Phaser Factory vs GSDSP Quantum Filter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Phaser Factory
Create custom phaser effects with this versatile audio plugin. Design unique sounds by adjusting stages, LFO, and feedback, and save your favorite presets. Developers can even export C++ code for their projects.
- Customizable phaser effects
- Adjustable number of stages (1-20)
- LFO width and offset control
- Feedback chain configuration
- Save and recall presets
- Export C++ class for developers
Read full descriptionHide full description
GSi Phaser Factory is a versatile phase shifter effect in the likes of some famous guitar pedals such as the Phase 90, the Small Stone, and stuff like that. With Phaser Factory you can create your own phaser and even try to "clone" an existing model. Select the number of phase shifting stages, from 1 up to 20! Set the LFO width and offset. Configure the feedback chain, the output mix and the summing stages. The algorithm is simple and efficient, once you get the perfect vibe, save your presets. And if you're a plugin developer, you can even export a C++ Class that you can use in your project to play the exact preset you've created in Phaser Factory. Phaser Factory is not only a phaser, it's all of them.
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.
- Analog-modelled filters
- 11 filter modes
- Series and parallel routing
- Dynamic modulation support
- Stereo and dual mono modes
- MIDI control integration
Read full descriptionHide 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
Screenshots
Verdict
The clearest difference is price: Phaser Factory at $6.99 against GSDSP Quantum Filter's $14.99. GSDSP Quantum Filter's advantage is update cadence (every 5 weeks vs every 39 months). 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
Phaser Factory costs $6.99 and GSDSP Quantum Filter $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Phaser Factory against 5.0 for GSDSP Quantum Filter. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Phaser Factory ships an update every 39 months, GSDSP Quantum Filter every 5 weeks. The most recent releases landed on August 26, 2026 and September 22, 2026 respectively.
| Parameter | Phaser Factory | GSDSP Quantum Filter |
|---|---|---|
| Price | $6.99 — better | $14.99 |
| Rating | 5.0 (4 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 — better | 3 |
| Update frequency | Every 39 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 7 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Genuine Soundware | Gustav Scholda |
Customer experience
Phaser Factory
GSDSP Quantum Filter
In-app purchases
Phaser Factory
No in-app purchases
GSDSP Quantum Filter
No in-app purchases
Questions
Is Phaser Factory free?
Is GSDSP Quantum Filter free?
Which has better reviews, Phaser Factory or GSDSP Quantum Filter?
Do Phaser Factory or GSDSP Quantum Filter have ads?
Which is updated more often, Phaser Factory or GSDSP Quantum Filter?
Other comparisons















