# 精准分贝仪 vs MU

The clearest difference is device support: MU at 3 against 精准分贝仪's —. MU also leads on iOS requirement (9.0 vs 13.0). On price 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 | 精准分贝仪 | MU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 3 days |
| Size | 57 MB | 17 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [爱丽 周](https://appshunter.io/developer/1651181909) | [浩明 甄](https://appshunter.io/developer/6779027894) |

## What reviewers say

### 精准分贝仪

[App page](https://appshunter.io/ios/app/id6475716450)

**In-app purchases:** none


### MU

[App page](https://appshunter.io/ios/app/mu-22/id6786191145)

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

**In-app purchases:** none


## Frequently asked questions

### Is 精准分贝仪 free?

精准分贝仪 is free to download, with no in-app purchases.

### Is MU free?

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

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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.*