Voco is a touch-controlled phase vocoder for manipulating sampled sound.

The sound is mapped onto the screen, with time running left to right, and pitch up and down. By touching the screen the sound can be manipulated and played like an instrument.

Sounds can be sampled from the microphone, via Audiobus, or loaded from iTunes or AudioShare.

What's New

Version 2.3.1

Fixed issue with shrunken screen on iPad Pro & iPad 6+

Ratings and Reviews



Using the previous version on an iPod Touch 4th Gen. Works like a charm. Astounding. Very versatile little toy. If you do electronic music, you NEED one. More stable in doing what the Kaoss Pad was doing with loops and samples, and more possibilities.

If you know the track "One Minute Warning" (by Brian Eno/U2/"The Passengers", also the end credits music for the first "Ghost In The Shell" movie, it can do what they did with the female vox sample, just as one for-instance.

I'd buy a premium, higher-priced version that a. permitted altering color schemes, b. had a more precise toggle for the loop time (in centiseconds, perhaps, to get better "stutter" or "grain synthesis"),c. was "universal" (thus more units, thus can really have fun onstage, rather than just be a studio tool) and d. could follow a "drawn" path for the Glide function. Also it would be cool if it were still backwards compatible with IOS 5 and 6.

Everything an app should be


It's inexpensive, a ton of fun, and easy to use. Conceptually simple, yet capable of powerful results. I'll bet you a dollar that David Lynch has a copy of this on _his_ iOS device. 5 stars from me, even though I hope the developer will add some kind of MIDI control in the future. But as it stands right now with Audiobus and AudioCopy support, it's still musically useful. And fun. And isn't that what it's all really about?

If you like this app, you should check out PhonoPaper, too.

Awesome app


This app is great. So much potential. I love the glide mode. If you open the info window while in glide mode and touch the info page you can get the sound to freeze. I would love to see the ability to disable pitch, a random mode for glide, and yes, polyphony would be rad. Sample in some drums or a drone from a synth while scrolling through different waveforms and put it in glide mode and see what happens.


Jonathan Mackenzie
4 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Jonathan Mackenzie


  • Family Sharing

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

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