Comparison

GSDSP MMMm vs jAmp 8100

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

Head to head
About

GSDSP MMMm

This app provides a powerful MIDI modulation engine to control various plugins, hardware, and instruments. It offers a range of modulation sources like LFOs and random generators, and includes a dedicated performance skin for live use. It's a MIDI-only FX version for hosts requiring pure MIDI processing.

Highlights
  • MIDI CC control for plugins and hardware
  • LFO, Random, Envelope Follower modulators
  • XY pads for modulation
  • Dedicated Performance Skin for live use
  • AUv3 MIDI FX plugin
  • Desktop versions available
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 MMMm 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 MMMm 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. MMMm is an AUv3 midi 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

About

jAmp 8100

This app digitally emulates a classic 90s solid-state guitar amplifier, offering authentic tones favored by metal bands. It functions as a standalone app or a plugin within DAWs, featuring a noise gate, compressor, and various effects.

Highlights
  • Marshall Valvestate 8100 emulation
  • Standalone and AUv3 plugin support
  • Noise gate and compressor
  • Ibanez Tube Screamer emulation
  • Impulse response (IR) loader
  • MIDI controller support
Features
Read full description

jAmp 8100 represents a digital emulation of the Marshall Valvestate 8100 amplifier, which stood out as one of the most impressive-sounding amplifiers of the 90s. Numerous metal bands showcased this amplifier in their albums, with particularly notable appearances in the works of bands such as Death, Prong, and Static-X. Features: - Standalone, or as a AUv3 plugin in GarageBand, Logic Pro, or other DAW. - Marshall Valvestate 8100 emulation - Noise gate - Compressor - Ibanez Tube Screamer emulation - Pre amp chorus - Five band post amp equalizer - Post amp stereo chorus - Impulse response (IR) loader - MIDI controller support with MIDI learn - Stereo effect - Integrated IRs by forward-audio.com and Valhallir.at The free version allows you to test jAmp 8100 completely, but every minute the amplifier will be silent for 3 seconds. To remove these limits there is a one time in-app purchase. You need an audio interface to connect your instrument to your mobile device. Known audio interface brands are for instance Focusrite or iRig. For iPad you might want to consider using a USB-C hub with power delivery to avoid draining your battery during your jam session, but this is optional. For iPhone you will need to use an adapter that can  1. connect via lightning port to your iPhone 2. connect to your phone charger with USB 3. connect to your audio interface with USB If you have a Focusrite Scarlett 2i2 or similar you can use the lighting to USB 3 camera adapter for this which is easily available in the market. Your iPhone cannot deliver enough power on its own to feed the audio interface, so this adapter with a connection to your phone charger is necessary. If you don't have an audio interface, you can still use the AUv3 plugin in a DAW such as GarageBand or Logic Pro. Any (guitar) sound you have recorded can be fed through the jAmp 8100 audio unit to add solid state distortion or any of the other included effects.

Screenshots

GSDSP MMMm4 screens
jAmp 81004 screens

Verdict

The call

The clearest difference is in-app purchases: GSDSP MMMm at none against jAmp 8100's 1. GSDSP MMMm also leads on review sentiment (100% vs 67%). 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. jAmp 8100 sells 1 one-off in-app purchase. GSDSP MMMm asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for GSDSP MMMm against 5.0 for jAmp 8100. Both are backed by a comparable volume of ratings — 16 and 6 respectively. Written reviews are what separate them: 100% of GSDSP MMMm's written reviews are positive against 67% of jAmp 8100's.

UpkeepUpdate frequency

GSDSP MMMm ships an update every 5 weeks, jAmp 8100 every 3 weeks. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
GSDSP MMMm versus jAmp 8100: the parameters behind the verdict, then further details
ParameterGSDSP MMMmjAmp 8100
PriceFreeFree
Rating4.9 (16 ratings)5.0 (6 ratings) — better
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings16 — better6
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.0 — better14.0
Further details — not scored
Size44 MB34 MB
Age rating4+4+
DeveloperGustav ScholdaJan Maes

Customer experience

GSDSP MMMm

All ratings16 ratings
Positive93.8%
Neutral6.3%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

jAmp 8100

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

GSDSP MMMm

No in-app purchases

1 purchases

jAmp 8100

One-time1
  • jAmp 8100 Activation$11.99

Questions

Is GSDSP MMMm free?
GSDSP MMMm is free to download, with no in-app purchases.
Is jAmp 8100 free?
jAmp 8100 is free to download, with in-app purchases available.
Which has better reviews, GSDSP MMMm or jAmp 8100?
jAmp 8100 is rated higher. GSDSP MMMm averages 4.9 out of 5 from 16 ratings, while jAmp 8100 averages 5.0 from 6 ratings.
Do GSDSP MMMm or jAmp 8100 have ads?
Neither GSDSP MMMm nor jAmp 8100 shows ads.
Which is updated more often, GSDSP MMMm or jAmp 8100?
GSDSP MMMm ships an update every 5 weeks, and jAmp 8100 every 3 weeks. Most recently, GSDSP MMMm was updated on October 27, 2026 and jAmp 8100 on October 30, 2026.

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