# Stellr vs GSDSP Quantum Distortion

The clearest difference is price: Stellr at $4.99 against GSDSP Quantum Distortion's $14.99. GSDSP Quantum Distortion's advantage is rating (5.0 vs 3.4) and review sentiment (100% vs 67%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Stellr costs $4.99 and GSDSP Quantum Distortion $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 3.4. Both are backed by a comparable volume of ratings — 9 and 10 respectively. Written reviews point the same way: 67% of Stellr's written reviews are positive against 100% of GSDSP Quantum Distortion's.

Stellr ships an update every 40 months, GSDSP Quantum Distortion every 5 weeks. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Stellr | GSDSP Quantum Distortion |
| --- | --- | --- |
| Price | **$4.99** | $14.99 |
| Rating | [3.4 (9 ratings)](https://appshunter.io/ios/app/stellr/id1448350913/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-distortion/id6476145487/reviews)** |
| Number of ratings | 9 | **10** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 26 MB | 80 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BACKPULLVER SOFTWARE LTD OOD](https://appshunter.io/developer/1035157788) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### Stellr

[App page](https://appshunter.io/ios/app/stellr/id1448350913)

Create deep, ethereal ambiance with a pitch-shifter, dual delays, and reverb. Explore sonic possibilities with 15 presets, randomization, and parameter automation. Enhance your music with a new dimension of sound.

**Highlights:** Pitch shifter with fine-tuning or semitone snap, Two independent delays for complex feedback, LFO modulation and various reverb types, Pre-gain and dry/wet level control, Audio Unit Extension, Audiobus, Inter-App Audio support, 15 built-in presets with import/export, Realtime frequency spectrum visualizer

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Stellr free?

Stellr costs $4.99, with no in-app purchases.

### Is GSDSP Quantum Distortion free?

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

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

GSDSP Quantum Distortion is rated higher. Stellr averages 3.4 out of 5 from 9 ratings, while GSDSP Quantum Distortion averages 5.0 from 10 ratings.

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

Neither Stellr nor GSDSP Quantum Distortion shows ads.

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

Stellr ships an update every 40 months, and GSDSP Quantum Distortion every 5 weeks. Most recently, Stellr was updated on October 19, 2026 and GSDSP Quantum Distortion on October 24, 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.*