# B vs NoiseDetect

The clearest difference is device support: B at 2 against NoiseDetect's —. B also leads on iOS requirement (13.0 vs 15.6). 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 | B | NoiseDetect |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 5 months | — |
| Size | 95 MB | 1 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Hon Cho International Trade Co., Ltd.](https://appshunter.io/developer/1232497891) | [松 刘](https://appshunter.io/developer/1875790792) |

## What reviewers say

### B

[App page](https://appshunter.io/ios/app/b-one/id1491640533)

**Features:** macOS Compatibility

**In-app purchases:** none


### NoiseDetect

[App page](https://appshunter.io/ios/app/noisedetect-sound-meter/id6760124098)

**In-app purchases:** none


## Frequently asked questions

### Is B free?

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

### Is NoiseDetect free?

NoiseDetect 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.*