Harmonica Simulator Free vs Sirens' Chor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Harmonica Simulator Free
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.
- 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%
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this is a special professional application that simulates the 10 hole real standard harmonica this app is completely different with other apps and i promise that you won't see any app like this with real sound , easy to use and real usage specially with accords and rhythms you can find many similar apps in app store , but the difference is this app has accords , rhythms and real sound that you can find is it the real harmonica or an app !! its free . try it ! just see the video below to be amazed !! https://www.youtube.com/watch?v=PfHZ6xDd7VM the app specifics are : - has up to 36 pop / oriental / turkish / arabic / iranian / western rhythm styles - has 12 accords that are used in this type of music - simulate both blow and suction that is used in real instrument - very easy to use - has ability to change the rhythm speed - transpose ability from -20 to +20 percents - real sound that is made in professional studio - 6 voice pads that has sound such as Scream.. OH... Applause... YEAH... voices
Sirens' Chor
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.
- Harmonic analysis of input audio
- Sine wave oscillator synthesis
- Adjustable chorus effect
- Second voice generation
- AUV3 plugin support
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This one is quite experimental and CPU heavy app! While working on my Chord Detector app I came up with the idea to play the found harmonics with sine wave oscillators so I can hear what the algorithm is hearing :) It turns out to be an interesting output that led me to creation of this audio effect app. What happens here is that the input is analysed for main harmonics in the range of 80Hz to 1500Hz. Then a series of sine wave oscillators are set to play those harmonics with the exact frequency and volume and their output is added to create a second voice. This second voice can then be mixed with the input to create some kind of chorus or played alone. All this is CPU heavy process so it should be used with care... Also to make this effect possible I had to use limited range 80Hz to 1500Hz so it is not suitable for every instrument and you have to keep that range in mind when producing. Some very fast volume and frequency changes are applied to the oscillators. The app is AUV3
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Harmonica Simulator Free | Sirens' Chor |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 3.0 (6 ratings) | 4.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 6 months — better | Every 39 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 10.0 |
| Further details — not scored | ||
| Size | 71 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | SENIOR ELECTRON LLC | Aleksandar Mlazev |
Customer experience
Harmonica Simulator Free
Sirens' Chor
In-app purchases
Harmonica Simulator Free
No in-app purchases
Sirens' Chor
No in-app purchases
Questions
Is Harmonica Simulator Free free?
Is Sirens' Chor free?
Which has better reviews, Harmonica Simulator Free or Sirens' Chor?
Do Harmonica Simulator Free or Sirens' Chor have ads?
Which is updated more often, Harmonica Simulator Free or Sirens' Chor?
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