# GSDSP MMMm vs jAmp 8100

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.

Both are free to download. jAmp 8100 sells 1 one-off in-app purchase. GSDSP MMMm asks for nothing beyond the download.

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.

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.

## The numbers

| Metric | GSDSP MMMm | jAmp 8100 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (16 ratings)](https://appshunter.io/ios/app/gsdsp-mmmm/id6450306205/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/jamp-8100/id6450633716/reviews)** |
| Number of ratings | **16** | 6 |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 34 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Gustav Scholda](https://appshunter.io/developer/1642323227) | [Jan Maes](https://appshunter.io/developer/1550506252) |

## What reviewers say

### GSDSP MMMm

[App page](https://appshunter.io/ios/app/gsdsp-mmmm/id6450306205)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### jAmp 8100

[App page](https://appshunter.io/ios/app/jamp-8100/id6450633716)

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:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| jAmp 8100 Activation | $11.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*