# GSDSP Quantum Distortion vs VAPolyMkII

The clearest difference is rating: GSDSP Quantum Distortion at 5.0 against VAPolyMkII's 4.5. GSDSP Quantum Distortion also leads on review sentiment (100% vs 67%) and iOS requirement (12.0 vs 16.6). VAPolyMkII's advantage is update cadence (weekly vs every 5 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

GSDSP Quantum Distortion holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 10 and 11 respectively. Written reviews point the same way: 100% of GSDSP Quantum Distortion's written reviews are positive against 67% of VAPolyMkII's.

GSDSP Quantum Distortion ships an update every 5 weeks, VAPolyMkII weekly. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | GSDSP Quantum Distortion | VAPolyMkII |
| --- | --- | --- |
| Price | $14.99 | $14.99 |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-distortion/id6476145487/reviews)** | [4.5 (11 ratings)](https://appshunter.io/ios/app/vapolymkii/id6476809566/reviews) |
| Number of ratings | 10 | **11** |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Paid | Paid |
| Size | 80 MB | 16 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Gustav Scholda](https://appshunter.io/developer/1642323227) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## What reviewers say

### GSDSP Quantum Distortion

[App page](https://appshunter.io/ios/app/gsdsp-quantum-distortion/id6476145487)

Explore four distinct distortion effects—Saturation, BitCrush, Ring Modulation, and Downsampling—blended and controlled via an intuitive XY pad. Shape harmonics, reduce digital resolution, introduce inharmonic motion, and create classic digital degradation for unique audio textures.

**Highlights:** Four distortion algorithms (Saturation, BitCrush, Ring Modulation, Downsampling), Intuitive XY pad for blending effects, Custom waveshaping saturation, BitWarp for tonal variation, Tunable oscillator for ring modulation, Adjustable downsampling rate and jitter, AUv3 audio effect plugin

**Features:** Vision Pro support

**In-app purchases:** none


### VAPolyMkII

[App page](https://appshunter.io/ios/app/vapolymkii/id6476809566)

This virtual analog synthesizer offers a 16-voice bitimbral polyphonic sound engine with two distinct filter models and extensive modulation options. It includes a built-in sequencer, various effects, and supports AudioUnit Extension for integration with DAWs. Projects can be synced across iPhone, iPad, and Mac via iCloud.

**Highlights:** 16-voice bitimbral polyphonic synthesizer, Two analog-modeled filter types, Extensive modulation capabilities, Built-in piano roll sequencer, Multiple audio effects, AudioUnit Extension (AUv3) support, iCloud Drive project syncing

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GSDSP Quantum Distortion free?

GSDSP Quantum Distortion costs $14.99, with no in-app purchases.

### Is VAPolyMkII free?

VAPolyMkII costs $14.99, with no in-app purchases.

### Which has better reviews, GSDSP Quantum Distortion or VAPolyMkII?

GSDSP Quantum Distortion is rated higher. GSDSP Quantum Distortion averages 5.0 out of 5 from 10 ratings, while VAPolyMkII averages 4.5 from 11 ratings.

### Do GSDSP Quantum Distortion or VAPolyMkII have ads?

Neither GSDSP Quantum Distortion nor VAPolyMkII shows ads.

### Which is updated more often, GSDSP Quantum Distortion or VAPolyMkII?

GSDSP Quantum Distortion ships an update every 5 weeks, and VAPolyMkII weekly. Most recently, GSDSP Quantum Distortion was updated on September 22, 2026 and VAPolyMkII on September 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*