Comparison

Transient Shaper 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

Transient Shaper

This audio plugin offers a simple yet powerful way to shape the attack and sustain of sounds. Its adaptive filters automatically adjust to various inputs, allowing precise control over transient intensity without complex settings. Achieve crisper attacks or soften harshness, and even silence note attacks entirely.

Highlights
  • Adaptive filters for automatic adjustment
  • Precise control over transient intensity
  • Ability to silence note attacks
  • Adjust sustain volume independently
  • Simple, intuitive controls
Features
Read full description

Blue Mangoo Transient Shaper is a high-quality transient designer effect. The key feature is the simplicity of the controls. The plugin's adaptive filters respond automatically to a wide range of inputs, giving you an extreme level of control over the intensity of transient sounds without the need to adjust complicated settings. The unique filters in the attack envelope allow the attack intensity to be reduced much farther than other transient plugins, to the point of totally silencing the note attack, if desired. EXPLANATION FOR READERS WHO HAVEN'T USED A TRANSIENT SHAPER BEFORE A transient shaper allows you to adjust the speed or intensity of note attacks, making them crispier and snappier, or softening them and reducing harsh click sounds. This is useful if you want to make a snare drum cut through the mix (increase attack) or to soften pick noise on a guitar (reduce attack). Additionally, it allows you to adjust the volume of the sustain (or release) part of a note, leaving the attack part mostly untouched. This is useful if you want to reduce room reverberation sound on drums, making them sound tighter. Usually what we call the "sustain" control actually adjusts the volume of all parts of the sound except for the attack, so in many cases it functions more like a release control than a sustain control, if we compare it to the controls with those names in an ADSR (Attack, Delay, Sustain, Release) envelope control on a synthesizer. WHAT UNIQUE THINGS DOES IT DO? - Adaptive filters handle wide variety of signals automatically without user input - Adaptive filters allow the attack adjustment to respond faster, allowing you to silence even the extreme earliest part of the note Note: except for the unusual ability to totally silence the attack, this plugin does basically the same thing that other transient plugins do. If you already have a transient shaper and you are happy with the way it sounds, this one will sound similar. So the only reasons to buy this are: - You don't have a transient shaper yet - You don't have the Blue Mangoo attack softener plugin yet - You do have a transient shaper but you would like one with simpler controls - You love collecting plugins

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

Transient Shaper4 screens
GSDSP Quantum Delay3 screens

Verdict

The call

The clearest difference is price: Transient Shaper at $5.99 against GSDSP Quantum Delay's $14.99. Transient Shaper also leads on rating (5.0 vs 4.8). GSDSP Quantum Delay's advantage is ratings volume (17 vs 2). On review sentiment, 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

Transient Shaper costs $5.99 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

Transient Shaper holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: GSDSP Quantum Delay has 17 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Scorecard3 real differences · 7 level
Transient Shaper versus GSDSP Quantum Delay: the parameters behind the verdict, then further details
ParameterTransient ShaperGSDSP Quantum Delay
Price$5.99 — better$14.99
Rating5.0 (2 ratings) — better4.8 (17 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings217 — better
Update frequency—Every 5 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size12 MB94 MB
Age rating4+4+
DeveloperBlue Mangoo Consulting Company LimitedGustav Scholda

Customer experience

Transient Shaper

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Transient Shaper

No in-app purchases

None

GSDSP Quantum Delay

No in-app purchases

Questions

Is Transient Shaper free?
Transient Shaper costs $5.99, 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, Transient Shaper or GSDSP Quantum Delay?
Transient Shaper is rated higher. Transient Shaper averages 5.0 out of 5 from 2 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.
Do Transient Shaper or GSDSP Quantum Delay have ads?
Neither Transient Shaper nor GSDSP Quantum Delay shows ads.

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