# HarmonyWiz vs Sirens' Chor

The clearest difference is rating: HarmonyWiz at 4.5 against Sirens' Chor's 4.0. HarmonyWiz also leads on update cadence (every 3 months vs every 39 months). Sirens' Chor's advantage is in-app purchases (none vs 5) and review sentiment (100% vs 69%). On ratings volume, ads, device support and iOS requirement there is nothing between them.

HarmonyWiz costs $9.99 and Sirens' Chor $3.99 up front. HarmonyWiz sells 5 one-off in-app purchases. Sirens' Chor asks for nothing beyond the download.

HarmonyWiz holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews complicate that: 69% of HarmonyWiz's written reviews are positive against 100% of Sirens' Chor's, so the app with the better star average is not the one people write more warmly about.

HarmonyWiz ships an update every 3 months, Sirens' Chor every 39 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | HarmonyWiz | Sirens' Chor |
| --- | --- | --- |
| Price | $9.99 | **$3.99** |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/harmonywiz/id629564112/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/sirens-chor-synth-chorus/id1497361812/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 69.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 39 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 137 MB | 11 MB |
| Requires iOS | **9.2** | 10.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wizdom Music LLC](https://appshunter.io/developer/377345351) | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) |

## What reviewers say

### HarmonyWiz

[App page](https://appshunter.io/ios/app/harmonywiz/id629564112)

This app generates multi-part harmony from a single musical line, offering harmonic analysis and figured bass notation. It includes editing tools, preset sound ensembles, and supports various harmonic styles. It's suitable for all ages, from beginners to professionals.

**Highlights:** Multi-part harmony generation, Harmonic analysis and figured bass, Expert editing tools, Multiple harmonic styles, Built-in and MIDI keyboards, SoundCloud sharing

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synth pack 1 | $0.99 | one-time |
| Guitar pack | $0.99 | one-time |
| Synth pack 2 | $0.99 | one-time |
| Wizdom acoustic 1 | $0.99 | one-time |
| Wizdom acoustic 2 | $0.99 | one-time |


### 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


## Frequently asked questions

### Is HarmonyWiz free?

HarmonyWiz costs $9.99, and also offers in-app purchases.

### Is Sirens' Chor free?

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

### Which has better reviews, HarmonyWiz or Sirens' Chor?

HarmonyWiz is rated higher. HarmonyWiz averages 4.5 out of 5 from 4 ratings, while Sirens' Chor averages 4.0 from 2 ratings.

### Do HarmonyWiz or Sirens' Chor have ads?

Neither HarmonyWiz nor Sirens' Chor shows ads.

### Which is updated more often, HarmonyWiz or Sirens' Chor?

HarmonyWiz ships an update every 3 months, and Sirens' Chor every 39 months. Most recently, HarmonyWiz was updated on October 24, 2026 and Sirens' Chor on October 24, 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.*