Comparison

EG ModernFX AU3 Multi effects vs GSDSP Quantum Distortion

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

Head to head
About

EG ModernFX AU3 Multi effects

Enhance your audio tracks with a variety of modern multieffects. This app offers 8 distinct effects, each with adjustable parameters and the ability to be bypassed. It supports AU3 multi-output and MIDI CC automation for flexible integration into your digital audio workstation.

Highlights
  • 8 modern audio effects
  • Tweakable effects with bypass
  • AU3 multi-output support
  • MIDI CC automation
  • Multitouch effect modulation
  • Live mode for on-the-fly effects
  • Reorderable effect chain
  • Preset saving and randomization
Features
Read full description

EG ModernFX is a simple, fast and fun to use way to add multieffects to your audio tracks. Features: - 8 modern effects - Bitcrusher, Ring Modulation, Fuzz Octaver, Vintage Saturation, Full-Wave Rectification Distortion, Resonant Filter, Auto Pan, Stereo Spread - each effect is tweakable and can be bypassed (double tap on the mix slider) - AU3 multi-output - send each effect to a different output bus - Each parameter can be automated via MIDI cc in your favorite daw - Multitouch effect view to modulate effects to temporary state - Live mode to apply effects on the fly and bypass them on release - Effect chain can be re ordered - Presets saving - Randomize effects parameters - Built-in automation - Built in presets created by Eyal Levy and Jamie Mallender PLEASE NOTE: This is not a standalone app, but you need an AU3 compatible host like n-Track, AUM, Auria, Cubasis or Beatmaker3

About

GSDSP Quantum Distortion

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
Read full description

Four complementary distortion algorithms — Saturation, BitCrush, Ring Modulation, and Downsampling — blended and shaped through an intuitive XY pad. Saturation Shape harmonics using Quantum Distortion’s custom waveshaping saturation. Adjust Drive to set the intensity from subtle warmth to strong coloration, and use Asymmetry to introduce controlled even-harmonic emphasis of vintage tube characteristics. BitCrush Reduce digital resolution using BitCrush and reshape the crushed signal with BitWarp, which bends the quantization curve for additional tonal variation. This combination allows precise control over both the amount of reduction and the character of the resulting digital artifacts. Ring Modulation Introduce inharmonic motion using ring modulation, generated by multiplying the input with a tunable oscillator. Adjust frequency and amount in real time to create anything from light metallic shading to dense, shifting sidebands. Downsampling Lower the sample rate using Downsampling, reducing temporal resolution for classic digital degradation effects. Set the rate down to 200 Hz or introduce Jitter for controlled randomness, adding instability and movement to the downsampled signal. XY Pad Blending Navigate between the four distortion algorithms using the XY pad, allowing smooth transitions or static blends across the processing modes. The background updates to reflect the current region, providing clear visual feedback while exploring hybrid distortion shapes and interactions. Quantum Distortion 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

Screenshots

EG ModernFX AU3 Multi effects3 screens
GSDSP Quantum Distortion3 screens

Verdict

The call

The clearest difference is price: EG ModernFX AU3 Multi effects at $3.99 against GSDSP Quantum Distortion's $14.99. EG ModernFX AU3 Multi effects also leads on update cadence (weekly vs every 5 weeks) and iOS requirement (8.0 vs 13.0). On rating, review sentiment, 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

EG ModernFX AU3 Multi effects costs $3.99 and GSDSP Quantum Distortion $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 EG ModernFX AU3 Multi effects against 5.0 for GSDSP Quantum Distortion. Both are backed by a comparable volume of ratings — 4 and 10 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

EG ModernFX AU3 Multi effects ships an update weekly, GSDSP Quantum Distortion every 5 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level
EG ModernFX AU3 Multi effects versus GSDSP Quantum Distortion: the parameters behind the verdict, then further details
ParameterEG ModernFX AU3 Multi effectsGSDSP Quantum Distortion
Price$3.99 — better$14.99
Rating5.0 (4 ratings)5.0 (10 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings410 — better
Update frequencyWeekly — betterEvery 5 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better13.0
Further details — not scored
Size31 MB80 MB
Age rating4+4+
DeveloperElliott GarageGustav Scholda

Customer experience

EG ModernFX AU3 Multi effects

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

GSDSP Quantum Distortion

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

EG ModernFX AU3 Multi effects

No in-app purchases

None

GSDSP Quantum Distortion

No in-app purchases

Questions

Is EG ModernFX AU3 Multi effects free?
EG ModernFX AU3 Multi effects costs $3.99, 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, EG ModernFX AU3 Multi effects or GSDSP Quantum Distortion?
EG ModernFX AU3 Multi effects and GSDSP Quantum Distortion are both rated 5.0 out of 5 on the App Store, from 4 and 10 ratings respectively.
Do EG ModernFX AU3 Multi effects or GSDSP Quantum Distortion have ads?
Neither EG ModernFX AU3 Multi effects nor GSDSP Quantum Distortion shows ads.
Which is updated more often, EG ModernFX AU3 Multi effects or GSDSP Quantum Distortion?
EG ModernFX AU3 Multi effects ships an update weekly, and GSDSP Quantum Distortion every 5 weeks. Most recently, EG ModernFX AU3 Multi effects was updated on November 3, 2026 and GSDSP Quantum Distortion on November 4, 2026.

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