# EQ550b vs Fair Limiter

The clearest difference is review sentiment: EQ550b at 100% against Fair Limiter's 50%. EQ550b also leads on rating (4.8 vs 4.4) and update cadence (every 2 weeks vs monthly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. EQ550b 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.

EQ550b holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 13 and 8 respectively. Written reviews point the same way: 100% of EQ550b's written reviews are positive against 50% of Fair Limiter's.

EQ550b ships an update every 2 weeks, Fair Limiter monthly. The most recent releases landed on September 1, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | EQ550b | Fair Limiter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (13 ratings)](https://appshunter.io/ios/app/eq550b/id1507176549/reviews)** | [4.4 (8 ratings)](https://appshunter.io/ios/app/fair-limiter/id6503627515/reviews) |
| Number of ratings | **13** | 8 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 19 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

### EQ550b

[App page](https://appshunter.io/ios/app/eq550b/id1507176549)

This audio effect plugin emulates a classic American equalizer from the late 1960s, offering four bands of equalization with selectable frequencies and proportional Q. It provides a wide range of tonal variations for professional audio manipulation and can be used as a standalone app or an AUv3 plugin.

**Highlights:** Modeled vintage EQ, Four bands of equalization, Selectable frequency centers, Proportional Q filter, Stereo, Mid, or Side EQ modes, AUv3 plugin compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RRS EQ550b 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 EQ550b free?

EQ550b 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, EQ550b or Fair Limiter?

EQ550b is rated higher. EQ550b averages 4.8 out of 5 from 13 ratings, while Fair Limiter averages 4.4 from 8 ratings.

### Do EQ550b or Fair Limiter have ads?

Neither EQ550b nor Fair Limiter shows ads.

### Which is updated more often, EQ550b or Fair Limiter?

EQ550b ships an update every 2 weeks, and Fair Limiter monthly. Most recently, EQ550b was updated on September 1, 2026 and Fair Limiter on August 31, 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.*