Comparison

GSDSP Quantum Delay vs MuseBud

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

Head to head
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

About

MuseBud

This app generates musical notes based on user-defined probabilities for various musical parameters. It includes a looper for capturing and repeating sequences, with detailed editing capabilities for individual notes within the loop. It's a powerful tool for creating complex and evolving musical patterns.

Highlights
  • Generative note creation with customizable probabilities
  • Adjustable note, octave, duration, velocity, gate, and ratchet parameters
  • Integrated looper with up to 64-note buffer
  • Step editing within the looper
  • Multiple pattern support with independent looper buffers
  • Key and scale customization
Features
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MuseBud, a generative MIDI sequencer, creates notes based on the possibilities you define. Customize the chances for every aspect, including notes, octaves, note lengths, velocities, gate lengths, and ratchets. Each mode (note, octave, duration, velocity, gate, ratchet) features its own parameters. Utilize the faders on the main UI to set the likelihood of each parameter being selected by the engine. Easily exclude parameters by assigning them a 0% chance, ensuring they never occur. For quick adjustments, employ the draw mode, 'All 0%' and 'All 100%' buttons on the bottom toolbar. When you press the play button in the standalone app or the AUv3 host app, MuseBud continuously generates notes. The looper records up to 64 notes in its buffer, enabling you to loop back a preferred section in the sequence. Set the start point and step count of the looper in the buffer. Pressing play on the looper stops generating new notes and begins looping the selected section. When you stop the looper, MuseBud resumes generating new notes. Toggle the record button on the looper off to prevent recording new notes into the buffer. Edit steps in the looper by simply tapping the desired step to delete or edit, and choose an action from the popup menu. In the step editor, modify properties assigned by the engine, such as note, duration, octave, velocity, gate length, and ratchet count. Generate various patterns for multiple generative sequences. Each pattern comes with its own looper buffer. When creating a new pattern, it automatically duplicates the current one, ensuring you can craft multiple loops without losing your randomization settings. - In the note mode, you'll have "Rest" (no note) and all the notes in the scale you are working. You can change the key/scale in the settings menu as well as with the BrainBud app. - Octaves could be between -1 and +9. - A note duration could be as long as 4-bars long or 1/64th note long. - Adjust velocity between 0-127. Use the fader grouping button at the bottom to filter faders for faster assignments. - Gate length can range from 0% to 100%. The fader grouping button is also available in gate mode for streamlined adjustments. - Ratchets can be between 1 (no ratchets), 2, 3 or 4 repeats. For optimal results, fine-tune the possibilities and consider excluding a few parameters for added precision. MuseBud is a MIDI app and does not generate sound on its own. To hear its output, route MuseBud's MIDI output to your audio app's MIDI input. The AUv3 plugin app requires an AUv3 host app, such as AUM, Loopy Pro, Logic Pro, Cubasis, Nanostudio, apeMatrix, and more.

Screenshots

GSDSP Quantum Delay3 screens
MuseBud4 screens

Verdict

The call

The clearest difference is price: MuseBud at $3.99 against GSDSP Quantum Delay's $14.99. MuseBud also leads on update cadence (every 5 days vs every 5 weeks). On rating, review sentiment, ratings volume and ads 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

GSDSP Quantum Delay costs $14.99 and MuseBud $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for GSDSP Quantum Delay against 4.7 for MuseBud. Both are backed by a comparable volume of ratings — 17 and 12 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

GSDSP Quantum Delay ships an update every 5 weeks, MuseBud every 5 days. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 8 level
GSDSP Quantum Delay versus MuseBud: the parameters behind the verdict, then further details
ParameterGSDSP Quantum DelayMuseBud
Price$14.99$3.99 — better
Rating4.8 (17 ratings) — better4.7 (12 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings17 — better12
Update frequencyEvery 5 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size94 MB7 MB
Age rating4+4+
DeveloperGustav ScholdaCem Olcay

Customer experience

GSDSP Quantum Delay

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

MuseBud

All ratings12 ratings
Positive91.7%
Neutral0.0%
Negative8.3%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GSDSP Quantum Delay

No in-app purchases

None

MuseBud

No in-app purchases

Questions

Is GSDSP Quantum Delay free?
GSDSP Quantum Delay costs $14.99, with no in-app purchases.
Is MuseBud free?
MuseBud costs $3.99, with no in-app purchases.
Which has better reviews, GSDSP Quantum Delay or MuseBud?
GSDSP Quantum Delay is rated higher. GSDSP Quantum Delay averages 4.8 out of 5 from 17 ratings, while MuseBud averages 4.7 from 12 ratings.
Do GSDSP Quantum Delay or MuseBud have ads?
Neither GSDSP Quantum Delay nor MuseBud shows ads.
Which is updated more often, GSDSP Quantum Delay or MuseBud?
GSDSP Quantum Delay ships an update every 5 weeks, and MuseBud every 5 days. Most recently, GSDSP Quantum Delay was updated on September 22, 2026 and MuseBud on September 21, 2026.

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