# iVoxel

> Vocoder and synthesizer app for real-time voice manipulation and singing. (iPhone/iPad app by Harry Gohs.)

- Source: https://appshunter.io/ios/app/ivoxel/id382428641 (this page in markdown: same URL + `.md`)
- Developer: [Harry Gohs](https://appshunter.io/developer/382428644)
- Category: Music
- Price: $6.99
- Rating: 3.30/5 from 17 App Store ratings · 204 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 46 MB
- Languages: American English
- Released: 2010-08-03
- Data updated: 2026-08-30
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/ivoxel/id382428641/reviews.md

## What is iVoxel?

iVoxel is not only an amazingly sounding vocoder - the unique concept of iVoxel turns this vocoder into a singing machine. iVoxel is a combination of a voice optimized synthesizer and a vocoder. The vocoder part is based on the Matrix vocoder from VirSyn used by many famous artists - one of them the well known german group Kraftwerk. The channel filters used by iVoxel are based on the Sennheiser Vocoder VSM201 resulting in a rich and fat analogue sound characteristic.

The pitch follower and automatic tuning let you sing correct to a selectable scale.

You can use iVoxel in many different ways:

As a realtime vocoder talking into the microphone while playing tunes on the keyboard. The sound character of your voice can be changed in many different aspects like pitch, gender or breath noise. Use it to sing over your favorite iTunes song !

Record the analyzed spectrum of phrases and words from your own voice. Then use this voxel to play with your own voice on the keyboard or with the build in sequencer. Nearly 300 hundred prerecorded voxels are already included.

iVoxel is Audiobus compatible and can be used in the Input, Filter and Output slots in the Audiobus signal chain. The carrier signal and the vocal signal can now be fed by any Audiobus compatible Apps.

The output of your creations can be recorded to an audio file which you
can use with other Apps and programs for further processing.

Features:

• Realtime analysis/resynthesis of your voice
• 20+2 Channel vocoder
• Pitch Follower and automatic tuning correction to selectable scale
• Realtime pitch to MIDI Note converter
• Voice spectrum recorder (voxels)
• Nearly 300 prerecorded voxels included
• Play your vocoded voice live on keyboard. Drag for slides and vibrato. 
• Polyphonic sequencer for notes & lyrics
• Voice optimized polyphonic synthesizer with up to 64 analog waves
• Time warping of voxels
• Gender changer
• Breath noise
• Pitch vibrato with delay
• Hi-end Reverb and Chorus/Delay effects
• Export/Import of projects and voxels
• Export of audio recordings
• Upload recordings to SoundCloud
• Copy audio recordings to Clipboard
• Virtual MIDI and Background audio
• flexible MIDI control for Gender and Vibrato
• compatible to Korg/WIST standard
• CoreMIDI
• Audiobus 2 support (Input/Filter/Output) with state saving (requires iOS 7 or newer)

## Key features

- Real-time voice analysis and resynthesis
- 20+2 Channel vocoder
- Pitch follower and automatic tuning
- Voice spectrum recorder (voxels)
- Included prerecorded voxels
- Live keyboard playback of vocoded voice
- Polyphonic synthesizer with analog waves

## What do users think of iVoxel?

Overall sentiment: mixed

**Pros**

- 🎵 Excellent sound quality and vocoder capabilities
- 💡 Innovative vocal sound design tool with unique spectral shaping
- 🎹 Versatile instrument for creating robot/Kraftwerk-style vocals
- 👍 Intuitive once users understand the interface
- 🎧 Works well with built-in microphone for live vocoding
- 💰 Affordable price point for professional-quality vocoder
- 🔧 Highly customizable with extensive editing options
- 📱 Capable of multitasking with other audio apps

**Cons**

- 🐛 Frequent crashes and stability issues across iOS versions
- ❌ Poor documentation and unclear user interface
- 🔇 Volume levels inconsistent - too quiet or too loud
- ⚠️ Unreliable audio input/output routing
- 🚫 Limited microphone compatibility and connection issues
- 📉 Lack of developer support and communication
- 🔄 Infrequent updates and slow bug fixes
- 💔 Broken features in newer iOS versions
- 🎛️ Confusing interface design with non-intuitive controls
- ⚡ Performance issues and latency problems

**Commonly reported bugs**

- App crashes on launch or during use
- Hangs when changing presets or settings
- Random background noise and clicking sounds
- Microphone input not recognized or working intermittently
- No sound output in standalone or Audiobus mode
- Touch controls unresponsive in certain screen areas
- Import/export functionality broken
- Sequencer not playing sounds or producing audio
- Recording functionality causes crashes
- Compatibility issues with iOS 18, iOS 17, and older versions
- Audiobus carrier wave option not appearing
- MIDI stuck notes and keyboard responsiveness issues
- Display rendering issues on certain devices
- Audio routing not working with external interfaces

