Comparison

GSDSP Quantum Filter vs Absylon

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

Head to head
About

GSDSP Quantum Filter

This audio effect plugin offers analog-modeled filters with flexible routing and dynamic modulation for creative sound design. It provides extensive control over tone shaping and complex filtering with various filter types and configurations.

Highlights
  • Analog-modelled filters
  • 11 filter modes
  • Series and parallel routing
  • Dynamic modulation support
  • Stereo and dual mono modes
  • MIDI control integration
Features
Read full description

Analog warmth meets flexible routing and dynamic modulation in a filter workstation built for creative sound design. Analog-Modelled Filters Quantum Filter uses resonant, analog-modelled filter designs that behave smoothly and musically across the entire spectrum. With no cramping, stepping, or digital artefacts, the filters remain stable even under rapid modulation. At high resonance settings they can reach self-oscillation, similar to classic hardware circuits. Filter Types & Routing Choose from 11 filter modes, including Lowpass, Highpass, Bandpass, Notch, Shelving options, Bell, and Ladder Lowpass in 1–4 pole configurations. Combine filters in series (up to three stages) or parallel (up to two), resulting in over 2,000 possible routing combinations for detailed tone shaping and complex layered filtering. Built for Modulation Designed to handle fast, artefact-free modulation, Quantum Filter responds cleanly even under rapid parameter changes. Its stability makes it suitable for dynamic environments, rhythmic modulation, or complex movement across multiple filter stages. Stereo and Dual Mono Switch between stereo and dual mono modes to shape the stereo image. In dual mono mode, left and right channels can move independently, enabling asymmetric movement, wider imaging, or separate modulation paths for each side. MIDI Control Quantum Filter integrates ADSR & AR modulators that respond directly to MIDI, allowing envelope-driven filter motion that behaves like a synthesizer’s filter section. This integration adds expressive control for rhythmic gating, animated sweeps, and dynamic shaping based on your playing or sequencing. Quantum Filter 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

Absylon

This app provides an advanced guitar amplifier simulation specifically designed for extremely low tunings on 8-string guitars. It offers two distinct channels for rhythm and lead playing, along with features like custom IR loading and a built-in metronome.

Highlights
  • Low-tuning 8-string guitar amp simulation
  • Two channels: Savage (rhythm) and Beast (lead)
  • Custom Impulse Response (IR) loader
  • 4-knob tone stack
  • Grind Mode boost
  • Noise Gate
  • Built-in metronome and recorder
Features
Read full description

*Unleash the Apocalypse: Absylon by Aurora DSP Get ready to plunge into the depths of musical mayhem with Absylon, the latest plugin from Aurora DSP, designed specifically for guitarists who dare to dive into extremely low tunings. Created using a monstrous 200-watt guitar/bass amplifier, Absylon effortlessly handles the fundamental notes of E tuning on 8-string guitars, delivering a bone-crushing tone that will obliterate the very foundations of your sound. *A New Era of Guitar Tone Absylon isn't just another guitar sim; it's a revolution in tone. Say goodbye to the bass cut-off frequencies and hello to a clear, devastating low-end response. This is a different approach to guitar tone, crafted for the true metalhead who demands nothing but the heaviest, most brutal sound. *Two Channels of Pure Destruction Savage: Your go-to rhythm channel, designed to deliver earth-shattering riffs with relentless precision. Beast: For those blistering leads that cut through the mix like a chainsaw through flesh. *Features to Die For - Custom IR Loaders: Load your own Impulse Responses and craft your signature sound. - 4 Knobs Tone Stack: Sculpt your tone with precision and ease. - Grind Mode: Engage the boost and take your sound to the next level of brutality. - Noise Gate: Keep your tone tight and free of unwanted noise. - Built-In Metronome and Recorder: Perfect your riffs and capture your most ferocious creations on the fly. Prepare to descend into the abyss of tone with Absylon. Whether you're laying down savage rhythms or soaring through beastly leads, this plugin is your ticket to sonic annihilation. Are you ready to unleash the fury? Absylon by Aurora DSP – For Those Who Dare to Go Low. Standalone and AUv3

Screenshots

GSDSP Quantum Filter3 screens
Absylon3 screens

Verdict

The call

The clearest difference is rating: GSDSP Quantum Filter at 5.0 against Absylon's 4.3. GSDSP Quantum Filter also leads on review sentiment (100% vs 67%). Absylon's advantage is price ($6.99 vs $14.99) and ratings volume (9 vs 3). On ads, in-app purchases, monetization model and device support 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 Filter costs $14.99 and Absylon $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

GSDSP Quantum Filter holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 9 respectively. Written reviews point the same way: 100% of GSDSP Quantum Filter's written reviews are positive against 67% of Absylon's.

Scorecard4 real differences · 6 level
GSDSP Quantum Filter versus Absylon: the parameters behind the verdict, then further details
ParameterGSDSP Quantum FilterAbsylon
Price$14.99$6.99 — better
Rating5.0 (3 ratings) — better4.3 (9 ratings)
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings39 — better
Update frequencyEvery 5 weeks—
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size77 MB27 MB
Age rating4+4+
DeveloperGustav ScholdaAurora DSP

Customer experience

GSDSP Quantum Filter

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Absylon

All ratings9 ratings
Positive77.8%
Neutral11.1%
Negative11.1%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

None

GSDSP Quantum Filter

No in-app purchases

None

Absylon

No in-app purchases

Questions

Is GSDSP Quantum Filter free?
GSDSP Quantum Filter costs $14.99, with no in-app purchases.
Is Absylon free?
Absylon costs $6.99, with no in-app purchases.
Which has better reviews, GSDSP Quantum Filter or Absylon?
GSDSP Quantum Filter is rated higher. GSDSP Quantum Filter averages 5.0 out of 5 from 3 ratings, while Absylon averages 4.3 from 9 ratings.
Do GSDSP Quantum Filter or Absylon have ads?
Neither GSDSP Quantum Filter nor Absylon shows ads.

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