# GSDSP MMMm vs jAmp IR

GSDSP MMMm and jAmp IR both sit at 4.9 stars, but that hides the real split: 100% of GSDSP MMMm's written reviews are positive against 67% of jAmp IR's. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for GSDSP MMMm against 4.7 for jAmp IR. Both are backed by a comparable volume of ratings — 16 and 15 respectively. Written reviews are what separate them: 100% of GSDSP MMMm's written reviews are positive against 67% of jAmp IR's.

GSDSP MMMm ships an update every 5 weeks, jAmp IR every 2 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GSDSP MMMm | jAmp IR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (16 ratings)](https://appshunter.io/ios/app/gsdsp-mmmm/id6450306205/reviews)** | [4.7 (15 ratings)](https://appshunter.io/ios/app/jamp-ir/id6476031801/reviews) |
| Number of ratings | **16** | 15 |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 44 MB | 1 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 IR

[App page](https://appshunter.io/ios/app/jamp-ir/id6476031801)

This tool loads impulse responses for guitar and bass amp cabinet simulation. It allows mixing two impulse responses and offers fine control over filters, gain, and phase. The app includes five high-quality impulse responses.

**Highlights:** Impulse response loader, Cabinet simulator for guitar and bass, Mix two impulse responses, High and low pass filters, Gain control, Phase inversion

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GSDSP MMMm free?

GSDSP MMMm is free to download, with no in-app purchases.

### Is jAmp IR free?

jAmp IR is free to download, with no in-app purchases.

### Which has better reviews, GSDSP MMMm or jAmp IR?

GSDSP MMMm is rated higher. GSDSP MMMm averages 4.9 out of 5 from 16 ratings, while jAmp IR averages 4.7 from 15 ratings.

### Do GSDSP MMMm or jAmp IR have ads?

Neither GSDSP MMMm nor jAmp IR shows ads.

### Which is updated more often, GSDSP MMMm or jAmp IR?

GSDSP MMMm ships an update every 5 weeks, and jAmp IR every 2 weeks. Most recently, GSDSP MMMm was updated on October 27, 2026 and jAmp IR on October 24, 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.*