Comparison

CuSnP 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

CuSnP

This app acts as a container for a sympathetic string simulation Audio Unit Extension. It requires another application to function, where it generates resonant sounds based on input audio. It's designed for musicians and audio producers.

Highlights
  • Sympathetic string simulation
  • Audio Unit Extension (AU)
  • Resonates with input audio
  • Container for AU functionality
  • Documentation included
Read full description

CuSnP is an Audio Unit Extension, or AU, for the iPhone and iPad. This application is simply a container for the AU and serves only as the documentation. CuSnP must be used in some sort of AU host or DAW application. CuSnP is a sympathetic string simulation. Input audio excites the strings and causes them to resonate much like the open strings on a piano will resonate when some other sound source excites them.

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

CuSnP4 screens
GSDSP MMM4 screens

Verdict

The call

CuSnP and GSDSP MMM both sit at 4.8 stars, but that hides the real split: 100% of CuSnP's written reviews are positive against 75% of GSDSP MMM's. On price, rating, ratings volume and update cadence 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 — 4.8 for CuSnP against 4.8 for GSDSP MMM. Both are backed by a comparable volume of ratings — 36 and 34 respectively. Written reviews are what separate them: 100% of CuSnP's written reviews are positive against 75% of GSDSP MMM's.

UpkeepUpdate frequency

CuSnP ships an update every 2 months, GSDSP MMM every 6 weeks. The most recent releases landed on July 7, 2026 and August 21, 2026 respectively.

Scorecard1 real difference · 9 level
CuSnP versus GSDSP MMM: the parameters behind the verdict, then further details
ParameterCuSnPGSDSP MMM
PriceFreeFree
Rating4.8 (36 ratings)4.8 (34 ratings) — better
Positive reviews100.0% of reviews — better75.0% of reviews
Number of ratings36 — better34
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size9 MB65 MB
Age rating4+4+
DeveloperNeon SiliconGustav Scholda

Customer experience

CuSnP

All ratings36 ratings
Positive94.4%
Neutral2.8%
Negative2.8%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
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

CuSnP

No in-app purchases

None

GSDSP MMM

No in-app purchases

Questions

Is CuSnP free?
CuSnP 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, CuSnP or GSDSP MMM?
GSDSP MMM is rated higher. CuSnP averages 4.8 out of 5 from 36 ratings, while GSDSP MMM averages 4.8 from 34 ratings.
Do CuSnP or GSDSP MMM have ads?
Neither CuSnP nor GSDSP MMM shows ads.
Which is updated more often, CuSnP or GSDSP MMM?
CuSnP ships an update every 2 months, and GSDSP MMM every 6 weeks. Most recently, CuSnP was updated on July 7, 2026 and GSDSP MMM on August 21, 2026.

Other comparisons