GSDSP MagicFusion vs TB Lowtone
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
TB Lowtone
This app is an innovative bass synthesizer and AUv3 plugin that uses loudness-domain harmonic synthesis for deeper, more consistent bass sounds. It features multiple oscillators, modulation options, and built-in effects, plus an AI randomizer for creating new patches.
- Loudness-domain harmonic synthesis
- 3 analog-simulated oscillators
- Voltage-controlled noise synthesizer
- AI randomizer for patch generation
- Extended LFOs and ADSR envelope
- Pro quality effects (reverb, chorus, delay)
- AUv3 plugin support
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TB Lowtone is an innovative bass synthesizer app and AUv3 plug-in featuring three analog-simulated, voltage-controlled oscillators with a large variety of waveform algorithms, continuous pulse-width modulation (PWM), Frequency Modulation (FM) and oscillator hard sync, complemented by a voltage-controlled noise synthesizer, parameter modulation a re-designed non-linear voltage controlled filter. TB Lowtone is the world's first bass synthesizer featuring loudness-domain harmonic synthesis, creating deeper, more consistent and production-ready bass sounds compared to conventional synthesizers operating in the (linear) amplitude domain. TB Lowtone also features an AI randomizer that generates new patches with a single click, and which learns from the patches you have already created to generate new, personalized patches! Loudness-domain synthesis Loudness perception of tones and harmonics is known to be highly non-linear and intricately frequency and level dependent. Equal loudness contours, or Fletcher-Munson curves demonstrate this drastic effect for sine tones, which is especially relevant for low frequencies. The loudness of a synthesizer bass note, and all its individual harmonics, will therefore depend strongly on what note you play on your synth's keyboard. To overcome the resulting inconsistencies in loudness and timbre, TB Lowtone features innovative, loudness-domain synthesis algorithms that adjust each harmonic individually to compensate for loudness deviations across frequency. Modulation and FX TB Lowtone provides two extended low-frequency oscillators (X-LFOs) featuring a wide range of waveforms. The LFOs can be beat and key synced, with a configurable onset delay and a specific number of cycles to run. In addition, a conventional ADSR envelope with configurable onset delay is provided. To top if all off, a gate editor designed to quickly put together modern production modulation patterns is available as well to modulate a range of VCO, VCN and VCF parameters. Reverb, chorus, and delay effects and a high-quality peak limiter are provided to produce production-ready sounds. Features: - 3 VCOs plus a VCN featuring a wide range of waveform algorithms - All VCOs support hard sync, pulse-width modulation (PWM) and frequency modulation (FM) - Lots of filter types for spectral shaping - 2 LFOs, one extra envelope and a gate editor for parameter modulation - Pro quality effects (reverb, chorus, delay, peak limiter) - Unique loudness domain synthesis algorithms - A smart randomiser that learns from your patches - AUv3 with resizable UI and dozens of color themes to choose from - Preset management including import and export options - Undo, redo, A/B switching What you should know: - Licenses acquired for this platform are not compatible with other platforms. - Audio Unit (AUv3) extensions require an iPad mini 2, iPad 4 or later models.
Screenshots
Verdict
The clearest difference is price: TB Lowtone at $9.99 against GSDSP MagicFusion's $29.99. TB Lowtone also leads on ratings volume (14 vs 4). GSDSP MagicFusion's advantage is rating (5.0 vs 4.4) and review sentiment (100% vs 85%). On ads, in-app purchases, monetization model and device support 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 TB Lowtone $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 14 respectively. Written reviews point the same way: 100% of GSDSP MagicFusion's written reviews are positive against 85% of TB Lowtone's.
GSDSP MagicFusion ships an update every 5 weeks, TB Lowtone every 3 months. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.
| Parameter | GSDSP MagicFusion | TB Lowtone |
|---|---|---|
| Price | $29.99 | $9.99 — better |
| Rating | 5.0 (4 ratings) — better | 4.4 (14 ratings) |
| Positive reviews | 100.0% of reviews — better | 84.6% of reviews |
| Number of ratings | 4 | 14 — better |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 68 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Gustav Scholda | ToneBoosters |
Customer experience
GSDSP MagicFusion
TB Lowtone
In-app purchases
GSDSP MagicFusion
No in-app purchases
TB Lowtone
No in-app purchases
Questions
Is GSDSP MagicFusion free?
Is TB Lowtone free?
Which has better reviews, GSDSP MagicFusion or TB Lowtone?
Do GSDSP MagicFusion or TB Lowtone have ads?
Which is updated more often, GSDSP MagicFusion or TB Lowtone?
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