnetometers. For each individual axis you can adjust max/min frequency, sensitivity, waveform, and effects. ## Key features - Motion sensor control - Touchscreen interface - Adjustable frequency range - Selectable waveforms - Audio effects - Axis-specific customization ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Scales for Autotune | $0.99 | one-time | | Graph the motion sensors | $0.99 | one-time | | Camera Sensor | $0.99 | one-time | ## Recent user reviews (10 of 27) All indexed reviews: https://appshunter.io/ios/app/theremin-motion-sensors-and-touch-screen/id570320684/reviews.md ### 3/5 — Theremin *2024-10-25, version 3.31* The app is very well, and use the device is motion sensor is like touch, 0 m, and magnetometer magnet detector, After Pinterest the store, The camera is not working correctly, but it’s OK I rate this five stars ### 4/5 — Hey *2023-11-25, version 3.31* Every time I go to turn on motion controls, it crashes. Other than that, it’s good. ### 4/5 — Good app *2021-02-27, version 3.31* It’s good but one thing it helps quite a lot ads so maybe if you fix that will be a five star app ### 1/5 — Camera Sensor Issues *2019-05-24, version 3.31* After the purchase of the Camera Sensor from the store and pressing the “Toggle” button, the app always crashes rendering the user to deem the purchase useless. Hoping you would resolve this matter or return the payment. Thank you very much! ### 5/5 — Great! *2018-09-01, version 3.31* Great app to play around it, plus my 3 year old and 1 year old found it very easy and very fun to use. ### 1/5 — Doesn't work for me *2017-04-17, version 3.31* Nice visuals but unfortunately no sound, despite a lot of fiddling. ### 2/5 — Sounds absolutely nothing like a theremin *2017-04-11, version 3.31* It works, crash free, but has as much in common with its namesake as a car alarm. ### 1/5 — Need more instructions *2016-10-25, version 3.31* I can't figure out how to use this. I need some ghostly sounds, like the ones that come from a theremin - but this only makes screechy computer sounds that are actually painful. ### 1/5 — Really disappointed *2016-03-06, version 3.31* I could barely make sense of what the various sensor settings were trying to do, and I wanted them to take over various aspects (eg pitch, volume) of the sound generation, not make an additional one. ### 5/5 — Fantastic. *2015-03-10, version 3.31* This app is simply great and i can't wait to let my 20 month old son get his hands on it as well. ## Frequently asked questions about Theremin (Motion Sensors and Touch Screen) ### What does the Theremin app do? This app transforms your mobile device into a virtual theremin. It utilizes the device's motion sensors (accelerometer, gyroscope, magnetometer) and touchscreen to manipulate audio frequency, allowing for expressive sound creation. ### How can I control the sound? You can control the sound by interacting with the touchscreen and moving your device. The app maps these inputs to modify audio frequency, waveform, and apply various effects, with individual axis control for fine-tuning. ### Is this app free to use? The base application is free to download and use. However, it offers in-app purchases, suggesting that some features or content may require an additional purchase to unlock. ### What devices is this app compatible with? The app is designed to work with mobile devices that have motion sensors, including accelerometers, gyroscopes, and magnetometers, as well as a touchscreen interface. ## Version history (last 5 releases) ### 3.31 — 2014-10-10 This app has been updated by Apple to display the Apple Watch app icon. Updated the font for a modern look. ### 3.3 — 2014-09-25 Added a store section. Available purchased include: * Scales/Keys for Auto-Tuning - Chromatic, A Major, C Minor, etc... * Camera Sensor - Using the center pixel of a live camera feed, each pixel color drives a synthesizer channel (RGB). * Graph Output - Monitor the motion sensor output with a live graph. Added a more accurate slider control for in several settings. Updated informative labels. ### 2.0 — 2014-04-05 Reworked the user interface for configuring the synthesizers and other settings. Updates to the synthesizer code as well. Added a quick connect for AirPlay. ### 1.2.2 — 2013-01-18 Since an iOS device cannot sense capacitance, the motion sensors and touch screen are used to alter the audio output. You can assign audio channels to the axes of 4 inputs: 1.) Touchscreen (x,y) 2.) Accelerometers (x,y,z) 3.) Gyrosocopes (x,y,z) 4.) Magnetometers (x,y,z) That's 11 channels total (each axis gets one). A channel has 1.) Min, max, and current frequencies 2.) A waveform (sin, square, triangle, sawtoot) 3.) An effect (such as snapping to closest half note). 4.) A sensitivity rating (how sensitive is it going to be when you apply force to an accelerometer, or torque to a gyro, etc...) 5.) Amplitude. To mute a channel, set its amplitude to zero. ### 0.2 — 2012-11-02 New UI graphics. Removed non-functional controls. ## Apps similar to Theremin (Motion Sensors and Touch Screen) | App | Rating | Price | Category | | --- | --- | --- | --- | | [Mynth - Polyphonic Synthesizer](https://appshunter.io/ios/app/mynth-polyphonic-synthesizer/id1527862717) | 4.8 (44) | Free | Music | | [Seaquence](https://appshunter.io/ios/app/seaquence/id1106270489) | 4.6 (74) | Free | Music | | [Pegboard - Wavetable Synth](https://appshunter.io/ios/app/pegboard-wavetable-synth/id1566248837) | 4.5 (8) | Free | Music | | [Jam Synth](https://appshunter.io/ios/app/jam-synth/id732618765) | 5.0 (28) | Free | Music | | [Wave Organ](https://appshunter.io/ios/app/wave-organ/id6748617734) | 5.0 (1) | Free | Music | | [Tabletop](https://appshunter.io/ios/app/tabletop/id436080882) | 3.3 (85) | Free | Music | ## More apps by zakk hoyt - [ColorBlind Color Finder](https://appshunter.io/ios/app/colorblind-color-finder/id573736442) - [Stop Drinking Today](https://appshunter.io/ios/app/stop-drinking-today/id1065436257) - [ThrashCam](https://appshunter.io/ios/app/thrashcam/id1070973629) - [Kuiper Shapes](https://appshunter.io/ios/app/kuiper-shapes/id1073379627) - [Exoplanets vs Earth](https://appshunter.io/ios/app/exoplanets-vs-earth/id1139092964) All apps by zakk hoyt: https://appshunter.io/developer/570320687 ## Related topics [theremin touch](https://appshunter.io/ios/topics/theremin-touch) · [theremin plus](https://appshunter.io/ios/topics/theremin-plus) · [theremin](https://appshunter.io/ios/topics/theremin) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*