# Harmonica Simulator Free vs Sirens' Chor

The clearest difference is review sentiment: Sirens' Chor at 100% against Harmonica Simulator Free's 0%. Sirens' Chor also leads on rating (4.0 vs 3.0). Harmonica Simulator Free's advantage is price (Free vs $3.99) and update cadence (every 6 months vs every 39 months). On ads, in-app purchases and device support there is nothing between them.

Harmonica Simulator Free is free to download; Sirens' Chor costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sirens' Chor holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews point the same way: 0% of Harmonica Simulator Free's written reviews are positive against 100% of Sirens' Chor's.

Harmonica Simulator Free ships an update every 6 months, Sirens' Chor every 39 months. The most recent releases landed on August 21, 2026 and June 21, 2026 respectively.

## The numbers

| Metric | Harmonica Simulator Free | Sirens' Chor |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [3.0 (6 ratings)](https://appshunter.io/ios/app/harmonica-simulator-free/id960898478/reviews) | **[4.0 (2 ratings)](https://appshunter.io/ios/app/sirens-chor-synth-chorus/id1497361812/reviews)** |
| Number of ratings | **6** | 2 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 39 months |
| Monetization | **Free** | Paid |
| Size | 71 MB | 11 MB |
| Requires iOS | **8.0** | 10.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SENIOR ELECTRON LLC](https://appshunter.io/developer/939471614) | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) |

## What reviewers say

### Harmonica Simulator Free

[App page](https://appshunter.io/ios/app/harmonica-simulator-free/id960898478)

This application offers a realistic 10-hole harmonica simulation with authentic studio-quality sound. It features a variety of rhythms, chords, and the ability to simulate both blowing and suction, making it easy to use for creating music.

**Highlights:** 10-hole standard harmonica simulation, Real studio-quality sound, Includes chords and rhythms, Simulates blow and suction, Adjustable rhythm speed, Transpose from -20 to +20%

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

**In-app purchases:** none


### 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

**In-app purchases:** none


## Frequently asked questions

### Is Harmonica Simulator Free free?

Harmonica Simulator Free is free to download, with no in-app purchases.

### Is Sirens' Chor free?

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

### Which has better reviews, Harmonica Simulator Free or Sirens' Chor?

Sirens' Chor is rated higher. Harmonica Simulator Free averages 3.0 out of 5 from 6 ratings, while Sirens' Chor averages 4.0 from 2 ratings.

### Do Harmonica Simulator Free or Sirens' Chor have ads?

Neither Harmonica Simulator Free nor Sirens' Chor shows ads.

### Which is updated more often, Harmonica Simulator Free or Sirens' Chor?

Harmonica Simulator Free ships an update every 6 months, and Sirens' Chor every 39 months. Most recently, Harmonica Simulator Free was updated on August 21, 2026 and Sirens' Chor on June 21, 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.*