# Sidechain Compressor Plugin vs FrobulatorAU

The clearest difference is price: FrobulatorAU at Free against Sidechain Compressor Plugin's $5.99. FrobulatorAU also leads on rating (5.0 vs 3.6) and update cadence (every 9 days vs every 67 months). Sidechain Compressor Plugin's advantage is iOS requirement (11.0 vs 17.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

FrobulatorAU is free to download; Sidechain Compressor Plugin costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FrobulatorAU holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 5 and 8 respectively.

Sidechain Compressor Plugin ships an update every 67 months, FrobulatorAU every 9 days. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Sidechain Compressor Plugin | FrobulatorAU |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [3.6 (5 ratings)](https://appshunter.io/ios/app/sidechain-compressor-plugin/id1500710796/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/frobulatorau/id6760205581/reviews)** |
| Number of ratings | 5 | **8** |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 67 months | **Every 9 days** |
| Monetization | Paid | **Free** |
| Size | 12 MB | 2 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [4Pockets.com](https://appshunter.io/developer/370131860) | [Matthew Caldwell](https://appshunter.io/developer/993500585) |

## What reviewers say

### Sidechain Compressor Plugin

[App page](https://appshunter.io/ios/app/sidechain-compressor-plugin/id1500710796)

This audio plugin enables side-chain compression for music production, creating rhythmic pumping effects. It offers true side-chaining in compatible DAWs and a unique sudo side-chain method for broader compatibility.

**Highlights:** Standard compressor features, Real calibrated VU and reduction meters, Real-time visual graphing, True sidechain in AUM, Sudo sidechain with MASTER/SLAVE, 3 available busses, Mono/Stereo modes

**Features:** macOS Compatibility

**In-app purchases:** none


### FrobulatorAU

[App page](https://appshunter.io/ios/app/frobulatorau/id6760205581)

This audio effect plugin transforms sounds with spectral delay, adding unique character to music projects. It's a free and open-source tool designed for use in various audio applications, offering extensive creative possibilities.

**Highlights:** Spectral delay effect, AUv3 plugin, Use in GarageBand, AUM, and other DAWs, Multiple instances per project, Free and open-source, No ads or in-app purchases

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sidechain Compressor Plugin free?

Sidechain Compressor Plugin costs $5.99, with no in-app purchases.

### Is FrobulatorAU free?

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

### Which has better reviews, Sidechain Compressor Plugin or FrobulatorAU?

FrobulatorAU is rated higher. Sidechain Compressor Plugin averages 3.6 out of 5 from 5 ratings, while FrobulatorAU averages 5.0 from 8 ratings.

### Do Sidechain Compressor Plugin or FrobulatorAU have ads?

Neither Sidechain Compressor Plugin nor FrobulatorAU shows ads.

### Which is updated more often, Sidechain Compressor Plugin or FrobulatorAU?

Sidechain Compressor Plugin ships an update every 67 months, and FrobulatorAU every 9 days. Most recently, Sidechain Compressor Plugin was updated on October 20, 2026 and FrobulatorAU on October 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.*