# 准音 vs HarmonicaBar

The clearest difference is device support: HarmonicaBar at 3 against 准音's 1. HarmonicaBar also leads on iOS requirement (15.0 vs 18.5). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 准音 | HarmonicaBar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 10 MB | 9 MB |
| Requires iOS | 18.5 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [凯 王](https://appshunter.io/developer/1824464680) | [SHAN HUANG](https://appshunter.io/developer/1883372114) |

## What reviewers say

### 准音

[App page](https://appshunter.io/ios/app/id6754048367)

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

**In-app purchases:** none


### HarmonicaBar

[App page](https://appshunter.io/ios/app/harmonicabar/id6766516735)

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

**In-app purchases:** none


## Frequently asked questions

### Is 准音 free?

准音 is free to download, with no in-app purchases.

### Is HarmonicaBar free?

HarmonicaBar is free to download, with no in-app purchases.

### Do 准音 or HarmonicaBar have ads?

Neither 准音 nor HarmonicaBar shows ads.

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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.*