Comparison

Transit 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

Transit

Create dynamic audio transitions for music production. This plugin offers a multi-FX system with 18 effect modules and a motion sequencer for building excitement and adding ear candy to your mixes. Ideal for build-ups, drops, risers, and sweeps.

Highlights
  • Multi-FX plugin
  • 18 effect modules
  • Macro Control automation
  • Motion Sequencer
  • DAW-sync'ed transitions
  • Live performance mode
  • Build-ups, drops, risers, sweeps
Read full description

This plugin kills static mixes! We teamed up with Andrew Huang to create Transit: A multi-FX plugin that’ll give your mix transitions super powers. Use it for build-ups, drops, motion effects, risers and sweeps – and keep your listeners constantly engaged. An Easier Way To Create Better Transitions: Transit hosts 18 powerful effect-modules, freely loadable across 7 slots. All effect parameters can be linked to a global Macro Control, which you automate to create complex FX transitions with one knob movement. A Creative Playground: The 18 effect modules in Transit are purpose-designed for transition duties. You get classic modulation effects, distortion and degradation options, motion FX, reverb, delay, two filter types – and even a synth oscillator and noise generator for adding risers and sweeps to your transitions. The Motion Sequencer: Switch from Macro Mode to Sequencer Mode to program and trigger DAW-sync’ed transitions with the click of a button. Each transition will start exactly at the next bar. This is ideal for live use. Or for writing perfectly timed automations into your mix session without entering the automation lanes. What's new in the iOS version: * Play View: A view that lets you trigger and control transitions without the visual clutter. * Ability to zoom in on individual modules for increased precision. * Easy-export your desktop presets to iOS by hitting the "E" key in your desktop version (v1.2 or later) and following the instructions. TL;DR * The ultimate plugin for creating complex, hand-raising, and jaw-dropping FX transitions with one knob movement * Perfect for building excitement between song parts and adding little moments of ear candy to your productions * Can be controlled with a single Macro Knob or a Motion Sequencer that triggers DAW-sync’ed automations at the click of a button * Engage “Sequencer Loop” mode to use Transit as an LFO tool for constant FX movements across entire tracks * A creative playground, suitable for both studio and live use

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

Transit4 screens
GSDSP Quantum Delay3 screens

Verdict

The call

The clearest difference is review sentiment: GSDSP Quantum Delay at 100% against Transit's 55%. GSDSP Quantum Delay also leads on price ($14.99 vs $29.99) and rating (4.8 vs 3.8). 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

Transit costs $29.99 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 3.8. Both are backed by a comparable volume of ratings — 19 and 17 respectively. Written reviews point the same way: 55% of Transit's written reviews are positive against 100% of GSDSP Quantum Delay's.

UpkeepUpdate frequency

Transit ships an update every 9 months, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on September 19, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
Transit versus GSDSP Quantum Delay: the parameters behind the verdict, then further details
ParameterTransitGSDSP Quantum Delay
Price$29.99$14.99 — better
Rating3.8 (19 ratings)4.8 (17 ratings) — better
Positive reviews54.5% of reviews100.0% of reviews — better
Number of ratings19 — better17
Update frequencyEvery 9 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size89 MB94 MB
Age rating4+4+
DeveloperBaby Audio Inc.Gustav Scholda

Customer experience

Transit

All ratings19 ratings
Positive68.4%
Neutral5.3%
Negative26.3%
Written reviews22 reviews
Positive54.5%
Neutral4.5%
Negative40.9%

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

Transit

No in-app purchases

None

GSDSP Quantum Delay

No in-app purchases

Questions

Is Transit free?
Transit costs $29.99, 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, Transit or GSDSP Quantum Delay?
GSDSP Quantum Delay is rated higher. Transit averages 3.8 out of 5 from 19 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.
Do Transit or GSDSP Quantum Delay have ads?
Neither Transit nor GSDSP Quantum Delay shows ads.
Which is updated more often, Transit or GSDSP Quantum Delay?
Transit ships an update every 9 months, and GSDSP Quantum Delay every 5 weeks. Most recently, Transit was updated on September 19, 2026 and GSDSP Quantum Delay on September 22, 2026.

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