Comparison

TimeVerb 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

TimeVerb

This audio plugin combines a classic spring reverb emulation with a new digital reverb. It offers extensive control over both effects, allowing for parallel or series processing to create unique sonic textures and atmospheres.

Highlights
  • Spring reverb "Type 4" with feedback and stereo
  • Digital reverb with pre-delay and room size
  • Parallel and series effect processing
  • Unlimited program storage
  • 16 factory presets included
  • AUv3 extension support
Features
Read full description

Please note: this is an AUv3 plugin that can be used with compatible host Apps. TimeVerb-X is a new plugin from GSi that combines GSi's “classic” Type4 spring reverb, first released in 2008, and a new algorithmic digital reverb. The “Type4” spring reverb emulation was originally inspired by an Accutronics reverb tank type 4, like those used in classic Hammond organs of the A100 series, also used in many famous electric guitar amplifiers. The digital reverb, instead, was first developed for the GSi Gemini sound module, but was also included in some Crumar hardware instruments. Both effects have been slightly expanded and further improved for the release of TimeVerb-X, as the spring reverb now features a self-oscillating feedback decay adjustment and a stereo width knob, and the digital reverb includes the early reflections section that was missing in the original project. Both reverbs put together make up a great sound when working in parallel, and create some interesting atmospheres when working in series. TimeVerb-X main features: - Spring reverb "Type 4" with feedback and stereo operation - Digital reverb with pre-delay, early reflections and room size adjustment - Built-in programmer with unlimited number of Programs (comes with 16 factory Programs) - Integrated user's manual - Comes with AUv3 extension

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

TimeVerb1 screens
GSDSP Quantum Delay3 screens

Verdict

The call

The clearest difference is update cadence: GSDSP Quantum Delay at every 5 weeks against TimeVerb's every 17 months. GSDSP Quantum Delay also leads on ratings volume (17 vs 4). TimeVerb's advantage is rating (5.0 vs 4.8). On price, review sentiment, ads and in-app purchases 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

TimeVerb costs $14.99 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

TimeVerb holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 17 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

TimeVerb ships an update every 17 months, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 7 level
TimeVerb versus GSDSP Quantum Delay: the parameters behind the verdict, then further details
ParameterTimeVerbGSDSP Quantum Delay
Price$14.99$14.99
Rating5.0 (4 ratings) — better4.8 (17 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings417 — better
Update frequencyEvery 17 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size9 MB94 MB
Age rating4+4+
DeveloperGenuine SoundwareGustav Scholda

Customer experience

TimeVerb

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

TimeVerb

No in-app purchases

None

GSDSP Quantum Delay

No in-app purchases

Questions

Is TimeVerb free?
TimeVerb costs $14.99, 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, TimeVerb or GSDSP Quantum Delay?
TimeVerb is rated higher. TimeVerb averages 5.0 out of 5 from 4 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.
Do TimeVerb or GSDSP Quantum Delay have ads?
Neither TimeVerb nor GSDSP Quantum Delay shows ads.
Which is updated more often, TimeVerb or GSDSP Quantum Delay?
TimeVerb ships an update every 17 months, and GSDSP Quantum Delay every 5 weeks. Most recently, TimeVerb was updated on October 13, 2026 and GSDSP Quantum Delay on October 9, 2026.

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