# Zero Chorus vs RRS HLF

The clearest difference is review sentiment: RRS HLF at 100% against Zero Chorus's 43%. RRS HLF also leads on price (Free vs $2.99) and rating (5.0 vs 4.2). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

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

RRS HLF holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 21 and 19 respectively. Written reviews point the same way: 43% of Zero Chorus's written reviews are positive against 100% of RRS HLF's.

Zero Chorus ships an update every 6 months, RRS HLF every 3 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Zero Chorus | RRS HLF |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.2 (21 ratings)](https://appshunter.io/ios/app/zero-chorus/id1056863629/reviews) | **[5.0 (19 ratings)](https://appshunter.io/ios/app/rrs-hlf-3c/id1641858127/reviews)** |
| Number of ratings | **21** | 19 |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 15 MB | 22 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [RRS, OOO](https://appshunter.io/developer/1486125568) |

## 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


### RRS HLF

[App page](https://appshunter.io/ios/app/rrs-hlf-3c/id1641858127)

This audio plugin offers broad tonal sculpting with 12 dB per octave low and high cut filters. It allows for precise frequency subtraction to enhance musicality in mixes, compensating for hardware signal loss with unity gain.

**Highlights:** 12 dB/octave low and high cut filters, Retro-tonal sculpting, Special effects, Compensates for insertion loss, Unity gain upon insertion, Simple three-control interface

**In-app purchases:** none


## Frequently asked questions

### Is Zero Chorus free?

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

### Is RRS HLF free?

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

### Which has better reviews, Zero Chorus or RRS HLF?

RRS HLF is rated higher. Zero Chorus averages 4.2 out of 5 from 21 ratings, while RRS HLF averages 5.0 from 19 ratings.

### Do Zero Chorus or RRS HLF have ads?

Neither Zero Chorus nor RRS HLF shows ads.

### Which is updated more often, Zero Chorus or RRS HLF?

Zero Chorus ships an update every 6 months, and RRS HLF every 3 months. Most recently, Zero Chorus was updated on November 6, 2026 and RRS HLF on November 3, 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.*