# 水质多参数APP vs 环境哨兵

The clearest difference is update cadence: 环境哨兵 at every 3 weeks against 水质多参数APP's every 7 months. 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.

水质多参数APP ships an update every 7 months, 环境哨兵 every 3 weeks. The most recent releases landed on July 1, 2026 and August 13, 2026 respectively.

## The numbers

| Metric | 水质多参数APP | 环境哨兵 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Size | 29 MB | 23 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen Standards Scientific Instrument Co.,Ltd.](https://appshunter.io/developer/1194436536) | [VISPEK](https://appshunter.io/developer/1447793884) |

## What reviewers say

### 水质多参数APP

[App page](https://appshunter.io/ios/app/app/id1450483863)

**Features:** macOS Compatibility

**In-app purchases:** none


### 环境哨兵

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 水质多参数APP free?

水质多参数APP is free to download, with no in-app purchases.

### Is 环境哨兵 free?

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

### Do 水质多参数APP or 环境哨兵 have ads?

Neither 水质多参数APP nor 环境哨兵 shows ads.

### Which is updated more often, 水质多参数APP or 环境哨兵?

水质多参数APP ships an update every 7 months, and 环境哨兵 every 3 weeks. