Comparison

GSDSP MMM 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 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?

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 MMM4 screens
jAmp 81004 screens

Verdict

The call

The clearest difference is in-app purchases: GSDSP MMM at none against jAmp 8100's 1. GSDSP MMM also leads on ratings volume (36 vs 6). jAmp 8100's advantage is rating (5.0 vs 4.7). On price, review sentiment, update cadence 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. jAmp 8100 sells 1 one-off in-app purchase. GSDSP MMM asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

jAmp 8100 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: GSDSP MMM has 36 ratings behind it against 6, so its average is the more settled of the two. Written reviews split almost evenly too, at 67% and 67% positive.

UpkeepUpdate frequency

GSDSP MMM ships an update every 5 weeks, jAmp 8100 every 3 weeks. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
GSDSP MMM versus jAmp 8100: the parameters behind the verdict, then further details
ParameterGSDSP MMMjAmp 8100
PriceFreeFree
Rating4.7 (36 ratings)5.0 (6 ratings) — better
Positive reviews66.7% of reviews66.7% of reviews
Number of ratings36 — 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
Size65 MB34 MB
Age rating4+4+
DeveloperGustav ScholdaJan Maes

Customer experience

GSDSP MMM

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

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 MMM

No in-app purchases

1 purchases

jAmp 8100

One-time1
  • jAmp 8100 Activation$11.99

Questions

Is GSDSP MMM free?
GSDSP MMM 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 MMM or jAmp 8100?
jAmp 8100 is rated higher. GSDSP MMM averages 4.7 out of 5 from 36 ratings, while jAmp 8100 averages 5.0 from 6 ratings.
Do GSDSP MMM or jAmp 8100 have ads?
Neither GSDSP MMM nor jAmp 8100 shows ads.
Which is updated more often, GSDSP MMM or jAmp 8100?
GSDSP MMM ships an update every 5 weeks, and jAmp 8100 every 3 weeks. Most recently, GSDSP MMM was updated on November 3, 2026 and jAmp 8100 on November 3, 2026.

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