# E Theremin – Electro Theremin

> Vintage electro-theremin synthesizer with analogue sound and slider control. (iPhone/iPad app by Paul Betowski.)

- Source: https://appshunter.io/ios/app/e-theremin-electro-theremin/id591471950 (this page in markdown: same URL + `.md`)
- Developer: [Paul Betowski](https://appshunter.io/developer/538476580)
- Category: Music, Music, Entertainment
- Price: $2.99
- Rating: 2.80/5 from 4 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.2 · 11 MB
- Languages: American English
- Released: 2013-01-15
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/e-theremin-electro-theremin/id591471950/reviews.md

## What is E Theremin?

Vintage Electro–Theremin, Onassis Martino style synth.

This app is inspired by early classic slider controlled synthesisers such as the Ondes-Martenot, Trautonium and Tannerin/electro-theremin.

The E Theremin has two oscillators that generate a rich fat analogue tone, with a choice of 5 waveforms (saw, square, triangle, sine and theremin wave) octave shift. The E Theremin can achieve portamento, vibrato and quarter-tones with precise control.

– Ideal for professionals looking for an alternative to the keyboard controlled synth. 
– Great for anyone interested in synthesizers, particularly early analogue.

In 1928 Maurice Martenot created one of the first electronic musical instruments, entitled; the Ondes-Martenot, the prerunner to the theremin, similar in sound but with a very different type of user interaction, an inspiring slider on a cord was used. Later in the 1950s Paul Tanner invented the Tannerin a.k.a. Electro Theremin. The Tannerin used the same slider controls as the Ondes-Martenot to control pitch. The Tannerin went on to play a large role in records such as The Beach Boys “Good Vibrations”. 

Summarized Features
– Two oscillators
– 5 waveforms
– New classic style theremin waveform  
– 4 octave scrolling keyboard
– 4 octave slide control 
– Reverb with 11 presets
– Delay (can preform endless loops)
– Fat analogue sound
– Retina GUI

## Key features

- Two oscillators
- 5 waveforms
- Octave shift
- Portamento, vibrato, quarter-tones
- Reverb with 11 presets
- Delay with endless loops

## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/e-theremin-electro-theremin/id591471950/reviews.md

### 4/5 — Could use an improvement.

*2020-11-10, version 1.1*

I love this electro-theremin app, as I have always wanted to learn how to play the theremin, since I heard “Good Vibrations” when I was 7/8 years old. I wish the theremin could make the correct sound that is heard on “Good Vibrations”. That would be a great improvement update.

### 5/5 — Great app

*2020-02-11, version 1.1*

Ignore the previous reviews. They didn’t know what they were getting. This is a fun theramin with old school analog oscillator controls.

### 1/5 — No Sound

*2019-12-04, version 1.1*

No sound on IPad Pro 13.2.3

### 1/5 — No sound!

*2019-06-24, version 1.1*

No sound on iPhone 8 
iOS 12.3.1

### 2/5 — Would be cool if the gate button was also volume control.

*2015-09-23, version 1.0*

Otherwise this is just a novelty app. Has potential to actually be used for making music but the volume can not be adjust during play.

### 2/5 — too basic

*2013-09-11, version 1.0*

It's too hard to use. You have to hold your finger on the gate button the whole time. You can only cycle through wave patterns one by one in order with a single button - you can't go back or skip to what you want like you can with a knob. And I don't see how it is much like a theremin - no similarities in the controls or sounds.

### 4/5 — I See Great Potential

*2013-05-24, version 1.0*

Please..... Audiobus support now!

### 3/5 — Sounds Could Be Better

*2013-05-22, version 1.0*

The UI and controls are nice, but the sounds aren't very reminiscent of either type of Theremin. Would love to see something with a little more than just two oscillators, and something that has more of the Theremin sound!

### 5/5 — Bravo! Gorgeous!

*2013-01-18, version 1.0*

Historically accurate with a great sound but the gate... Can't we just use one finger rather than two?

### 5/5 — Simple and just right

*2013-01-17, version 1.0*

Thank you for this! Audiobus support would be great!! :)

## Frequently asked questions about E Theremin

### What is E Theremin?

E Theremin is a vintage electro-theremin synthesizer app inspired by classic slider-controlled instruments like the Ondes-Martenot and Tannerin. It offers a fat analogue tone with two oscillators and various waveforms.

### What kind of sounds can E Theremin create?

E Theremin can achieve a rich analogue tone with five waveforms (saw, square, triangle, sine, and theremin wave). It also allows for precise control of portamento, vibrato, and quarter-tones.

### Who would benefit from using E Theremin?

This app is ideal for professionals seeking an alternative to keyboard-controlled synths and for anyone interested in early analogue synthesizers. It's particularly relevant for those exploring sounds similar to those found in classic recordings.

### What are the sound effects available in E Theremin?

E Theremin includes a reverb effect with 11 presets and a delay effect that can perform endless loops, adding depth and texture to the generated sounds.

### What is the price of E Theremin?

E Theremin is a paid application, priced at $2.99. This one-time purchase grants access to all its features.

### On which devices can I use E Theremin?

E Theremin is supported on iPhone and iPod devices. It is designed to provide a vintage synth experience on these platforms.

### How often is E Theremin updated?

The latest version of E Theremin is 1.1, which was last updated on October 18, 2015. Users can expect a stable experience based on its last update.

### What is the age rating for E Theremin?

E Theremin has an age rating of 4+, making it suitable for a wide range of users interested in music creation.

## Version history (last 2 releases)

### 1.1 — 2015-10-18

This app has been updated by Apple to display the Apple Watch app icon.

New GUI
Keyboard
Improved slider control
New sound engine
Delay 
Reverb

### 1.0 — 2013-01-15

No release notes.

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## More apps by Paul Betowski

- [DUBSTEP / Loops / Keyboard / Drums](https://appshunter.io/ios/app/dubstep-loops-keyboard-drums/id557267838)
- [SynthDrum Pads](https://appshunter.io/ios/app/synthdrum-pads/id657577819)
- [DNB / Loops / Synth](https://appshunter.io/ios/app/dnb-loops-synth/id670737604)
- [E–Theremin MKII](https://appshunter.io/ios/app/etheremin-mkii/id905407070)
- [WubSynth](https://appshunter.io/ios/app/wubsynth/id1074423582)

All apps by Paul Betowski: https://appshunter.io/developer/538476580

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*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 2026-06-10.*