# 环境哨兵 vs 百越铜鼓

The clearest difference is iOS requirement: 环境哨兵 at 11.0 against 百越铜鼓's 13.0. On price, ads, in-app purchases and device support 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 | 环境哨兵 | 百越铜鼓 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 23 MB | 26 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vispek Co., Ltd](https://appshunter.io/developer/1447793884) | [其诺 吕](https://appshunter.io/developer/1881180068) |

## What reviewers say

### 环境哨兵

[App page](https://appshunter.io/ios/app/id6445802438)

**Features:** macOS Compatibility

**In-app purchases:** none


### 百越铜鼓

[App page](https://appshunter.io/ios/app/id6760397207)

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

**In-app purchases:** none


## Frequently asked questions

### Is 环境哨兵 free?

环境哨兵 is free to download, with no in-app purchases.

### Is 百越铜鼓 free?

百越铜鼓 is free to download, with no in-app purchases.

### Do 环境哨兵 or 百越铜鼓 have ads?

Neither 环境哨兵 nor 百越铜鼓 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.*