# DubFilter vs GSDSP MMM

The clearest difference is in-app purchases: GSDSP MMM at none against DubFilter's 1. GSDSP MMM also leads on update cadence (every 6 weeks vs every 6 months) and iOS requirement (12.0 vs 17.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. DubFilter 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 DubFilter against 4.8 for GSDSP MMM. Both are backed by a comparable volume of ratings — 71 and 34 respectively. Written reviews are what separate them: 73% of DubFilter's written reviews are positive against 75% of GSDSP MMM's.

DubFilter ships an update every 6 months, GSDSP MMM every 6 weeks. The most recent releases landed on October 7, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | DubFilter | GSDSP MMM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (71 ratings)](https://appshunter.io/ios/app/dubfilter/id979648058/reviews) | **[4.8 (34 ratings)](https://appshunter.io/ios/app/gsdsp-mmm/id6443846329/reviews)** |
| Number of ratings | **71** | 34 |
| Positive reviews | 73.3% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 65 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Amazing Noises](https://appshunter.io/developer/903336421) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### DubFilter

[App page](https://appshunter.io/ios/app/dubfilter/id979648058)

This app provides a powerful dual filter with resonance and an exclusive overlap parameter. It also features a redesigned stereo sample player with LFO and scrubbing, along with extensive MIDI and file management capabilities.

**Highlights:** Dual low-pass/high-pass filter, Resonance and Overlap parameter, Stereo sample player with LFO, Scrubbing capabilities, Audiobus and Inter-App Audio support, MIDI control and file management, Preset morphing pad

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Unit Plugin Support | $1.99 | 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 DubFilter free?

DubFilter 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, DubFilter or GSDSP MMM?

GSDSP MMM is rated higher. DubFilter averages 4.7 out of 5 from 71 ratings, while GSDSP MMM averages 4.8 from 34 ratings.

### Do DubFilter or GSDSP MMM have ads?

Neither DubFilter nor GSDSP MMM shows ads.

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

DubFilter ships an update every 6 months, and GSDSP MMM every 6 weeks. Most recently, DubFilter was updated on October 7, 2026 and GSDSP MMM on September 17, 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.*