# Eos 2 vs AU3FX

The clearest difference is rating: AU3FX at 5.0 against Eos 2's 4.4. AU3FX also leads on review sentiment (100% vs 63%) and update cadence (every 6 months vs every 15 months). Eos 2's advantage is chart position (#180 vs unranked). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Eos 2 costs $6.99 and AU3FX $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AU3FX holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 18 and 14 respectively. Written reviews point the same way: 63% of Eos 2's written reviews are positive against 100% of AU3FX's.

Eos 2 ships an update every 15 months, AU3FX every 6 months. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Eos 2 | AU3FX |
| --- | --- | --- |
| Price | $6.99 | **$4.99** |
| Rating | [4.4 (18 ratings)](https://appshunter.io/ios/app/eos-2/id1252122327/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/au3fxspace/id1540779621/reviews)** |
| Number of ratings | **18** | 14 |
| Positive reviews | 62.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Best chart rank | **#180** | — |
| Size | 27 MB | 2 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Audio Damage, Inc.](https://appshunter.io/developer/1248448317) | [Kymatica AB](https://appshunter.io/developer/522046659) |

## What reviewers say

### Eos 2

[App page](https://appshunter.io/ios/app/eos-2/id1252122327)

**Currently charting:** #180 Top Paid · Music (US App Store)

This studio-quality algorithmic reverb offers five unique algorithms for diverse audio production needs. Easily sculpt your sound with extensive controls and an intuitive interface, perfect for everything from subtle room effects to expansive ambient textures.

**Highlights:** Five custom reverb algorithms, Full control over reverb parameters, Rate and depth modulation, Three-band EQ, Infinite mode, AUv3 App Extension and standalone

**Features:** Vision Pro support

**In-app purchases:** none


### AU3FX

[App page](https://appshunter.io/ios/app/au3fxspace/id1540779621)

This professional audio effect plugin offers high-quality real-time reverb for iOS devices. It allows for extensive parameter tweaking to create a vast range of sonic spaces, from intimate rooms to infinite expanses. The app includes built-in presets and filters, with full external control and session saving capabilities.

**Highlights:** High quality 32-bit DSP engine, Extensive parameter tweaking, Built-in resonant filters, Bundled presets, Multiple instances, Save/load session state, External parameter control

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Eos 2 free?

Eos 2 costs $6.99, with no in-app purchases.

### Is AU3FX free?

AU3FX costs $4.99, with no in-app purchases.

### Which has better reviews, Eos 2 or AU3FX?

AU3FX is rated higher. Eos 2 averages 4.4 out of 5 from 18 ratings, while AU3FX averages 5.0 from 14 ratings.

### Do Eos 2 or AU3FX have ads?

Neither Eos 2 nor AU3FX shows ads.

### Which is updated more often, Eos 2 or AU3FX?

Eos 2 ships an update every 15 months, and AU3FX every 6 months. Most recently, Eos 2 was updated on September 26, 2026 and AU3FX on September 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*