# GSDSP Quantum Filter vs JAX ONE XModulator Extended

The clearest difference is review sentiment: GSDSP Quantum Filter at 100% against JAX ONE XModulator Extended's 50%. GSDSP Quantum Filter also leads on rating (5.0 vs 4.0) and iOS requirement (12.0 vs 14.0). JAX ONE XModulator Extended's advantage is update cadence (every 4 days vs every 5 weeks) and price ($12.99 vs $14.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

GSDSP Quantum Filter costs $14.99 and JAX ONE XModulator Extended $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GSDSP Quantum Filter holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 100% of GSDSP Quantum Filter's written reviews are positive against 50% of JAX ONE XModulator Extended's.

GSDSP Quantum Filter ships an update every 5 weeks, JAX ONE XModulator Extended every 4 days. The most recent releases landed on September 22, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | GSDSP Quantum Filter | JAX ONE XModulator Extended |
| --- | --- | --- |
| Price | $14.99 | **$12.99** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/jax-one-xmodulator-extended/id6505114652/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | Paid | Paid |
| Size | 77 MB | 32 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gustav Scholda](https://appshunter.io/developer/1642323227) | [Jens Guell](https://appshunter.io/developer/1195004865) |

## What reviewers say

### GSDSP Quantum Filter

[App page](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920)

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:** Vision Pro support

**In-app purchases:** none


### JAX ONE XModulator Extended

[App page](https://appshunter.io/ios/app/jax-one-xmodulator-extended/id6505114652)

This app offers a classic ring modulator effect with an analog-modeled unison oscillator for sound modulation and sonic refinement. It functions as a creative sound design tool and special effect processor with a unique 3D modular rack interface.

**Highlights:** Analog modeled ring modulator, Unison oscillator modulation source, Creative sound design tool, Special effect processor, 3D modular rack user interface, AUv3 app extension

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GSDSP Quantum Filter free?

GSDSP Quantum Filter costs $14.99, with no in-app purchases.

### Is JAX ONE XModulator Extended free?

JAX ONE XModulator Extended costs $12.99, with no in-app purchases.

### Which has better reviews, GSDSP Quantum Filter or JAX ONE XModulator Extended?

GSDSP Quantum Filter is rated higher. GSDSP Quantum Filter averages 5.0 out of 5 from 3 ratings, while JAX ONE XModulator Extended averages 4.0 from 2 ratings.

### Do GSDSP Quantum Filter or JAX ONE XModulator Extended have ads?

Neither GSDSP Quantum Filter nor JAX ONE XModulator Extended shows ads.

### Which is updated more often, GSDSP Quantum Filter or JAX ONE XModulator Extended?

GSDSP Quantum Filter ships an update every 5 weeks, and JAX ONE XModulator Extended every 4 days. Most recently, GSDSP Quantum Filter was updated on September 22, 2026 and JAX ONE XModulator Extended on September 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*