GrainProc is a real-time granular synthesizer with which you can create new sounds and musical textures by affecting your voice, your instrument, or any input from AudioBus. 2 grain engines run in parallel, allowing you to layer two sounds and create rich textures, even as a solo performer!

• 2 Granular synthesizers running in parallel
• Waveform representation of the sound allowing you to touch where you want the sound source to be
• Sliders to control dry volume, wet volume, feedback level, and grain density
• Visual level monitors of the dry, wet and feedback levels
• Simple enough to be used with your feet! We discourage using your device with your feet, though it has been used that way for public performances!

What’s New

Version 4.4.3

• bugfixes and performance improvements

Ratings and Reviews

4.1 out of 5
8 Ratings

8 Ratings

OldDog Fu ,

Simple, Immediate, Gratifying

Just picked this back up after using other granular apps, and the simple interface, with immediate understandable interface feedback, was gratifying. Not a substitute for other granular tools, but well worth having in the toolkit.

WarMaster Photos ,


Audiobus support just turned this into a 5-star app. Very useful.

This is a small gripe, and no offense meant, but the only issue I have is I think the font used in the app is a bit tacky. The color scheme could also be prettier...but these are cosmetic issues (and just my opinion). They don't take away from the fact that this app is now officially totally awesome.

skiphunt ,

Likely needs an update

But, still cool. I’ve got a white block to the right of the blue page, and I’m not sure why it’s there. My install has never animated as it does in the demo videos. I’ve re-installed. No change.


Mayank Sanganeria
11 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Mayank Sanganeria, Kurt James Werner


  • Family Sharing

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

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