# GSDSP Quantum Filter vs luapsel

The clearest difference is price: luapsel at $0.99 against GSDSP Quantum Filter's $14.99. luapsel also leads on update cadence (every 6 days vs every 5 weeks) and chart position (#189 vs unranked). GSDSP Quantum Filter's advantage is rating (5.0 vs 4.5). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

GSDSP Quantum Filter costs $14.99 and luapsel $0.99 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 4.5. Both are backed by a comparable volume of ratings — 3 and 4 respectively.

GSDSP Quantum Filter ships an update every 5 weeks, luapsel every 6 days. The most recent releases landed on September 22, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | GSDSP Quantum Filter | luapsel |
| --- | --- | --- |
| Price | $14.99 | **$0.99** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920/reviews)** | [4.5 (4 ratings)](https://appshunter.io/ios/app/luapsel/id6569224196/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 6 days** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#189** |
| Size | 77 MB | 101 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gustav Scholda](https://appshunter.io/developer/1642323227) | [OSC Audio](https://appshunter.io/developer/1693533681) |

## 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


### luapsel

[App page](https://appshunter.io/ios/app/luapsel/id6569224196)

**Currently charting:** #189 Top Paid · Music (US App Store)

Create calming electric guitar ambience with reversed samples and built-in effects. Offers polyphonic playback, multiple articulations, and real-time sound shaping tools for unique musical textures.

**Highlights:** Polyphonic reversed guitar sounds, Round Robin sampling, Multiple articulations, Built-in delay, reverb, chorus, Real-time low-pass filter, ADSR Release control, Standalone samples available

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GSDSP Quantum Filter free?

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

### Is luapsel free?

luapsel costs $0.99, with no in-app purchases.

### Which has better reviews, GSDSP Quantum Filter or luapsel?

GSDSP Quantum Filter is rated higher. GSDSP Quantum Filter averages 5.0 out of 5 from 3 ratings, while luapsel averages 4.5 from 4 ratings.

### Do GSDSP Quantum Filter or luapsel have ads?

Neither GSDSP Quantum Filter nor luapsel shows ads.

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

GSDSP Quantum Filter ships an update every 5 weeks, and luapsel every 6 days. Most recently, GSDSP Quantum Filter was updated on September 22, 2026 and luapsel on September 7, 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.*