# GSDSP MMM vs jAmp 8100

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.

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

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.

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

## The numbers

| Metric | GSDSP MMM | jAmp 8100 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (36 ratings)](https://appshunter.io/ios/app/gsdsp-mmm/id6443846329/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/jamp-8100/id6450633716/reviews)** |
| Number of ratings | **36** | 6 |
| Positive reviews | 66.7% 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 | 65 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 MMM

[App page](https://appshunter.io/ios/app/gsdsp-mmm/id6443846329)

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