Comparison

BLEASS Arpeggiator 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

BLEASS Arpeggiator

This app offers advanced arpeggiation capabilities for musicians, going beyond traditional patterns with polyrhythms and polyphony. Its intuitive interface encourages on-the-fly experimentation, enhanced by performance controllers, LFOs, and a motion sequencer. It also includes a built-in FM synth for sound generation or can be used with other instruments.

Highlights
  • Advanced arpeggiation patterns
  • Polyphony and polyrhythms
  • Hands-on creative interface
  • XY pads and LFOs
  • Motion Sequencer
  • Built-in FM synth
  • MIDI output for external synths
Read full description

A new and unique Arpeggiator by BLEASS & Canblaster. Use it as a MIDI FX to control any synth or as an AUv3 Instrument thanks to its built-in FM Synth! BLEASS Arpeggiator takes the inspirationally melodic power of a classic synth arpeggiator and supercharges it with modern features demanded by today’s musicians. Developed in collaboration with top French producer Canblaster, BLEASS Arpeggiator’s capabilities extend far beyond the clichéd up-and-down monophonic patterns of an old-school synth arpeggiator, with polyrhythms, polyphony, and a large collection of highly configurable arpeggio patterns built in. The focus of BLEASS Arpeggiator is creativity and experimentation. The plugin’s hands-on user interface is as intuitive and spontaneous to use as a classic subtractive synth, so varying and adapting arpeggios on-the-fly is an easy, fun and organic experience. The plugin recognises incoming performance controllers, and includes a pair of XY pads, a pair of advanced LFOs and BLEASS’ signature Motion Sequencer. These can modulate the arpeggiator’s parameters, unlocking a deep level of creativity that is simply not available from modern step-sequencer-style arpeggiators. BLEASS Arpeggiator also offers a built-in sound generator. This is a cut-down yet great-sounding FM synth that’s perfect for creating bright, sweet and punchy sounds that can work well with an arpeggio line. You can of course use BLEASS Arpeggiator with any other synth too, with each instance of the plugin creating its own MIDI source that can be routed to any instrument within your project. More information, technical specifications and tutorials available on https://www.bleass.com/arpeggiator BLEASS Arpeggiator is available as an AUv3 plugin or standalone App. BLEASS Arpeggiator is also available for Windows, and macOS.

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

BLEASS Arpeggiator4 screens
GSDSP Quantum Delay3 screens

Verdict

The call

BLEASS Arpeggiator and GSDSP Quantum Delay both sit at 4.8 stars, but that hides the real split: 100% of GSDSP Quantum Delay's written reviews are positive against 75% of BLEASS Arpeggiator's. GSDSP Quantum Delay also leads on update cadence (every 5 weeks vs every 6 months) and iOS requirement (12.0 vs 15.6). BLEASS Arpeggiator's advantage is ratings volume (54 vs 17). On price, rating, 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

BLEASS Arpeggiator 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

On the App Store both sit at effectively the same score — 4.8 for BLEASS Arpeggiator against 4.8 for GSDSP Quantum Delay. Both are backed by a comparable volume of ratings — 54 and 17 respectively. Written reviews are what separate them: 75% of BLEASS Arpeggiator's written reviews are positive against 100% of GSDSP Quantum Delay's.

UpkeepUpdate frequency

BLEASS Arpeggiator ships an update every 6 months, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
BLEASS Arpeggiator versus GSDSP Quantum Delay: the parameters behind the verdict, then further details
ParameterBLEASS ArpeggiatorGSDSP Quantum Delay
Price$14.99$14.99
Rating4.8 (54 ratings)4.8 (17 ratings)
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings54 — better17
Update frequencyEvery 6 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size20 MB94 MB
Age rating4+4+
DeveloperBLEASSGustav Scholda

Customer experience

BLEASS Arpeggiator

All ratings54 ratings
Positive96.3%
Neutral0.0%
Negative3.7%
Written reviews12 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

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

BLEASS Arpeggiator

No in-app purchases

None

GSDSP Quantum Delay

No in-app purchases

Questions

Is BLEASS Arpeggiator free?
BLEASS Arpeggiator 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, BLEASS Arpeggiator or GSDSP Quantum Delay?
BLEASS Arpeggiator and GSDSP Quantum Delay are both rated 4.8 out of 5 on the App Store, from 54 and 17 ratings respectively.
Do BLEASS Arpeggiator or GSDSP Quantum Delay have ads?
Neither BLEASS Arpeggiator nor GSDSP Quantum Delay shows ads.
Which is updated more often, BLEASS Arpeggiator or GSDSP Quantum Delay?
BLEASS Arpeggiator ships an update every 6 months, and GSDSP Quantum Delay every 5 weeks. Most recently, BLEASS Arpeggiator was updated on September 20, 2026 and GSDSP Quantum Delay on September 22, 2026.

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