# PolyIvoks Filter vs Filterjam

The clearest difference is in-app purchases: Filterjam at none against PolyIvoks Filter's 1. Filterjam also leads on rating (5.0 vs 4.7). PolyIvoks Filter's advantage is update cadence (fortnightly vs every 22 months) and iOS requirement (10.0 vs 14.0). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. PolyIvoks Filter sells 1 one-off in-app purchase. Filterjam asks for nothing beyond the download.

Filterjam holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 21 and 34 respectively. Written reviews complicate that: 86% of PolyIvoks Filter's written reviews are positive against 83% of Filterjam's, so the app with the better star average is not the one people write more warmly about.

PolyIvoks Filter ships an update fortnightly, Filterjam every 22 months. Both last shipped on October 1, 2026.

## The numbers

| Metric | PolyIvoks Filter | Filterjam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (21 ratings)](https://appshunter.io/ios/app/polyivoks-filter/id1507649629/reviews) | **[5.0 (34 ratings)](https://appshunter.io/ios/app/filterjam/id1659941144/reviews)** |
| Number of ratings | 21 | **34** |
| Positive reviews | **85.7% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 22 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 17 MB | 25 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RRS, OOO](https://appshunter.io/developer/1486125568) | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) |

## 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 |


### Filterjam

[App page](https://appshunter.io/ios/app/filterjam/id1659941144)

This app offers a multiband resonant filter for creating unique audio effects. It divides input signals into four bands, allowing for various sonic manipulations from subtle enhancements to extreme sound mangling.

**Highlights:** Multiband resonant filtering, 4-band signal division, Sum or multiply band modes, Versatile sound shaping, Ringmod-like effects

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PolyIvoks Filter free?

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

### Is Filterjam free?

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

### Which has better reviews, PolyIvoks Filter or Filterjam?

Filterjam is rated higher. PolyIvoks Filter averages 4.7 out of 5 from 21 ratings, while Filterjam averages 5.0 from 34 ratings.

### Do PolyIvoks Filter or Filterjam have ads?

Neither PolyIvoks Filter nor Filterjam shows ads.

### Which is updated more often, PolyIvoks Filter or Filterjam?

PolyIvoks Filter ships an update fortnightly, and Filterjam every 22 months. Most recently, PolyIvoks Filter was updated on October 1, 2026 and Filterjam on October 1, 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.*