# JAX SR vs GSDSP Quantum Filter

The clearest difference is price: JAX SR at $6.99 against GSDSP Quantum Filter's $14.99. GSDSP Quantum Filter's advantage is ratings volume (3 vs 1) and iOS requirement (12.0 vs 14.0). On rating, update cadence, ads and in-app purchases there is nothing between them.

JAX SR 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 JAX SR against 5.0 for GSDSP Quantum Filter. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

JAX SR ships an update every 4 weeks, GSDSP Quantum Filter every 5 weeks. The most recent releases landed on June 25, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | JAX SR | GSDSP Quantum Filter |
| --- | --- | --- |
| Price | **$6.99** | $14.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/jax-sr-phaser/id1636821536/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 5 weeks |
| Monetization | Paid | Paid |
| Size | 21 MB | 77 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jens Guell](https://appshunter.io/developer/1195004865) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### JAX SR

[App page](https://appshunter.io/ios/app/jax-sr-phaser/id1636821536)

This audio effect app allows selective frequency range processing for modulation effects. It offers a classic phaser with MIDI control and dynamic mix adjustment, preventing negative side effects from full-range processing. It requires a host application to function.

**Highlights:** Selective frequency range processing, Classic phaser modulation, Optional MIDI control, Dynamic mix adjustment, Universal app for Apple devices

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is JAX SR free?

JAX SR costs $6.99, with no in-app purchases.

### Is GSDSP Quantum Filter free?

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

### Which has better reviews, JAX SR or GSDSP Quantum Filter?

JAX SR and GSDSP Quantum Filter are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do JAX SR or GSDSP Quantum Filter have ads?

Neither JAX SR nor GSDSP Quantum Filter shows ads.

### Which is updated more often, JAX SR or GSDSP Quantum Filter?

JAX SR ships an update every 4 weeks, and GSDSP Quantum Filter every 5 weeks. Most recently, JAX SR was updated on June 25, 2026 and GSDSP Quantum Filter on September 22, 2026.

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