**Most requested features**

- AU v3 plugin support for modern DAW integration
- Audiobus 3 and IAA (Inter-App Audio) support
- Core MIDI support beyond Akai controllers
- Lightning to USB audio interface compatibility
- Custom word/text input for voice synthesis
- Metronome for sequencer alignment
- Direct audio export and playback within app
- Improved sequencer with copy/paste/undo functionality
- Bluetooth audio output support
- Sync options for modern music production
- Better microphone input handling
- Volume normalization and better level controls
- Ability to delete recorded voxels
- More comprehensive tutorial and help system

## Recent user reviews (10 of 204)

All indexed reviews: https://appshunter.io/ios/app/ivoxel/id382428641/reviews.md

### 1/5 — IVoxel

*2026-02-05*

Hello….how do I get a refund….i couldn’t get the app to work at all…..not what i was expecting.

### 1/5 — Otra buena aplicación que se vuelve basura!

*2025-09-18, version 3.0.0*

Sin actualizaciones reales del creador, cada vez peor. Ni siquiera cabe en la pantalla del iPhone 13. Y en el iPad el sonido es malo y chafa. Tampoco es compatible con Audiobus !

### 2/5 — Seems like great app but buggy/ hangs

*2025-01-05*

Just got this and seems like a great app, but, running this on a 2019 iPad Pro (iOS 18) in standalone mode with nothing else running, the app hangs, especially when I try to change to a different preset. It just starts to run a random sound in the background, and sometimes I can change some settings and sometimes I can’t. For the most part once that weird noise starts, I can’t change anything, can’t change to a different preset, etc., and I just have to close the program out and reboot it.  I really want to like this app, but right now it just seems buggy and unusable for me, and I’m bummed that I wasted my money on it. I was considering also getting the matrix vocoder, but now I’m not so sure if I should. As inexpensive as these apps are, I’m low income and I really wish I could get a refund so I can buy something else that will work for me. I’ll be happy to change my review if this gets fixed, because it otherwise seems like it should be a really great app and I know other people have had success with it.

### 4/5 — Latest Update has broken a great app for older devices

*2024-12-25*

Sadly the iOS 18 compatibility update has broken it for me (accidentally/ stupidly updated to the latest version). I don’t have the storage space to update to 18 (on 17 running an old iPad Air 3). It now doesn’t recognise voxel changes or input and crashes regularly. It was an amazing app for me prior to this so I’m still giving it 4 stars. Any chance of a fix for older iPads?

### 5/5 — Bad rating for potent app

*2024-11-29*

If you do not notice the volume knob (it is in a strange spot, but still, there it is), what do you do? Leave a bad review, delete the app.

If there are too many functions to "figure out", and you take a manual as an insult, what do you do? Well, yes, you leave a nasty review and complain about wasting SEVEN dollars.

Look, there are some quirky things in iVoxel that should have been addressed over time. Yes, the sequencer is slightly fiddly and balky, but it is there, with all the voxels at your disposal for tune writing for your choir of crazy, spectrally shaped voices. This is a remarkable vocal-sound-design tool (warts and all) musical with all sorts of uses. After all the years it has been on the app store, there is still nothing like it.

That people have dragged this app down with lazy complaints here rather than sending them to the developer strikes me as odd. Maybe the developer is hard to reach? I have never found one of his apps so confusing I need to make contact.

The app is worth exploring and enjoying, even in late 2024. It deserves to get some refinement and update love from Harry for the new year, but that is his call.

### 1/5 — Actually disappointed

*2023-03-30*

You only can vocode a prerecorded sequence. There is no possibility to map controls to midi controls. The sequencer cannot be synced to any other like via ableton link. 
An update should add these possibilities.

### 1/5 — Bezahlt und nicht herunterladbar

*2023-02-28*

Ich habe IVoxel für mein Ipad gekauft, dort funktionierte es nicht. Also wollte ich es auf meinem Mac herunterladen. Geht nicht, es sei denn, ich bezahle ein zweites Mal…

### 5/5 — The sounds are spot-on in my opinion

*2022-08-23, version 2.9.2*

I don’t know why this app has had so many bad reviews. I saw a demonstration of it on YouTube I thought it sounded amazing but hesitated buying it once I saw the bad reviews. Exactly what I was hoping it would be. The sound is perfect in my opinion. If you don’t believe me just look it up on YouTube.

### 1/5 — Cannot use

*2022-05-17, version 2.9.2*

This app might be great if they update it! Just purchased today 5/13/22 after reading information about app in the listing. It’s not clear about the microphone connection. Seems like you will need irig 3.5 jack interface. Sound for vocoder only comes through headphone 3.5 jack? Lightning to usb interface does not work for mic connection to use as live vocoder after pressing mic icon. I don’t want to use the vocoder presets. So I cannot use unless I buy irig interface (over $100) not worth it. I have 2x interface units already. AUM does not recognize as IAA or AU, others claim Audiobus does as IAA (shoulder shrug). Lost $7 plus tax on this app, unless they update to au and allow sound to pass through lightning to usb for interface mic connection. Need to be CLEAR ON THAT IN THEIR LISTING. Can be 5 star with update guys! Lost money on this.😞, fingers crossed for update🤞 or I will delete app and move on.

