# PolyIvoks Filter vs Fair Limiter

The clearest difference is review sentiment: PolyIvoks Filter at 86% against Fair Limiter's 50%. PolyIvoks Filter also leads on rating (4.7 vs 4.4) and iOS requirement (10.0 vs 14.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. PolyIvoks Filter sells 1 one-off in-app purchase and Fair Limiter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

PolyIvoks Filter holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 21 and 8 respectively. Written reviews point the same way: 86% of PolyIvoks Filter's written reviews are positive against 50% of Fair Limiter's.

PolyIvoks Filter ships an update fortnightly, Fair Limiter monthly. The most recent releases landed on October 1, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | PolyIvoks Filter | Fair Limiter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (21 ratings)](https://appshunter.io/ios/app/polyivoks-filter/id1507649629/reviews)** | [4.4 (8 ratings)](https://appshunter.io/ios/app/fair-limiter/id6503627515/reviews) |
| Number of ratings | **21** | 8 |
| Positive reviews | **85.7% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 17 MB | 32 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [RRS, OOO](https://appshunter.io/developer/1486125568) | [Jan Maes](https://appshunter.io/developer/1550506252) |

## 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 |


### Fair Limiter

[App page](https://appshunter.io/ios/app/fair-limiter/id6503627515)

This audio unit plugin emulates the classic Fairchild 670 tube compressor and limiter, offering its renowned sonic character. It provides comprehensive controls, including sidechain filters and boost, for detailed audio shaping. A free version is available for testing, with a one-time purchase to remove limitations.

**Highlights:** AUv3 plugin for DAWs, Fairchild 670 emulation, Sidechain filters and boost, Variable-Mu compression, Stereo or Mid/Side setup, 6386 tube simulation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fair Limiter Activation | $11.99 | one-time |


## Frequently asked questions

### Is PolyIvoks Filter free?

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

### Is Fair Limiter free?

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

### Which has better reviews, PolyIvoks Filter or Fair Limiter?

PolyIvoks Filter is rated higher. PolyIvoks Filter averages 4.7 out of 5 from 21 ratings, while Fair Limiter averages 4.4 from 8 ratings.

### Do PolyIvoks Filter or Fair Limiter have ads?

Neither PolyIvoks Filter nor Fair Limiter shows ads.

### Which is updated more often, PolyIvoks Filter or Fair Limiter?

PolyIvoks Filter ships an update fortnightly, and Fair Limiter monthly. Most recently, PolyIvoks Filter was updated on October 1, 2026 and Fair Limiter on September 27, 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.*