# Polybeep vs GSDSP Quantum Filter

The clearest difference is review sentiment: GSDSP Quantum Filter at 100% against Polybeep's 50%. GSDSP Quantum Filter also leads on rating (5.0 vs 4.7). Polybeep's advantage is price ($4.99 vs $14.99) and update cadence (fortnightly vs every 5 weeks). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Polybeep costs $4.99 and GSDSP Quantum Filter $14.99 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 4.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 50% of Polybeep's written reviews are positive against 100% of GSDSP Quantum Filter's.

Polybeep ships an update fortnightly, GSDSP Quantum Filter every 5 weeks. The most recent releases landed on August 30, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Polybeep | GSDSP Quantum Filter |
| --- | --- | --- |
| Price | **$4.99** | $14.99 |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/polybeep/id6471223455/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Paid | Paid |
| Size | 101 MB | 77 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Leonardo Demartino](https://appshunter.io/developer/1390797125) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### Polybeep

[App page](https://appshunter.io/ios/app/polybeep/id6471223455)

Create unique music with a polyrhythmic sound machine. Record or load samples, arrange them into looping shapes, and apply various effects. MIDI input is supported, and songs can be exported as WAV files.

**Highlights:** Polyrhythmic sound generation, Record microphone audio, Load sample files, Looping shape arrangement, Extensive audio effects, MIDI input support, Export to WAV

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

**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 Polybeep free?

Polybeep costs $4.99, 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, Polybeep or GSDSP Quantum Filter?

GSDSP Quantum Filter is rated higher. Polybeep averages 4.7 out of 5 from 3 ratings, while GSDSP Quantum Filter averages 5.0 from 3 ratings.

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

Neither Polybeep nor GSDSP Quantum Filter shows ads.

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

Polybeep ships an update fortnightly, and GSDSP Quantum Filter every 5 weeks. Most recently, Polybeep was updated on August 30, 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.*