# DubFilter vs Zero Chorus

The clearest difference is price: DubFilter at Free against Zero Chorus's $2.99. DubFilter also leads on rating (4.7 vs 4.2) and review sentiment (73% vs 43%). Zero Chorus's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.0). On update cadence, ads and device support there is nothing between them.

DubFilter is free to download; Zero Chorus costs $2.99 up front. DubFilter sells 1 one-off in-app purchase. Zero Chorus asks for nothing beyond the download.

DubFilter holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 71 and 22 respectively. Written reviews point the same way: 73% of DubFilter's written reviews are positive against 43% of Zero Chorus's.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | DubFilter | Zero Chorus |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.7 (71 ratings)](https://appshunter.io/ios/app/dubfilter/id979648058/reviews)** | [4.2 (22 ratings)](https://appshunter.io/ios/app/zero-chorus/id1056863629/reviews) |
| Number of ratings | **71** | 22 |
| Positive reviews | **73.3% of reviews** | 42.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 15 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Amazing Noises](https://appshunter.io/developer/903336421) | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) |

## What reviewers say

### DubFilter

[App page](https://appshunter.io/ios/app/dubfilter/id979648058)

This app provides a powerful dual filter with resonance and an exclusive overlap parameter. It also features a redesigned stereo sample player with LFO and scrubbing, along with extensive MIDI and file management capabilities.

**Highlights:** Dual low-pass/high-pass filter, Resonance and Overlap parameter, Stereo sample player with LFO, Scrubbing capabilities, Audiobus and Inter-App Audio support, MIDI control and file management, Preset morphing pad

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Unit Plugin Support | $1.99 | one-time |


### 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


## Frequently asked questions

### Is DubFilter free?

DubFilter is free to download, with in-app purchases available.

### Is Zero Chorus free?

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

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

DubFilter is rated higher. DubFilter averages 4.7 out of 5 from 71 ratings, while Zero Chorus averages 4.2 from 22 ratings.

### Do DubFilter or Zero Chorus have ads?

Neither DubFilter nor Zero Chorus shows ads.

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

DubFilter ships an update every 6 months, and Zero Chorus every 6 months. Most recently, DubFilter was updated on October 7, 2026 and Zero Chorus on October 9, 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.*