Comparison

Knob Lab 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

Knob Lab

This application transforms your iOS device into a versatile MIDI controller. It allows you to manage various DAWs and music software remotely via USB, WiFi, or Bluetooth. Create intricate control setups with a single rotary knob, affecting multiple MIDI destinations simultaneously.

Highlights
  • Remote DAW control
  • USB, WiFi, Bluetooth connectivity
  • Virtual MIDI support
  • Audiobus integration
  • Complex control mapping
  • iPad support
  • MIDI logger
Features
Read full description

Knob Lab turns your iPhone or iPad into a MIDI controller built around one idea: a single knob can do many things at once. ONE KNOB. MANY MOVES. Map a knob to up to 8 MIDI destinations. Each has its own range, direction, channel and color, so one turn can open a filter, pull the resonance back and bring the delay in over the second half of the sweep. BUILD YOUR OWN MACROS • Control Change, Program Change and Pitch Bend destinations • Name every knob and every destination, so a setup reads at a glance • Invert any range, or start a destination part-way through the turn • Rotate completely, snap to middle, pan left/right, or return to origin on release • A colored lane for every destination shows where each one is A LAYOUT FOR EVERY SETUP Start with one big knob, or unlock layouts with 2, 6 or 12 knobs on a single screen. PLAYS WITH EVERYTHING • Music apps on the same device, through Knob Lab's virtual MIDI output • Computers over Wi-Fi, with a network MIDI session • A Mac over USB or Bluetooth, with Sonic Logic Central • Class-compliant USB MIDI interfaces and synths plugged into your iPhone or iPad MADE FOR TOUCH Large, precise knobs, a quick guided start, Dark, Light and Neon themes, and full support for iPhone Duo in portrait and landscape. The one-knob layout is free. The 2, 6 and 12 knob layouts are in-app purchases, available one at a time or all together.

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

Knob Lab4 screens
GSDSP MMM4 screens

Verdict

The call

The clearest difference is in-app purchases: GSDSP MMM at none against Knob Lab's 4. GSDSP MMM also leads on rating (4.7 vs 4.3) and update cadence (every 5 weeks vs every 4 months). Knob Lab's advantage is review sentiment (85% vs 67%). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Knob Lab sells 4 one-off in-app purchases. GSDSP MMM asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

GSDSP MMM holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 12 and 36 respectively. Written reviews complicate that: 85% of Knob Lab's written reviews are positive against 67% of GSDSP MMM's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Knob Lab ships an update every 4 months, GSDSP MMM every 5 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard7 real differences · 3 level
Knob Lab versus GSDSP MMM: the parameters behind the verdict, then further details
ParameterKnob LabGSDSP MMM
PriceFreeFree
Rating4.3 (12 ratings)4.7 (36 ratings) — better
Positive reviews84.6% of reviews — better66.7% of reviews
Number of ratings1236 — better
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size66 MB65 MB
Age rating4+4+
DeveloperUri NachmiasGustav Scholda

Customer experience

Knob Lab

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews13 reviews
Positive84.6%
Neutral0.0%
Negative15.4%

GSDSP MMM

All ratings36 ratings
Positive94.4%
Neutral0.0%
Negative5.6%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

4 purchases

Knob Lab

One-time4
  • Two Knob Layout$0.99
  • Four/Six Knob Layout$0.99
  • Nine/Twelve knob layout.$0.99
Show 1 more
  • Unlock all layouts$1.99
None

GSDSP MMM

No in-app purchases

Questions

Is Knob Lab free?
Knob Lab is free to download, with in-app purchases available.
Is GSDSP MMM free?
GSDSP MMM is free to download, with no in-app purchases.
Which has better reviews, Knob Lab or GSDSP MMM?
GSDSP MMM is rated higher. Knob Lab averages 4.3 out of 5 from 12 ratings, while GSDSP MMM averages 4.7 from 36 ratings.
Do Knob Lab or GSDSP MMM have ads?
Neither Knob Lab nor GSDSP MMM shows ads.
Which is updated more often, Knob Lab or GSDSP MMM?
Knob Lab ships an update every 4 months, and GSDSP MMM every 5 weeks. Most recently, Knob Lab was updated on October 24, 2026 and GSDSP MMM on October 27, 2026.

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