# Zero Chorus vs Filterstep

The clearest difference is price: Filterstep at Free against Zero Chorus's $2.99. Filterstep also leads on rating (4.7 vs 4.2) and review sentiment (73% vs 43%). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Filterstep is free to download; Zero Chorus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Filterstep holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 22 and 42 respectively. Written reviews point the same way: 43% of Zero Chorus's written reviews are positive against 73% of Filterstep's.

Both ship on a similar rhythm, roughly every 6 months. Both last shipped on October 1, 2026.

## The numbers

| Metric | Zero Chorus | Filterstep |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.2 (22 ratings)](https://appshunter.io/ios/app/zero-chorus/id1056863629/reviews) | **[4.7 (42 ratings)](https://appshunter.io/ios/app/filterstep/id1500042551/reviews)** |
| Number of ratings | 22 | **42** |
| Positive reviews | 42.9% of reviews | **73.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Free | Free |
| Size | 15 MB | 12 MB |
| Requires iOS | 12.0 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [AUDIOMODERN](https://appshunter.io/developer/1435691908) |

## What reviewers say

### Zero Chorus

[App page](https://appshunter.io/ios/app/zero-chorus/id1056863629)

This audio effect plugin provides a high-quality chorus inspired by the Roland Dimension D, offering a versatile sound without muddy low end. It integrates seamlessly with iOS DAWs and supports expanded controls for easy tweaking.

**Highlights:** Roland Dimension D style chorus, Feedback control for flanging, AUv3 audio unit extension, Expanded touch controls, Desktop quality algorithm, Thickens guitar and synth parts

**In-app purchases:** none


### Filterstep

[App page](https://appshunter.io/ios/app/filterstep/id1500042551)

This app offers a creative motion filter plugin for real-time rhythmic movement. Explore intricate patterns and sonic possibilities with various filter effect settings and randomization. Shape any sound into a unique groove.

**Highlights:** Real-time rhythmic movement, Intricate filter effect settings, Filter randomization, Three filter types, Sequencer movement control, Infinity mode

**In-app purchases:** none


## Frequently asked questions

### Is Zero Chorus free?

Zero Chorus costs $2.99, with no in-app purchases.

### Is Filterstep free?

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

### Which has better reviews, Zero Chorus or Filterstep?

Filterstep is rated higher. Zero Chorus averages 4.2 out of 5 from 22 ratings, while Filterstep averages 4.7 from 42 ratings.

### Do Zero Chorus or Filterstep have ads?

Neither Zero Chorus nor Filterstep shows ads.

### Which is updated more often, Zero Chorus or Filterstep?

Zero Chorus ships an update every 6 months, and Filterstep every 6 months. Most recently, Zero Chorus was updated on October 1, 2026 and Filterstep on October 1, 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.*