# TB Compressor vs AU3FX

The clearest difference is update cadence: AU3FX at every 4 days against TB Compressor's every 2 months. AU3FX also leads on price ($6.99 vs $8.99). On rating, review sentiment, ratings volume and ads there is nothing between them.

TB Compressor costs $8.99 and AU3FX $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.8 for TB Compressor against 4.7 for AU3FX. Both are backed by a comparable volume of ratings — 24 and 14 respectively. Written reviews are what separate them: 82% of TB Compressor's written reviews are positive against 75% of AU3FX's.

TB Compressor ships an update every 2 months, AU3FX every 4 days. The most recent releases landed on October 9, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | TB Compressor | AU3FX |
| --- | --- | --- |
| Price | $8.99 | **$6.99** |
| Rating | **[4.8 (24 ratings)](https://appshunter.io/ios/app/tb-compressor/id1517791397/reviews)** | [4.7 (14 ratings)](https://appshunter.io/ios/app/au3fxpush/id1596371447/reviews) |
| Number of ratings | **24** | 14 |
| Positive reviews | **82.4% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | Paid |
| Size | 11 MB | 2 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ToneBoosters](https://appshunter.io/developer/1472446500) | [Kymatica AB](https://appshunter.io/developer/522046659) |

## What reviewers say

### TB Compressor

[App page](https://appshunter.io/ios/app/tb-compressor/id1517791397)

This professional audio plugin offers mastering-grade compression and dynamics processing for iOS devices. It features advanced controls like soft knee, parallel, upward/downward, and band-limited compression, with real-time visual feedback and an interactive interface.

**Highlights:** Mastering-grade compression, Upward and downward compression, External side-chain input, Band-limited and spatially selective compression, Real-time interactive display, Audition function for compressor and side chain, Integrated spectrum analyzer

**In-app purchases:** none


### AU3FX

[App page](https://appshunter.io/ios/app/au3fxpush/id1596371447)

This audio effect plugin offers a versatile stereo dynamics processor with a noise gate, compressor/expander, and limiter. Achieve subtle compression, extreme pumping, or maximum loudness with its highly tweakable controls and high-quality DSP.

**Highlights:** Noise gate, Compressor/expander with side-chain, Limiter/clipper, Negative ratio support, External side-chain input, Parallel compression, Adjustable envelope followers

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TB Compressor free?

TB Compressor costs $8.99, with no in-app purchases.

### Is AU3FX free?

AU3FX costs $6.99, with no in-app purchases.

### Which has better reviews, TB Compressor or AU3FX?

TB Compressor is rated higher. TB Compressor averages 4.8 out of 5 from 24 ratings, while AU3FX averages 4.7 from 14 ratings.

### Do TB Compressor or AU3FX have ads?

Neither TB Compressor nor AU3FX shows ads.

### Which is updated more often, TB Compressor or AU3FX?

TB Compressor ships an update every 2 months, and AU3FX every 4 days. Most recently, TB Compressor was updated on October 9, 2026 and AU3FX on October 13, 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.*