Comparison

Motion Synth 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

Motion Synth

This app turns your iPhone or iPod touch into a musical instrument. Play notes with touch and control sound with motion. It can be used standalone, with other iOS music apps, or even external hardware and laptop software.

Highlights
  • Play notes via touch
  • Shape sound through motion
  • Control in-app sounds
  • Control other iOS music apps
  • Control external hardware synths
  • Control laptop audio/visual software
Features
Read full description

Music through motion: The AUUG Motion Synth transforms your iPhone or iPod touch into an expressive musical instrument that lets you play notes via touch and shape their sound through motion. Visit http://www.auug.com to see a demonstration video. Available here is the free version of the AUUG Motion Synth App, designed to allow users to easily experience motion-based music creation. Follow the in-app video tutorial to learn how to play the musical instrument sounds included with the app (See 'SETUP VIDEO' button). An upgraded version of the app is also available, and has been carefully designed to work with the AUUG Motion Synth Grip. Together, the Motion Synth App and Grip transform your iPhone or iPod touch into a practical and powerful musical instrument. Get yours here: http://www.auug.com/order/ ------ Play in-app sounds, iOS music apps (e.g. GarageBand), or laptop software through movement: The AUUG Motion Synth tracks your movements and screen touches to expressively play in-app musical sounds. The AUUG Motion Synth also allows you to play the sounds of other iOS music apps, giving you access to a vast array of sounds and effects. You can also play external devices like hardware synths or vocal harmonizers as well as control audio or visual software on a laptop (via WiFi or cabled connections). The Motion Synth app is also compatible with the Music IO app, allowing you to control your laptop software via your iPhone cable (Lightning). ------ Use the Motion Synth App by itself or with a Motion Synth Grip: The Motion Synth App has two modes: 1) Single-Key mode (free version): This Motion Synth App mode allows you to quickly engage with motion-based music control, and includes tutorial videos explaining how to use the in-app sounds. 2) Multi-Key mode (upgrade): This Motion Synth App mode is designed to work with the AUUG Motion Synth Grip: a physical holder that securely attaches your iPhone or iPod touch to your hand, thereby improving the dexterity and accuracy with which you can trigger notes via the touch screen.

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

Motion Synth4 screens
GSDSP MMM4 screens

Verdict

The call

The clearest difference is rating: GSDSP MMM at 4.8 against Motion Synth's 3.5. GSDSP MMM also leads on update cadence (every 6 weeks vs every 4 months). Motion Synth's advantage is iOS requirement (9.0 vs 12.0). On price, review sentiment, 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

GSDSP MMM holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 40 and 34 respectively. Written reviews point the same way: 73% of Motion Synth's written reviews are positive against 75% of GSDSP MMM's.

UpkeepUpdate frequency

Motion Synth ships an update every 4 months, GSDSP MMM every 6 weeks. The most recent releases landed on October 13, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
Motion Synth versus GSDSP MMM: the parameters behind the verdict, then further details
ParameterMotion SynthGSDSP MMM
PriceFreeFree
Rating3.5 (40 ratings)4.8 (34 ratings) — better
Positive reviews73.3% of reviews75.0% of reviews — better
Number of ratings40 — better34
Update frequencyEvery 4 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.0 — better12.0
Further details — not scored
Size48 MB65 MB
Age rating4+4+
DeveloperAUUGGustav Scholda

Customer experience

Motion Synth

All ratings40 ratings
Positive60.0%
Neutral5.0%
Negative35.0%
Written reviews30 reviews
Positive73.3%
Neutral0.0%
Negative26.7%

GSDSP MMM

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

In-app purchases

None

Motion Synth

No in-app purchases

None

GSDSP MMM

No in-app purchases

Questions

Is Motion Synth free?
Motion Synth 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, Motion Synth or GSDSP MMM?
GSDSP MMM is rated higher. Motion Synth averages 3.5 out of 5 from 40 ratings, while GSDSP MMM averages 4.8 from 34 ratings.
Do Motion Synth or GSDSP MMM have ads?
Neither Motion Synth nor GSDSP MMM shows ads.
Which is updated more often, Motion Synth or GSDSP MMM?
Motion Synth ships an update every 4 months, and GSDSP MMM every 6 weeks. Most recently, Motion Synth was updated on October 13, 2026 and GSDSP MMM on September 17, 2026.

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