# Sirens' Chor vs SimplyFlange

The clearest difference is rating: SimplyFlange at 5.0 against Sirens' Chor's 4.0. SimplyFlange also leads on update cadence (every 9 days vs every 39 months) and price ($0.99 vs $3.99). Sirens' Chor's advantage is iOS requirement (10.0 vs 16.6). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

Sirens' Chor costs $3.99 and SimplyFlange $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SimplyFlange holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Sirens' Chor ships an update every 39 months, SimplyFlange every 9 days. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Sirens' Chor | SimplyFlange |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/sirens-chor-synth-chorus/id1497361812/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simplyflange/id1554960150/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 9 days** |
| Monetization | Paid | Paid |
| Size | 11 MB | 5 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) | [Brad Howes](https://appshunter.io/developer/430573224) |

## 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


### SimplyFlange

[App page](https://appshunter.io/ios/app/simplyflange/id1554960150)

This audio effect app provides a straightforward flange effect for a retro sound. It functions as an AUv3 app extension, compatible with hosts like AUM, Cubasis, and GarageBand.

**Highlights:** Retro flange audio effect, AUv3 app extension, Compatible with AUM, Cubasis, GarageBand, Standalone app functionality, Simple and straightforward interface

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sirens' Chor free?

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

### Is SimplyFlange free?

SimplyFlange costs $0.99, with no in-app purchases.

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

SimplyFlange is rated higher. Sirens' Chor averages 4.0 out of 5 from 2 ratings, while SimplyFlange averages 5.0 from 1 ratings.

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

Neither Sirens' Chor nor SimplyFlange shows ads.

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

Sirens' Chor ships an update every 39 months, and SimplyFlange every 9 days. Most recently, Sirens' Chor was updated on October 24, 2026 and SimplyFlange on October 4, 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.*