# GSDSP MagicFusion vs sumFX

The clearest difference is review sentiment: GSDSP MagicFusion at 100% against sumFX's 55%. GSDSP MagicFusion also leads on rating (5.0 vs 4.4) and update cadence (every 5 weeks vs every 6 months). sumFX's advantage is price ($9.99 vs $29.99) and ratings volume (12 vs 4). On ads, in-app purchases, monetization model and device support there is nothing between them.

GSDSP MagicFusion costs $29.99 and sumFX $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GSDSP MagicFusion holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 4 and 12 respectively. Written reviews point the same way: 100% of GSDSP MagicFusion's written reviews are positive against 55% of sumFX's.

GSDSP MagicFusion ships an update every 5 weeks, sumFX every 6 months. The most recent releases landed on September 22, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | GSDSP MagicFusion | sumFX |
| --- | --- | --- |
| Price | $29.99 | **$9.99** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/gsdsp-magicfusion/id6446889003/reviews)** | [4.4 (12 ratings)](https://appshunter.io/ios/app/sumfx/id6450494474/reviews) |
| Number of ratings | 4 | **12** |
| Positive reviews | **100.0% of reviews** | 54.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Monetization | Paid | Paid |
| Size | 68 MB | 44 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 MagicFusion

[App page](https://appshunter.io/ios/app/gsdsp-magicfusion/id6446889003)

This advanced audio effect plugin offers precise spectral fusion and multi-curve vocoding. It allows users to extract spectral characteristics from one audio source and apply them to another, enabling detailed transformations from subtle shading to extreme effects.

**Highlights:** Multi-curve spectral vocoding, Frequency-domain processing, Independent fusion amounts per frequency, Dynamic response control, Formant shifting, AUv3 audio effect plugin

**Features:** Vision Pro support

**In-app purchases:** none


### sumFX

[App page](https://appshunter.io/ios/app/sumfx/id6450494474)

This app is a versatile audio effects processor for musicians. It offers a modular design with multiple high-quality FX modules and customizable slots, allowing for quick creation of unique sounds. Focus on your music with intuitive controls and visual feedback.

**Highlights:** Modular multi-FX processor, 8 high-quality FX modules, 8 FX slots with Wet/Dry control, 2 LFOs per slot, 50+ cross-platform presets, Pre/post waveform view

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

**In-app purchases:** none


## Frequently asked questions

### Is GSDSP MagicFusion free?

GSDSP MagicFusion costs $29.99, with no in-app purchases.

### Is sumFX free?

sumFX costs $9.99, with no in-app purchases.

### Which has better reviews, GSDSP MagicFusion or sumFX?

GSDSP MagicFusion is rated higher. GSDSP MagicFusion averages 5.0 out of 5 from 4 ratings, while sumFX averages 4.4 from 12 ratings.

### Do GSDSP MagicFusion or sumFX have ads?

Neither GSDSP MagicFusion nor sumFX shows ads.

### Which is updated more often, GSDSP MagicFusion or sumFX?

GSDSP MagicFusion ships an update every 5 weeks, and sumFX every 6 months. Most recently, GSDSP MagicFusion was updated on September 22, 2026 and sumFX 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.*