# PolyIvoks Filter vs GSDSP MMM

The clearest difference is in-app purchases: GSDSP MMM at none against PolyIvoks Filter's 1. PolyIvoks Filter's advantage is update cadence (fortnightly vs every 6 weeks) and review sentiment (86% vs 75%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. PolyIvoks Filter 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 PolyIvoks Filter against 4.8 for GSDSP MMM. Both are backed by a comparable volume of ratings — 21 and 34 respectively. Written reviews are what separate them: 86% of PolyIvoks Filter's written reviews are positive against 75% of GSDSP MMM's.

PolyIvoks Filter ships an update fortnightly, GSDSP MMM every 6 weeks. The most recent releases landed on September 13, 2026 and August 21, 2026 respectively.

## The numbers

| Metric | PolyIvoks Filter | GSDSP MMM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (21 ratings)](https://appshunter.io/ios/app/polyivoks-filter/id1507649629/reviews) | **[4.8 (34 ratings)](https://appshunter.io/ios/app/gsdsp-mmm/id6443846329/reviews)** |
| Number of ratings | 21 | **34** |
| Positive reviews | **85.7% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 17 MB | 65 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RRS, OOO](https://appshunter.io/developer/1486125568) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### PolyIvoks Filter

[App page](https://appshunter.io/ios/app/polyivoks-filter/id1507649629)

This audio effect plugin emulates the sound of a legendary 1980s Soviet synthesizer filter. It offers stereo output and a range of modulation and envelope controls for creative sound shaping. A demo version is available with limited free play time.

**Highlights:** Standalone and AUv3 plugin, Modeled vintage filter, LFO and envelope modulation, Stereo output, Scalable GUI, Undo/Redo and A/B comparison

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RRS PolyIvoks Filter Unlimited | $4.99 | 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 PolyIvoks Filter free?

PolyIvoks Filter 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, PolyIvoks Filter or GSDSP MMM?

GSDSP MMM is rated higher. PolyIvoks Filter averages 4.7 out of 5 from 21 ratings, while GSDSP MMM averages 4.8 from 34 ratings.

### Do PolyIvoks Filter or GSDSP MMM have ads?

Neither PolyIvoks Filter nor GSDSP MMM shows ads.

### Which is updated more often, PolyIvoks Filter or GSDSP MMM?

PolyIvoks Filter ships an update fortnightly, and GSDSP MMM every 6 weeks. Most recently, PolyIvoks Filter was updated on September 13, 2026 and GSDSP MMM on August 21, 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.*