Comparison

springVerb 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

springVerb

This app offers a wide range of vintage and modern spring reverb effects for music production. It features 14 distinct spring modes and extensive controls for deep sound customization, including EQ and automation. Presets can be saved and shared across platforms.

Highlights
  • 14 Spring Reverb Models
  • 16+ In-depth Controls
  • Built-in 3-band EQ
  • Preset Manager
  • Cross-platform Preset Sharing
  • Automation Control
Features
Read full description

Vintage Vibes, Timeless Reverberations Spring reverb has a long history, making its debut on organ sounds and rapidly gaining attention after being built into some of the most famous guitar amps known to man. In today's musical world, spring reverb is now pretty much used on anything that could use just a touch of ambience. Experience Spring in Full Spectrum with 14 Vibrant Spring Modes springVerb is packed with 14 spring modes to give you a wide range of spring sounds to take your sounds to the next level. Fully Customizable Sound for Any Situation Unlock the full sonic potential of each mode with in-depth controls; Mix, Dampening, Ducking, Left/Right Repeats and Decay. Their three band EQ Section (Low, Mid, and High), and master controls (Master Volume & Pan). Seamless Integration Across Platforms. All settings can be saved and loaded in your sessions as well as cross platform presets. All parameters offer automation control to get the most expressive sound. Features - 14 Spring Reverb Models; ranging from early/vintage styles to creatively inspiring and modern/futuristic - Over 16 In-depth controls to sculpt your reverbs, including: Pre Delay, Decay, Damping, Repeat Speed, Ducking, and more! - Built-in 3-band EQ section for additional sonic character control - Preset Manager with Save, Save As, Rename, and Delete functionality - Over 20 Factory presets, including both Send and Insert styles - Cross-platform support: presets can be shared between iOS and macOS & Windows

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

springVerb4 screens
GSDSP Quantum Delay3 screens

Verdict

The call

The clearest difference is review sentiment: GSDSP Quantum Delay at 100% against springVerb's 0%. GSDSP Quantum Delay also leads on rating (4.8 vs 4.3) and update cadence (every 5 weeks vs every 5 months). springVerb's advantage is price ($4.99 vs $14.99). 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

springVerb costs $4.99 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 4.3. Both are backed by a comparable volume of ratings — 6 and 17 respectively. Written reviews point the same way: 0% of springVerb's written reviews are positive against 100% of GSDSP Quantum Delay's.

UpkeepUpdate frequency

springVerb ships an update every 5 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
springVerb versus GSDSP Quantum Delay: the parameters behind the verdict, then further details
ParameterspringVerbGSDSP Quantum Delay
Price$4.99 — better$14.99
Rating4.3 (6 ratings)4.8 (17 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings617 — better
Update frequencyEvery 5 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size80 MB94 MB
Age rating4+4+
DeveloperOSC AudioGustav Scholda

Customer experience

springVerb

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

springVerb

No in-app purchases

None

GSDSP Quantum Delay

No in-app purchases

Questions

Is springVerb free?
springVerb costs $4.99, 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, springVerb or GSDSP Quantum Delay?
GSDSP Quantum Delay is rated higher. springVerb averages 4.3 out of 5 from 6 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.
Do springVerb or GSDSP Quantum Delay have ads?
Neither springVerb nor GSDSP Quantum Delay shows ads.
Which is updated more often, springVerb or GSDSP Quantum Delay?
springVerb ships an update every 5 months, and GSDSP Quantum Delay every 5 weeks. Most recently, springVerb was updated on September 23, 2026 and GSDSP Quantum Delay on September 22, 2026.

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