Comparison

StreamByter vs GSDSP MMM

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

StreamByter

Create custom MIDI effects with or without a graphical interface. This plugin extends MIDI processing for AU hosts or can be used standalone with CoreMIDI. It offers advanced programming concepts for complex MIDI manipulation.

Highlights
  • Custom MIDI effect creation
  • AU effect or standalone CoreMIDI use
  • Remap, filter, clone, and delay MIDI events
  • Conditional logic and loops for complex effects
  • Bi-directional linking with graphical sliders
  • Textual rules language for configuration
Features
Read full description

StreamByter is a plugin for creating custom MIDI effects with or without a GUI. It can be used as an Apple Audio Unit (AU) effect or as a standalone app connected via CoreMIDI virtual ports. StreamByter is ported from our acclaimed MidiFire MIDI processing environment. An iOS device (minimum iOS 11) and a suitable AU host app such as AUM, apeMatrix, Cubasis or Sequencism is required to use the AU variant. To use with CoreMIDI, a routing app like MidiFire is recommended and an iOS device with at least iOS 8 is required. Use StreamByter to: - Extend the MIDI processing functionality of any AU host. - Remap channels, notes, controllers (anything MIDI) - Filter MIDI events coarsely or finely - Clone or Delay any event - Send any event automatically when plugin is loaded - Create complex effects using programming concepts like conditionals, loops, variables (including array, timing and random), and math operators. - Link effect logic bi-directionally with graphical sliders (remote controllable via AU parameters) StreamByter is configured using a textual rules 'language' that defines how the effect should operate. Please see the support link to go to our website for full details. StreamByter is built using the MidiBus library - http://midib.us

About

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.

Highlights
  • 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
Features
Read full description

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

StreamByter2 screens
GSDSP MMM4 screens

Verdict

The call

StreamByter and GSDSP MMM both sit at 4.9 stars, but that hides the real split: 91% of StreamByter's written reviews are positive against 75% of GSDSP MMM's. GSDSP MMM's advantage is update cadence (every 6 weeks vs every 3 months) and iOS requirement (12.0 vs 14.5). On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for StreamByter against 4.8 for GSDSP MMM. Both are backed by a comparable volume of ratings — 27 and 34 respectively. Written reviews are what separate them: 91% of StreamByter's written reviews are positive against 75% of GSDSP MMM's.

UpkeepUpdate frequency

StreamByter ships an update every 3 months, GSDSP MMM every 6 weeks. The most recent releases landed on October 9, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
StreamByter versus GSDSP MMM: the parameters behind the verdict, then further details
ParameterStreamByterGSDSP MMM
PriceFreeFree
Rating4.9 (27 ratings) — better4.8 (34 ratings)
Positive reviews90.9% of reviews — better75.0% of reviews
Number of ratings2734 — better
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.512.0 — better
Further details — not scored
Size7 MB65 MB
Age rating4+4+
DeveloperAudeonic AppsGustav Scholda

Customer experience

StreamByter

All ratings27 ratings
Positive96.3%
Neutral3.7%
Negative0.0%
Written reviews11 reviews
Positive90.9%
Neutral9.1%
Negative0.0%

GSDSP MMM

All ratings31 ratings
Positive96.8%
Neutral0.0%
Negative3.2%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

StreamByter

No in-app purchases

None

GSDSP MMM

No in-app purchases

Questions

Is StreamByter free?
StreamByter is free to download, with no in-app purchases.
Is GSDSP MMM free?
GSDSP MMM is free to download, with no in-app purchases.
Which has better reviews, StreamByter or GSDSP MMM?
StreamByter is rated higher. StreamByter averages 4.9 out of 5 from 27 ratings, while GSDSP MMM averages 4.8 from 34 ratings.
Do StreamByter or GSDSP MMM have ads?
Neither StreamByter nor GSDSP MMM shows ads.
Which is updated more often, StreamByter or GSDSP MMM?
StreamByter ships an update every 3 months, and GSDSP MMM every 6 weeks. Most recently, StreamByter was updated on October 9, 2026 and GSDSP MMM on September 17, 2026.

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