Comparison

AudioReverb vs GSDSP Quantum Delay

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

Head to head
About

AudioReverb

Apply studio-quality algorithmic reverberation to your music and audio. This app simulates acoustic spaces and classical reverb algorithms for a realistic sound. Enhance your music library or use it as a professional plugin with compatible hosts.

Highlights
  • Algorithmic reverberation
  • Early reflection modeling
  • 118 factory presets
  • 4-band equalizer
  • AUv3 compatible
  • Audiobus 3 compatible
  • Inter-app audio compatible
Features
Read full description

Studio quality reverb for AUv3 compatible hosts / Audiobus / Inter-app audio and songs from your iTunes music library. AudioReverb is an algorithmic reverberation app which combines the flexibility of vintage algorithmic reverbs with the sonic quality of convolution based reverbs.

 The creation of high quality reverb needs a realistic simulation of the important early reflections together with a smooth and colorless reverberation tail.

 The early reflections are the most important clue for the human ear to get a feeling about the dimension and character of a room. Most algorithmic reverbs offer a number of different algorithms to simulate different natural rooms like chamber, halls or artificial ones like plates.  AudioReverb uses impulse responses from real acoustic spaces and classical reverb algorithms to emulate their acoustical properties.

 The resulting reverberation sets new standards in clarity and sense of space ! Use AudioReverb for enhancing your listening experience with your favourite iTunes songs. Use AudioReverb as professional reverb plugin to improve the quality of any Audiobus or Inter-app audio compatible App. • Smooth reverb tail generation. • Early Reflection Modelling. • 118 factory presets. • 4 Band Equalizer. • AudioUnit for AUv3 compatible hosts. • Inter-app audio compatible effect. • Audiobus 3 compatible as effect. • Reverberate any song in your iTunes library. • Low latency live usage with mic and headphones. • Audio recorder. • Audio file export via pasteboard / open in / e-mail

About

GSDSP Quantum Delay

This app offers a vintage-inspired stereo delay effect with advanced modulation, flexible filtering, and precise timing controls. It allows users to sculpt unique echo textures, from warm analog sounds to complex, evolving soundscapes.

Highlights
  • Vintage-inspired stereo delay
  • Deep modulation system
  • Flexible filtering (LPF, HPF, BPF)
  • Precise timing controls (BPM, ms)
  • Switchable stereo/dual mono modes
  • Advanced modulation sources (LFO, Random, Envelope)
Features
Read full description

A vintage-inspired delay supercharged with deep modulation, flexible filtering, and creative timing that pushes echoes into new dimensions. Classic Delay, Reinvented Quantum Delay takes the charm of a vintage stereo delay and fuses it with our next-level modulation system. Switch between the warm character of Tape mode and the pristine clarity of Fade mode, lock to BPM (including 5-tuplets) or dial in precise times in milliseconds. Use the Fine control for subtle push-and-pull micro-timing — or modulate your delay lines in ways traditional delays could only dream of. Sculpted Echoes Shape your repeats with switchable lowpass, highpass, and bandpass filters placed directly in the feedback path. Add modulation to create evolving tones, gentle movement, or drifting, frequency-shifting echoes. From warm analog-style rolls to shimmering, swirling textures, it’s all there. Feedback with Precision Control your delay tail behavior using either traditional % feedback or our modern dB-per-second decay system — ideal for predictable, musical decay even when the feedback path becomes complex. Enable Crossfeed for classic ping-pong stereo bounce, or push into Over-Feedback to create dense, self-building echoes that drift toward infinity. Stereo or Dual Mono Every section of Quantum Delay — delay, filter, and feedback — can switch between stereo and dual mono modes. Create tight, controlled stereo images or break them apart for wide, offset, unpredictable spaces. Dual mono modulation unlocks complex stereo interplay and beautifully asymmetric echoes. Modulation Without Limits Quantum Delay integrates our advanced modulation system, letting you modulate nearly anything: delay time, filters, feedback parameters, stereo controls, and more. Use LFOs, Random Generators, 2D modulators, Envelope Followers, Macros, and even chaotic systems to push your echoes far beyond traditional delay behavior. Or use our parameter randomisation feature to explore the plugin’s sound at random. Quantum Delay 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

AudioReverb3 screens
GSDSP Quantum Delay3 screens

Verdict

The call

The clearest difference is price: AudioReverb at $1.99 against GSDSP Quantum Delay's $14.99. GSDSP Quantum Delay's advantage is rating (4.8 vs 3.9) and review sentiment (100% vs 65%). On ratings volume, ads, in-app purchases and monetization model 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

AudioReverb costs $1.99 and GSDSP Quantum Delay $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

GSDSP Quantum Delay holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 22 and 17 respectively. Written reviews point the same way: 65% of AudioReverb's written reviews are positive against 100% of GSDSP Quantum Delay's.

UpkeepUpdate frequency

AudioReverb ships an update every 4 months, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
AudioReverb versus GSDSP Quantum Delay: the parameters behind the verdict, then further details
ParameterAudioReverbGSDSP Quantum Delay
Price$1.99 — better$14.99
Rating3.9 (22 ratings)4.8 (17 ratings) — better
Positive reviews64.9% of reviews100.0% of reviews — better
Number of ratings22 — better17
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size14 MB94 MB
Age rating4+4+
DeveloperHarry GohsGustav Scholda

Customer experience

AudioReverb

All ratings22 ratings
Positive63.6%
Neutral13.6%
Negative22.7%
Written reviews57 reviews
Positive64.9%
Neutral12.3%
Negative22.8%

GSDSP Quantum Delay

All ratings17 ratings
Positive94.1%
Neutral0.0%
Negative5.9%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

AudioReverb

No in-app purchases

None

GSDSP Quantum Delay

No in-app purchases

Questions

Is AudioReverb free?
AudioReverb costs $1.99, with no in-app purchases.
Is GSDSP Quantum Delay free?
GSDSP Quantum Delay costs $14.99, with no in-app purchases.
Which has better reviews, AudioReverb or GSDSP Quantum Delay?
GSDSP Quantum Delay is rated higher. AudioReverb averages 3.9 out of 5 from 22 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.
Do AudioReverb or GSDSP Quantum Delay have ads?
Neither AudioReverb nor GSDSP Quantum Delay shows ads.
Which is updated more often, AudioReverb or GSDSP Quantum Delay?
AudioReverb ships an update every 4 months, and GSDSP Quantum Delay every 5 weeks. Most recently, AudioReverb was updated on September 23, 2026 and GSDSP Quantum Delay on September 22, 2026.

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