Comparison

GSDSP Quantum Granulator vs VAPolyTZFM

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GSDSP Quantum Granulator

This live granular processor allows you to break down audio into small pieces or create atmospheric soundscapes. It features dual live buffers, a musical grain engine with tempo sync, and expressive pitch control with MIDI support. Shape your sound with an intuitive XY pad and mix section for detailed sonic manipulation.

Highlights
  • Dual live recording buffers
  • Tempo-synced grain triggering
  • Expressive pitch control with scales
  • 2D XY pad for grain shaping
  • MIDI playable granular instrument
  • AUv3 audio effect plugin
Features
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This Live Granular Processor lets you decompose audio into bits and pieces or lovely clouds. Dual Live Buffers Quantum Granulator is a powerful live granular processor designed for deep, hands-on sonic manipulation in real-time. Two independent recording buffers capture your signal and let you freeze, loop, or continuously record audio for instant transformation. Whether you’re sampling from the Main Input, Sidechain A, or Sidechain B, you’re in full control of what goes in — and what comes out. Musical Grain Engine Trigger grains freely in Hz or lock them to tempo for tight rhythmic effects. Adjust grain length, offset and density — from crisp stutters to blurred, cinematic clouds. Randomization adapts to your mode: in Hz it behaves like a geiger counter, adding sharp, bursty unpredictability; in BPM sync it becomes more spray-like, scattering grains around the beat for rhythmically coherent textures. Expressive Pitch Control Our easy-to-use scale picker lets you quantize grains to 30+ built-in musical scales, create your own, or let randomness take over. Play grains via MIDI to turn Quantum Granulator into an expressive granular instrument. Pitch shifting covers a broad ±24 semitone range and a separate fine control allows subtle adjustments within ±1 semitone, perfect for microtonal tuning or adding vibrato-like motion. Versatile Grain Shaping An intuitive 2D Envelope XY pad lets you sharpen or soften vertically, adjust attack and release horizontally. Control level, panning, and filtering to craft subtle movement or fully chaotic sound clusters. Shape the balance using the mix section — from subtle texture to complete granular obliteration. Granular Synthesis, Made Playable Quantum Granulator isn’t just a tool — it’s an instrument. Built for performers, producers, and sound explorers alike, it offers a deep but immediate interface into the world of granular synthesis, with every detail tuned for musicality and expression. Quantum Granulator is an AUv3 audio effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more. A Desktop version is also available for Windows and macOS (VST3 / AU / AAX). More information here: https://gs-dsp.com/products

About

VAPolyTZFM

This app is a polyphonic synthesizer that utilizes Through Zero FM for musical sound generation. It offers a standalone mode with Ableton Link and MIDI support, as well as an AudioUnit Extension for use with other music software. Built-in effects and iCloud Drive integration enhance its creative capabilities.

Highlights
  • Through Zero FM synthesis
  • AudioUnit Extension (AUv3) support
  • Ableton Link and MIDI connectivity
  • Built-in effects suite
  • iCloud Drive project sharing
  • Analog style step sequencer
  • Up to 8 voice polyphony
Features
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VAPolyTZFM is polyphonic synthesizer featuring Through Zero FM, which is a type of linear frequency modulation and it is capable to maintain the pitch therefore it can deliver more musical results. VAPolyTZFM operates as a stand alone or as an AudioUnit Extension (AUv3) for iPhone, iPad and Mac. Stand Alone supports Ableton Link, MIDI and audio file export. Built-in Effects include delay, chorus, flanger, reverb, eq and compressor. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. Main Features Through Zero FM Analog Style Step Sequencer. Eight Assignable Controllers. Maximum 8 voice polyphony. it depends on performance of the device it is running. Built-in effects and piano roll sequencer. Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Audio Unit Extension (AUv3). Support MIDI 2.0. Support Foot Pedal and Per Note Control. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Include 256 Factory Presets. Improvements Support MIDI Foot Pedal (CC#11, CC#64) Support MIDI2.0 Per Note Control Messages MIDI CC Settings are saved. It will be recovered when the app launched in the next time. System Requirements iOS 17.0 or later Devices with Apple Silicon are recommended. A13 Fusion or above is highly recommended. if sound is distorted when using a device with less CPU power, reduce number of voices. AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension.

Screenshots

GSDSP Quantum Granulator3 screens
VAPolyTZFM4 screens

Verdict

The call

GSDSP Quantum Granulator and VAPolyTZFM both sit at 5.0 stars, but that hides the real split: 100% of GSDSP Quantum Granulator's written reviews are positive against 50% of VAPolyTZFM's. GSDSP Quantum Granulator also leads on update cadence (every 6 weeks vs every 9 months) and iOS requirement (13.0 vs 16.6). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

GSDSP Quantum Granulator costs $14.99 and VAPolyTZFM $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for GSDSP Quantum Granulator against 5.0 for VAPolyTZFM. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews are what separate them: 100% of GSDSP Quantum Granulator's written reviews are positive against 50% of VAPolyTZFM's.

UpkeepUpdate frequency

GSDSP Quantum Granulator ships an update every 6 weeks, VAPolyTZFM every 9 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
GSDSP Quantum Granulator versus VAPolyTZFM: the parameters behind the verdict, then further details
ParameterGSDSP Quantum GranulatorVAPolyTZFM
Price$14.99$14.99
Rating5.0 (7 ratings)5.0 (3 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings7 — better3
Update frequencyEvery 6 weeks — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better16.6
Further details — not scored
Size61 MB17 MB
Age rating4+4+
DeveloperGustav ScholdaRyo Togawa

Customer experience

GSDSP Quantum Granulator

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

VAPolyTZFM

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

GSDSP Quantum Granulator

No in-app purchases

None

VAPolyTZFM

No in-app purchases

Questions

Is GSDSP Quantum Granulator free?
GSDSP Quantum Granulator costs $14.99, with no in-app purchases.
Is VAPolyTZFM free?
VAPolyTZFM costs $14.99, with no in-app purchases.
Which has better reviews, GSDSP Quantum Granulator or VAPolyTZFM?
GSDSP Quantum Granulator and VAPolyTZFM are both rated 5.0 out of 5 on the App Store, from 7 and 3 ratings respectively.
Do GSDSP Quantum Granulator or VAPolyTZFM have ads?
Neither GSDSP Quantum Granulator nor VAPolyTZFM shows ads.
Which is updated more often, GSDSP Quantum Granulator or VAPolyTZFM?
GSDSP Quantum Granulator ships an update every 6 weeks, and VAPolyTZFM every 9 months. Most recently, GSDSP Quantum Granulator was updated on October 30, 2026 and VAPolyTZFM on November 5, 2026.

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