VOSIS vs GSDSP MMM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VOSIS
This app transforms image data into sound, allowing for unique musical compositions and experimental sound design. It offers control over pitch, timbre, and envelopes to create shape-timbre relationships from visual input.
- Image sonification
- Visual music composition
- Experimental sound design
- Pixel luminance audification
- Shape-timbre relationships
- Adjustable pitch and timbre
- ADSR envelope control
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VOSIS is a synthesizer combining audification of greyscale pixel data with several image filters. It is a tool for image sonification, visual music composition, and experimental sound design. The audification of pixel luminance values creates shape-timbre relationships. Pixel scan rate is controlled in terms of note interval, octave, and scale to give varying pitch between image regions. The ADSR envelope allows one to play images as a non-linear sequence of pitches with varying wavetable/timbre. For more features including presets and unlimited recording see VOSIS Pro. Visit vosis.app for sound example, demo videos, and user guide!
GSDSP MMM
This app offers a robust MIDI modulation engine for controlling various instruments and plugins. It allows users to create dynamic audio with LFOs, random sources, and more, featuring a performance-focused interface for live use.
- MIDI CC control for plugins and hardware
- LFOs, random sources, and envelope followers
- Audio-based modulation capabilities
- Dedicated Performance Skin for live use
- AUv3 audio effect plugin
- Desktop versions for Windows and macOS
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A powerful MIDI modulation engine for controlling plugins, hardware, and instruments using LFOs, random sources, macros, and audio-based modulation. Modulate Everything MMM is a MIDI controller and modulation workstation designed to control any parameter that accepts MIDI CC — software instruments, plugins, external hardware, or any MIDI-capable device. Create modulation using LFOs, Random Generators, Envelope Followers, XY pads, and more. No more drawing of automation curves, keep your audio dynamic and exciting with ease. Perform Live MMM includes a dedicated Performance Skin designed for low-light and stage environments. It uses a restrained, red-accented color palette that preserves focus and minimizes visual distraction while performing. The interface remains clear and readable in dark settings, ensuring stable workflow during your live performance. MMM vs MMMm MMM includes audio input, enabling Envelope Followers, audio-reactive modulation, and audio output — ideal when used as an audio plugin. MMMm, by contrast, is a MIDI-only FX version for hosts such as Logic Pro or AUM that require a pure MIDI processor. Both versions support MIDI input and output and provide the same core modulators. MMM 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 So what are you waiting for?
Screenshots
Verdict
The clearest difference is rating: GSDSP MMM at 4.8 against VOSIS's 4.2. GSDSP MMM also leads on update cadence (every 6 weeks vs every 8 months) and ratings volume (34 vs 5). VOSIS's advantage is review sentiment (86% vs 75%). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GSDSP MMM holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: GSDSP MMM has 34 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 86% of VOSIS's written reviews are positive against 75% of GSDSP MMM's, so the app with the better star average is not the one people write more warmly about.
VOSIS ships an update every 8 months, GSDSP MMM every 6 weeks. The most recent releases landed on September 4, 2026 and August 21, 2026 respectively.
| Parameter | VOSIS | GSDSP MMM |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) | 4.8 (34 ratings) — better |
| Positive reviews | 85.7% of reviews — better | 75.0% of reviews |
| Number of ratings | 5 | 34 — better |
| Update frequency | Every 8 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Life Orange LLC | Gustav Scholda |
Customer experience
VOSIS
GSDSP MMM
In-app purchases
VOSIS
No in-app purchases
GSDSP MMM
No in-app purchases







