# Filterstation2 vs AU3FX

Filterstation2 and AU3FX both sit at 4.4 stars, but that hides the real split: 100% of AU3FX's written reviews are positive against 75% of Filterstation2's. On price, rating, ratings volume and ads there is nothing between them.

Filterstation2 costs $4.99 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, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 18 and 10 respectively. Written reviews point the same way: 75% of Filterstation2's written reviews are positive against 100% of AU3FX's.

## The numbers

| Metric | Filterstation2 | AU3FX |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| Rating | [4.4 (18 ratings)](https://appshunter.io/ios/app/filterstation2/id1329509841/reviews) | **[4.6 (10 ratings)](https://appshunter.io/ios/app/au3fxpeakq/id1597768353/reviews)** |
| Number of ratings | **18** | 10 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | — |
| Monetization | Paid | Paid |
| Size | 29 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

### Filterstation2

[App page](https://appshunter.io/ios/app/filterstation2/id1329509841)

This app offers a versatile dual filter effect for music production, inspired by classic hardware. It features twelve filter algorithms, an envelope follower, and multiple operating modes for creative sound shaping. Its user-friendly interface and resizable GUI make it a powerful tool for producers.

**Highlights:** Twelve filter algorithms, Envelope follower with sidechain, VCA mode for tremolo/gate, LFO with tempo sync, Serial, parallel, and stereo modes, Resizable GUI, Cross-platform preset manager

**Features:** Vision Pro support

**In-app purchases:** none


### AU3FX

[App page](https://appshunter.io/ios/app/au3fxpeakq/id1597768353)

A powerful 4-band parametric stereo equalizer AUv3 plugin for iOS. It offers detailed frequency control, real-time spectrum analysis, and customizable presets for subtle enhancements or aggressive sound shaping. Load it within compatible music apps to enhance your audio.

**Highlights:** 4-band parametric stereo equalizer, High quality 32-bit DSP engine, Interactive frequency response curve, Real-time FFT spectrum analyzer, Bundled presets and user preset saving, Multiple instances and external control

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Filterstation2 free?

Filterstation2 costs $4.99, with no in-app purchases.

### Is AU3FX free?

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

### Which has better reviews, Filterstation2 or AU3FX?

AU3FX is rated higher. Filterstation2 averages 4.4 out of 5 from 18 ratings, while AU3FX averages 4.6 from 10 ratings.

### Do Filterstation2 or AU3FX have ads?

Neither Filterstation2 nor AU3FX shows ads.

---

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