# AU3FX vs SpaceFields

The clearest difference is price: AU3FX at $4.99 against SpaceFields's $10.99. AU3FX also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 90%). SpaceFields's advantage is update cadence (every 2 months vs every 6 months) and ratings volume (47 vs 14). On ads, in-app purchases, monetization model and device support there is nothing between them.

AU3FX costs $4.99 and SpaceFields $10.99 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 4.7. Both are backed by a comparable volume of ratings — 14 and 47 respectively. Written reviews point the same way: 100% of AU3FX's written reviews are positive against 90% of SpaceFields's.

AU3FX ships an update every 6 months, SpaceFields every 2 months. The most recent releases landed on September 26, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | AU3FX | SpaceFields |
| --- | --- | --- |
| Price | **$4.99** | $10.99 |
| Rating | **[5.0 (14 ratings)](https://appshunter.io/ios/app/au3fxspace/id1540779621/reviews)** | [4.7 (47 ratings)](https://appshunter.io/ios/app/spacefields/id1596872812/reviews) |
| Number of ratings | 14 | **47** |
| Positive reviews | **100.0% of reviews** | 90.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 2 MB | 132 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kymatica AB](https://appshunter.io/developer/522046659) | [Igor Vasiliev](https://appshunter.io/developer/424401626) |

## What reviewers say

### 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


### SpaceFields

[App page](https://appshunter.io/ios/app/spacefields/id1596872812)

Create evolving rhythmic soundscapes from any audio source. This app uses a loop-based system with dual loops, pitch shifting, and effects to generate ambient textures and rhythmic structures. Experiment with complex sound design using intuitive controls and randomization.

**Highlights:** Loop-based sound mangling, Dual loop recorder, Pitch shifting and effects, Convolution reverb with deep spaces, Rhythmic structure generation, Automation generators with randomization, Live and sample processing modes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AU3FX free?

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

### Is SpaceFields free?

SpaceFields costs $10.99, with no in-app purchases.

### Which has better reviews, AU3FX or SpaceFields?

AU3FX is rated higher. AU3FX averages 5.0 out of 5 from 14 ratings, while SpaceFields averages 4.7 from 47 ratings.

### Do AU3FX or SpaceFields have ads?

Neither AU3FX nor SpaceFields shows ads.

### Which is updated more often, AU3FX or SpaceFields?

AU3FX ships an update every 6 months, and SpaceFields every 2 months. Most recently, AU3FX was updated on September 26, 2026 and SpaceFields on September 22, 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.*