### 5/5 — A great voice app

*2021-12-21*

Thanks for a wonderful unique app. I Can spend hours just experimenting with sounds. Children just love it. It is so much fun. I’ve had this app for a year or more and still love it. It deserves maximum stars

## Frequently asked questions about iVoxel

### What does iVoxel do?

iVoxel is a unique app that combines a voice-optimized synthesizer with a powerful vocoder. It allows you to transform your voice in real-time, creating a 'singing machine' effect. You can manipulate pitch, gender, and other vocal characteristics, and even record and play back your own voice spectrums as 'voxels'.

### What are the key features of iVoxel?

Key features include real-time voice analysis and resynthesis, a 20+2 channel vocoder, pitch follower with automatic tuning to selectable scales, a voice spectrum recorder (voxels) with nearly 300 included, and the ability to play your vocoded voice live on a keyboard. It also boasts a polyphonic synthesizer with analog waves and various voice manipulation effects like gender change and pitch vibrato.

### How much does iVoxel cost?

Based on the provided information, iVoxel is a paid application. There are no mentions of free trials, subscriptions, or in-app purchases, indicating a one-time purchase model.

### What are some common use cases for iVoxel?

iVoxel can be used in multiple ways. You can use it as a real-time vocoder by singing into the microphone while playing tunes on the keyboard. It's also useful for recording the analyzed spectrum of your voice to create unique vocal instruments. Musicians can use it to sing over their favorite songs or integrate it into their existing music production workflow via Audiobus.

### Is iVoxel compatible with other music apps?

Yes, iVoxel is Audiobus compatible, allowing it to be used in the Input, Filter, and Output slots of an Audiobus signal chain. It also supports Virtual MIDI and Background audio, and is compatible with CoreMIDI and Korg/WIST standards, enabling seamless integration with other music applications and hardware.

## Version history (last 5 releases)

### 3.0.0 — 2024-11-28

- iOS18: fixes issues with sound quality

### 2.9.2 — 2017-02-24

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

- Fixed broken sound on iPhone 6s / 7

### 2.9.1 — 2016-03-30

- CoreMIDI problem fixed

### 2.9.0 — 2016-03-16

- Overall improved sound quality
- Stereo carrier waves
- New internal stereo sound source
- Vocal pitch can generate realtime MIDI note messages
- Adjustable microphone level
- Audio sharing
- Sample & Go improved function
- iOS 7 minimum requirement now
- Keyboard responds now to white keys in between black keys
- Bugfixes

### 2.8.0 — 2015-09-22

- Voxel import via "open in" and AudioPaste
- Sample & Go real time voxel recorder with optional MIDI Pedal control
- Voxel graphic: scrubbing improved.
- Mute output on voxel recording if Headphone not plugged in
- Other sample rates supported
- Bug fixes
- SynthStation 25 support removed

## Apps similar to iVoxel

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Kauldron Synthesizer](https://appshunter.io/ios/app/kauldron-synthesizer/id1292510609) | 4.6 (136) | $9.99 | Music |
| [Agonizer](https://appshunter.io/ios/app/agonizer/id1499426175) | 4.8 (203) | $7.99 | Music |
| [The Manetron](https://appshunter.io/ios/app/the-manetron/id1641254309) | 3.8 (4) | $3.99 | Music |
| [BLEASS Dragonfly](https://appshunter.io/ios/app/bleass-dragonfly/id1580935730) | 4.8 (17) | $7.99 | Music |
| [RE-1 Tape Machine](https://appshunter.io/ios/app/re-1-tape-machine/id1407764053) | 4.7 (132) | $4.99 | Music |
| [Voice Synth](https://appshunter.io/ios/app/voice-synth/id490511069) | 4.1 (333) | $8.99 | Music |

## More apps by Harry Gohs

- [iSyn Poly](https://appshunter.io/ios/app/isyn-poly/id443141370)
- [Addictive Synth](https://appshunter.io/ios/app/addictive-synth/id447072653)
- [Addictive microSynth](https://appshunter.io/ios/app/addictive-microsynth/id455651228)
- [Harmony Voice](https://appshunter.io/ios/app/harmony-voice/id532501340)
- [AudioReverb](https://appshunter.io/ios/app/audioreverb/id670248970)

All apps by Harry Gohs: https://appshunter.io/developer/382428644

## Related topics

[ivoxel](https://appshunter.io/ios/topics/ivoxel)

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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 2026-08-30.*