# Effectrix vs GSDSP MMM

The clearest difference is in-app purchases: GSDSP MMM at none against Effectrix's 1. GSDSP MMM also leads on update cadence (every 6 weeks vs every 4 months) and device support (3 vs 1). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.7 for Effectrix against 4.8 for GSDSP MMM. Both are backed by a comparable volume of ratings — 97 and 34 respectively. Written reviews are what separate them: 67% of Effectrix's written reviews are positive against 75% of GSDSP MMM's.

Effectrix ships an update every 4 months, GSDSP MMM every 6 weeks. The most recent releases landed on August 7, 2026 and August 21, 2026 respectively.

## The numbers

| Metric | Effectrix | GSDSP MMM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (97 ratings)](https://appshunter.io/ios/app/effectrix/id681772221/reviews) | **[4.8 (34 ratings)](https://appshunter.io/ios/app/gsdsp-mmm/id6443846329/reviews)** |
| Number of ratings | **97** | 34 |
| Positive reviews | 67.3% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 52 MB | 65 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sugar Bytes GmbH](https://appshunter.io/developer/614418826) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### Effectrix

[App page](https://appshunter.io/ios/app/effectrix/id681772221)

This professional multi-effect sequencer for iPad allows users to create unique sound patterns and loop collages by scattering 14 intelligent effects across a sequencer matrix. It offers a playful workflow, refined algorithms, and a wide spectrum of effects for outstanding results.

**Highlights:** Multi-effect sequencer matrix, 14 intelligent effects, Creative sound pattern generation, Loop collage creation, Audio Unit v3 integration, Full MIDI support, Ableton Link synchronization

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Effectrix Full Version | $24.99 | one-time |


### 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

**In-app purchases:** none


## Frequently asked questions

### Is Effectrix free?

Effectrix is free to download, with in-app purchases available.

### Is GSDSP MMM free?

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

### Which has better reviews, Effectrix or GSDSP MMM?

GSDSP MMM is rated higher. Effectrix averages 4.7 out of 5 from 97 ratings, while GSDSP MMM averages 4.8 from 34 ratings.

### Do Effectrix or GSDSP MMM have ads?

Neither Effectrix nor GSDSP MMM shows ads.

### Which is updated more often, Effectrix or GSDSP MMM?

Effectrix ships an update every 4 months, and GSDSP MMM every 6 weeks. Most recently, Effectrix was updated on August 7, 2026 and GSDSP MMM on August 21, 2026.

---

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