# Sirens' Chor vs Multiband Haas Effect

The clearest difference is update cadence: Multiband Haas Effect at every 3 weeks against Sirens' Chor's every 39 months. Sirens' Chor's advantage is price ($3.99 vs $5.99) and iOS requirement (10.0 vs 12.0). On rating, review sentiment, ratings volume and ads there is nothing between them.

Sirens' Chor costs $3.99 and Multiband Haas Effect $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.0 for Sirens' Chor against 4.0 for Multiband Haas Effect. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Sirens' Chor ships an update every 39 months, Multiband Haas Effect every 3 weeks. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Sirens' Chor | Multiband Haas Effect |
| --- | --- | --- |
| Price | **$3.99** | $5.99 |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/sirens-chor-synth-chorus/id1497361812/reviews) | [4.0 (5 ratings)](https://appshunter.io/ios/app/multiband-haas-effect/id1526429747/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 11 MB | 4 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) | [Blue Mangoo Consulting Company Limited](https://appshunter.io/developer/1475107602) |

## What reviewers say

### Sirens' Chor

[App page](https://appshunter.io/ios/app/sirens-chor-synth-chorus/id1497361812)

This experimental audio effect app analyzes input audio to generate a secondary harmonic voice using sine wave oscillators. The generated voice can be mixed with the original or played solo, creating a chorus effect. It's CPU intensive and operates within a specific frequency range.

**Highlights:** Harmonic analysis of input audio, Sine wave oscillator synthesis, Adjustable chorus effect, Second voice generation, AUV3 plugin support

**Features:** Vision Pro support

**In-app purchases:** none


### Multiband Haas Effect

[App page](https://appshunter.io/ios/app/multiband-haas-effect/id1526429747)

This audio plugin enhances stereo width by applying micro-delays to specific frequency bands. It creates a spacious sound while preserving bass impact and avoiding artificial treble. Adjust crossover frequencies and delay settings for each band to achieve desired stereo expansion.

**Highlights:** Multiband stereo width enhancement, Adjustable crossover frequencies, Independent Haas delay per band, Preserves bass impact, Avoids artificial treble, Mono to stereo conversion

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sirens' Chor free?

Sirens' Chor costs $3.99, with no in-app purchases.

### Is Multiband Haas Effect free?

Multiband Haas Effect costs $5.99, with no in-app purchases.

### Which has better reviews, Sirens' Chor or Multiband Haas Effect?

Sirens' Chor and Multiband Haas Effect are both rated 4.0 out of 5 on the App Store, from 2 and 5 ratings respectively.

### Do Sirens' Chor or Multiband Haas Effect have ads?

Neither Sirens' Chor nor Multiband Haas Effect shows ads.

### Which is updated more often, Sirens' Chor or Multiband Haas Effect?

Sirens' Chor ships an update every 39 months, and Multiband Haas Effect every 3 weeks. Most recently, Sirens' Chor was updated on October 6, 2026 and Multiband Haas Effect on September 30, 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.*