# GSDSP Quantum Distortion vs NotePulse

The clearest difference is price: NotePulse at $0.99 against GSDSP Quantum Distortion's $14.99. NotePulse also leads on update cadence (every 10 days vs every 5 weeks). GSDSP Quantum Distortion's advantage is iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

GSDSP Quantum Distortion costs $14.99 and NotePulse $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GSDSP Quantum Distortion ships an update every 5 weeks, NotePulse every 10 days. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | GSDSP Quantum Distortion | NotePulse |
| --- | --- | --- |
| Price | $14.99 | **$0.99** |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-distortion/id6476145487/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | Paid | — |
| Size | 80 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gustav Scholda](https://appshunter.io/developer/1642323227) | [Noorcon Inc.](https://appshunter.io/developer/656997884) |

## 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


### NotePulse

[App page](https://appshunter.io/ios/app/notepulse-midi-visualizer/id6810961670)

**Features:** macOS Compatibility, 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 NotePulse free?

NotePulse costs $0.99, with no in-app purchases.

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

Neither GSDSP Quantum Distortion nor NotePulse shows ads.

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

GSDSP Quantum Distortion ships an update every 5 weeks, and NotePulse every 10 days. Most recently, GSDSP Quantum Distortion was updated on October 24, 2026 and NotePulse on October 7, 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.*