Quanta Granular Synth 4+

AUv3 and Standalone Granular

Audio Damage, Inc.

    • 4.0 • 4 Ratings
    • $6.99

iPad Screenshots


Quanta is a six-voice granular synthesizer for iOS11+ in both standalone (with Inter-App Audio) and AudioUnit V3 formats. Quanta for iPad is fully compatible with the full version of Quanta for macOS and Windows; visit audiodamage.com for a PDF manual, audio samples, and video demonstrations.

Quanta will work on any iPad that can run iOS 11, but keep in mind that it is a feature-heavy desktop quality synthesizer, and would prefer a 2017/2018 iPad, or an iPad Pro. If you're experiencing CPU issues on lower-end machines with the standalone, try changing the main display to FEG or FLFO, which don't require redrawing and which will be significantly lower in CPU usage.

>> Multi-Format Sample Loader
Quanta can load AIFF, WAV, Broadcast WAV, FLAC, MP3, and Ogg in any sample rate, bit depth, and channel configuration.

>> Grain Engine
Up to 100 simultaneous grains per voice, of up to 1 second long, with control over grain rate, pitch, direction, shape, length, panning, source position, and level.

>> Sidecar Oscillator
Continuously variable wave shape, with pulse width modulation, and independent control over pitch (separate from grain engine.) Can be injected directly into grain engine.

>> Noise Source
Noise source features a "color" control that affects tonal characteristics of the noise. Can be injected directly into grain engine.

>> Dual Multi-Mode Filters
Filters can be used in serial or parallel modes, and include lowpass, highpass, bandpass, and notch in 2-pole and 4-pole configurations.

>> Flexible Envelope Generator (FEG) x 4
The four FEGs are arbitrary function generators, with up to 99 steps, curve and step level control, arbitrary loop points, and host tempo sync.

>> Flexible Low-Frequency Oscillator (FLFO) x 2
The pair of FLFOs utilize four controls (phase, shape, skew, and warp) to access a virtually limitless palette of waveforms, and feature host tempo sync and retrigger.

>> Sample And Hold
The S&H mod source can sample noise (random) or any of the other mod sources, at either a user-defined rate or a musical division.

>> Modulation Matrix
Every mod and MIDI source can be easily and simply assigned to any destination using the quick-access bi-polar modulation matrix. Touch a destination on the UI and the matrix automatically scrolls to the correct row.

>> Tuning Tables And Global Tuning Offset
Re-tune Quanta to new intonations and temperaments using the open-source and easy-to-use TUN file format. A global tuning offset (default to A=440) allows you to easily retune the entire synth to match a different A frequency without using a tuning table.

>> MPE (MIDI Polyphonic Expression)
Quanta understands both "legacy" MIDI and MPE. Use your Linnstrument, Roli controller, Haken Continuum, or Madrona Labs Soundplane (among others) to directly access per-note pressure, pitch bend, and modulation.

>> Per-Instance Settings
Quanta utilizes a per-instance customization method: set MPE mode, aftertouch smoothing, pitch bend range override, tuning table, and global tuning offset for each instance in your AUv3 host.

>> Factory Presets
Quanta comes with a substantial collection of factory content, including Designer Presets from Marcus Fisher, Joseph Fraioli, Chris Carter, and Richard Devine.

>> Cross-Platform Preset Format
Quanta utilizes an XML-based preset manager, and stores the sample within the preset for easy asset management. Work between multiple systems without troubles, make a preset on your desktop machine and paste it to the iOS version with Handoff or vice-versa, easily share your creations with your friends, or make a preset bundle to sell, no asset management required.

>> Fully Resizable Retina GUI
Quanta's vector-based GUI is resolution-agnostic, and displays the same on every system and resolution. Easily resize the UI (per instance) to match your visual needs, from postage stamp to poster-sized.

What’s New

Version 1.2.5

>> Fixed an issue with the Sample & Hold source menu selector.

Ratings and Reviews

4.0 out of 5
4 Ratings

4 Ratings

lofidelityrockr ,

Usually I have nothing but trouble to report...

I am finally satisfied with a granular app that works and sounds good. I especially liked the email that went out this morning from Audio Damage telling me about the free Soundpacks I could get to load into the app. They sound great and I take back some of my gripes I have using your apps... just some since I still have unresolved issues with the other apps I emailed the Dev about.

I highly recommend you get this app even if you are running the other granulars out there. It helps to have options and more range in your musical toolbox.

mrdogheadSHoGoAT ,

Great synth, welcome update

It is always good to see AD releasing work for mobile devices, and good as well to hear news about laptop/desktop formats. Those should not be, at this late date in computer history, separate categories. Computers are computers, and the questions are which UI, OS, and processor standards to target for a given software product. Increasingly, mobile platforms dominate actual computer use, yet tech companies insist on hamstringing mobile systems to preserve broad use of multiple platforms that are not fully compatible.

Aside stated, my joy at AD embracing at least Apple mobile - and my happiness about this new update to a key granular synth for musician pads - took a blow recently when I read of the release of the developer’s latest synth. Apparently, AD feels their new synth release is too complex for PadOS. Maybe the story is more that it would be too much of a hassle to port the synth to mobile, given the low prices and high expectations in this market segment.

I hope users of mobile AD products can convince the developers to stick with us and to offer us the full range of AD software.

In the meantime, I’ll be tucking into this update. If you haven’t yet bought Quanta and you happen to have read this odd nonreview, you are the type of person who should just buy the synth.

metik2009 ,

Amazing before it explodes

I’m not one typically to write reviews about an app, but I’m hoping someone will read this and it will save them from experiencing the same headache I’ve had with this app. I want to preface this by saying this synth is an AWESOME granular synth, it has great modulation built in and the sound quality is comparable to some of the $300+ plug ins they make for desktop computers. That’s not the issue with the program.

The problem is stability. I’ve been using it as auv3 in BeatMaker and have experienced it crashing EVERY time I have it in a project I’m working on. To make matters worse, it doesn’t just crash BeatMaker - it corrupts whatever project I loaded it in to, leaving the project destroyed. I’ve lost weeks of work from this app, which is heartbreaking because I’ve really enjoyed it when it’s working.

I really hope this is addressed in future updates because the app is unusable for me in this state, but I’m still giving it 3 stars for the things it does do.

App Privacy

The developer, Audio Damage, Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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