GSDSP MagicFusion vs VAPoly16
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GSDSP MagicFusion
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.
- Multi-curve spectral vocoding
- Frequency-domain processing
- Independent fusion amounts per frequency
- Dynamic response control
- Formant shifting
- AUv3 audio effect plugin
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The world’s first frequency-domain vocoder with multi-curve control and precision spectral fusion. Multi-Curve Spectral Vocoding MagicFusion is a multi-curve spectral vocoder workstation operating entirely in the frequency domain. Instead of relying on bandpass filters and envelope followers, it extracts the spectral characteristics of a modulator and applies them to a carrier, enabling precise, customizable vocoding across the entire spectrum. Apply independent fusion amounts per frequency or frequency range, then mix, modulate, and spread them to create anything from subtle vocal shading to extreme spectral transformations. Vocoder Signal Flow MagicFusion requires two audio inputs: the carrier (main input) and the modulator (sidechain). The plugin extracts the modulator’s spectral envelope and applies it to the carrier, creating a fused signal where both sources interact. This process provides clean, flexible control over the degree of spectral fusion and allows highly detailed shaping across the frequency spectrum. Dynamic Response & Formants Adjust the Smooth control to define how quickly the vocoder reacts, from fast, precise transitions to slower, more rounded movement. The Formant parameter shifts the spectral character of the modulator, while Detail adjusts the complexity of the filter response — from clean, intricate results to more organic, pumping behavior. MagicFusion is an AUv3 audio effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more. A Desktop version is also available for Windows and macOS (VST3 / AU / AAX). More information here: https://gs-dsp.com/products
VAPoly16
This app is a virtual analog polyphonic synthesizer for iOS and Mac. It offers 16 voices, a sequencer, and various audio effects. It can be used as a standalone application or as an AudioUnit Extension.
- 16 voice virtual analog synthesizer
- Bitimbral sound design
- Sequencer with piano roll and automation
- Multiple audio effects (delay, reverb, chorus, etc.)
- Standalone and AUv3 extension support
- Ableton Link and MIDI connectivity
- Audio file export
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VAPoly16 is a virtual analog bitimbral polyphonic synthesizer for iPhone, iPad and Mac. It features 16 voice synthesizer, effects, sequencer and audio visualization tools. It operates as a stand alone or as an AudioUnit Extension (AUv3). Stand Alone supports Ableton Link, MIDI and audio file export. The synthesizer consists of two 8 voice synthesizer, which features two oscillators, two ADSR envelopes, resonant high pass and low pass filter and an amplifier per voice. The oscillators features continuously variable wave shape and wide variety of modulation. The filters are modeled on the Sallen-Key filter circuit for classic analog sound. The Effects include delay, chorus, flanger, reverb, eq and compressor. The sequencer features piano roll and automation editor to program 16 bar pattern per clip. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. Main Features Virtual analog 16 voice bitimbral polyphonic synthesizer Sequencer 16 bar patterns per clip. Total 16 clips. Parameter automation. Audio Export Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Audio Unit Extension (AUv3) Works on iPhone, iPad and Mac. Support iCloud Drive. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. System Requirements For iOS Devices, A10 Fusion or above is recommended. AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension.
Screenshots
Verdict
The clearest difference is price: VAPoly16 at $14.99 against GSDSP MagicFusion's $29.99. VAPoly16 also leads on ratings volume (13 vs 4). GSDSP MagicFusion's advantage is iOS requirement (12.0 vs 16.4). On rating, review sentiment, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
GSDSP MagicFusion costs $29.99 and VAPoly16 $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 GSDSP MagicFusion against 5.0 for VAPoly16. Both are backed by a comparable volume of ratings — 4 and 13 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
GSDSP MagicFusion ships an update every 5 weeks, VAPoly16 every 2 months. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.
| Parameter | GSDSP MagicFusion | VAPoly16 |
|---|---|---|
| Price | $29.99 | $14.99 — better |
| Rating | 5.0 (4 ratings) | 5.0 (13 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 | 13 — better |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 68 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Gustav Scholda | Ryo Togawa |
Customer experience
GSDSP MagicFusion
VAPoly16
In-app purchases
GSDSP MagicFusion
No in-app purchases
VAPoly16
No in-app purchases








