EG WaveSHAPER vs GSDSP Quantum Filter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EG WaveSHAPER
Create unique sounds by drawing waveforms or shaping built-in ones. Blend them with analog and sub oscillators, and automate parameters with drawable LFOs and envelopes. Explore a hybrid waveshaping and wavetable engine for complex sonic textures.
- Hybrid Wavetable/Waveshaping engine
- Draw custom wavetables
- Assignable LFOs and Envelopes
- Built-in Reverb, Delay, and EG Crush FX
- Core MIDI support
- AUv3 plugin compatibility
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EG WaveSHAPER is the first synthesizer that lets you create your sound with a finger. Draw the waveform on the screen or shape a builtin one, mix it with a classic analog oscillator and a sub oscillator and automate all the knobs with 2 drawable LFOs and 2 ENVs HYBRID WAVESHAPING ENGINE 'Waveshaping is a synthesis-and-transformation technique that turns simple sounds into complex sounds' 2 wavetables can be designed and morphed to create unique and dynamic sounds under your finger, choosing the morph attack and release; complex spectra can be created waveshaping the oscillator and introducing non linear distortion, rich harmonics and a tube-vacuum behaviour. The hybrid Waveshaping/Wavetable engine lets you combine a wavetable oscillator with a classic oscillator and a sub oscillator, to add additional sound layers and depth. LFOs & ENVs 2 Lfo and 2 Envelopes with indipendent time can be assigned to virtually any of the synth parameters. They can also be graphically designed with the touch of your finger or you can choose among the builtin envelopes. OTHER FEATURES - Hybrid Wavetable/Waveshaping engine - Draw your wavetable oscillator with your finger - 100+ presets (Pad, Lead, Bass and Fx) - 30+ builtin waveforms to use and modify - 2 LFOs and 2 ENVs assignable to any parameter - FX: Reverb, Delay and EG Crush - Detune osc to create huge unison sounds - FM and Noise with configurble FM Ratio and Noise eq - VCF and Reso filters - Complete presets management with export and share - Core MIDI: MIDI in, MIDI CC, MIDI channel pressure control - AU3 with full knobs parameters automation - Universal for iPad & iPhone
GSDSP Quantum Filter
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.
- Analog-modelled filters
- 11 filter modes
- Series and parallel routing
- Dynamic modulation support
- Stereo and dual mono modes
- MIDI control integration
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Analog warmth meets flexible routing and dynamic modulation in a filter workstation built for creative sound design. Analog-Modelled Filters Quantum Filter uses resonant, analog-modelled filter designs that behave smoothly and musically across the entire spectrum. With no cramping, stepping, or digital artefacts, the filters remain stable even under rapid modulation. At high resonance settings they can reach self-oscillation, similar to classic hardware circuits. Filter Types & Routing Choose from 11 filter modes, including Lowpass, Highpass, Bandpass, Notch, Shelving options, Bell, and Ladder Lowpass in 1–4 pole configurations. Combine filters in series (up to three stages) or parallel (up to two), resulting in over 2,000 possible routing combinations for detailed tone shaping and complex layered filtering. Built for Modulation Designed to handle fast, artefact-free modulation, Quantum Filter responds cleanly even under rapid parameter changes. Its stability makes it suitable for dynamic environments, rhythmic modulation, or complex movement across multiple filter stages. Stereo and Dual Mono Switch between stereo and dual mono modes to shape the stereo image. In dual mono mode, left and right channels can move independently, enabling asymmetric movement, wider imaging, or separate modulation paths for each side. MIDI Control Quantum Filter integrates ADSR & AR modulators that respond directly to MIDI, allowing envelope-driven filter motion that behaves like a synthesizer’s filter section. This integration adds expressive control for rhythmic gating, animated sweeps, and dynamic shaping based on your playing or sequencing. Quantum Filter 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
Screenshots
Verdict
The clearest difference is price: EG WaveSHAPER at $8.99 against GSDSP Quantum Filter's $14.99. EG WaveSHAPER also leads on update cadence (fortnightly vs every 5 weeks) and ratings volume (23 vs 3). GSDSP Quantum Filter's advantage is review sentiment (100% vs 85%) and rating (5.0 vs 4.8). 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
EG WaveSHAPER costs $8.99 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 4.8. That said, the two scores are not equally well evidenced: EG WaveSHAPER has 23 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 85% of EG WaveSHAPER's written reviews are positive against 100% of GSDSP Quantum Filter's.
EG WaveSHAPER ships an update fortnightly, GSDSP Quantum Filter every 5 weeks. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.
| Parameter | EG WaveSHAPER | GSDSP Quantum Filter |
|---|---|---|
| Price | $8.99 — better | $14.99 |
| Rating | 4.8 (23 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 84.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 23 — better | 3 |
| Update frequency | Fortnightly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.1 — better | 12.0 |
| Further details — not scored | ||
| Size | 25 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Elliott Garage | Gustav Scholda |
Customer experience
EG WaveSHAPER
GSDSP Quantum Filter
In-app purchases
EG WaveSHAPER
No in-app purchases
GSDSP Quantum Filter
No in-app purchases
Questions
Is EG WaveSHAPER free?
Is GSDSP Quantum Filter free?
Which has better reviews, EG WaveSHAPER or GSDSP Quantum Filter?
Do EG WaveSHAPER or GSDSP Quantum Filter have ads?
Which is updated more often, EG WaveSHAPER or GSDSP Quantum Filter?
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