# Compás Builder vs GSDSP Quantum Filter

The clearest difference is price: GSDSP Quantum Filter at $14.99 against Compás Builder's $24.99. GSDSP Quantum Filter also leads on in-app purchases (none vs 3) and review sentiment (100% vs 67%). On rating, update cadence, ads and monetization model there is nothing between them.

Compás Builder costs $24.99 and GSDSP Quantum Filter $14.99 up front. Compás Builder sells 3 one-off in-app purchases. GSDSP Quantum Filter asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Compás Builder against 5.0 for GSDSP Quantum Filter. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews are what separate them: 67% of Compás Builder's written reviews are positive against 100% of GSDSP Quantum Filter's.

Compás Builder ships an update every 2 months, GSDSP Quantum Filter every 5 weeks. The most recent releases landed on September 30, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Compás Builder | GSDSP Quantum Filter |
| --- | --- | --- |
| Price | $24.99 | **$14.99** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/compas-builder/id719081359/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 22 MB | 77 MB |
| Requires iOS | 13.4 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Herbert Dapper](https://appshunter.io/developer/719081362) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### Compás Builder

[App page](https://appshunter.io/ios/app/compas-builder/id719081359)

This app provides a professional metronome and guitar tuner specifically designed for flamenco musicians. It allows users to create custom accompaniments for guitar, dancing, and singing performances with high-fidelity sound.

**Highlights:** Flamenco compás player, Enhanced metronome, Guitar tuner, Custom accompaniment creation, HiFi audio quality

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Compás Builder playing version | $8.99 | one-time |
| Compás Builder upgrade | $17.99 | one-time |
| Compás Builder full version | $26.99 | one-time |


### 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 Compás Builder free?

Compás Builder costs $24.99, and also offers in-app purchases.

### Is GSDSP Quantum Filter free?

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

### Which has better reviews, Compás Builder or GSDSP Quantum Filter?

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

### Do Compás Builder or GSDSP Quantum Filter have ads?

Neither Compás Builder nor GSDSP Quantum Filter shows ads.

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

Compás Builder ships an update every 2 months, and GSDSP Quantum Filter every 5 weeks. Most recently, Compás Builder was updated on September 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.*