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.


• 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)

What's New

Version 2.9.2

- Fixed broken sound on iPhone 6s / 7

Ratings and Reviews



Everything sounds like a whisper and importing sounds is a massive pain

Well I am stoked - it's back!


I has been reading the reviews and saw how this great vocoder, possibly the best on iOS, just eroded away to the point where it didn't even work. Combined with how far back the last update was, I didn't take any chances and just waited. Patiently.

And I knew it would happen! Well, I hoped anyway, that eventually an update would come out of nowhere and it would be back in business. So I downloaded (on sale to boot!) and it's everything I hoped it was. I see now why it was the go to choice in so many demos a year or so back. My only quip is that I've had a few times where it just stops playing audio, not sure why, and only when sampling the demo sounds/settings. That, combined with the sequencer either not working correctly or there not being good "help you get started" help contextually available... Makes it hard to give it 5 stars. A solid 4? For sure.

Thanks to their team for bringing this back to life, I am super stoked and it's worth every penny! It was the missing piece I've been needing to fill for quite a while now. Nothing else out there fit the bill, at least not on this platform or anywhere near this price. Again, thank you!

Great app, even in iOS 8


Used to work perfectly for me in iOS 5,6,7. In iOS 8 it runs properly but there is no longer any sound. Maybe due to Audiobus issues? Figure by Propellerheads & Junglator give the iOS 8 Audiobus error when starting but I still get sound from those programs. Please update with full support for iOS 8 with Audiobus. I want to rate this app 5* again.

UPDATE: version 2.7.0 on September 19 fixed the Audiobus & no sound issues. Unfortunately the right side of the screen is now black on my iPhone 4S for this app so the keys & knobs on that side can't be operated. Getting closer. 😎I've emailed the developer so hopefully it'll be fixed soon.

UPDATE 2: Version 2.7.2 fixed the iPhone 4S display issues mentioned above. A+ developer for responding so quickly to users' issues with app.


VirSyn Software Synthesizer
59.7 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 VirSyn Software Synthesizer


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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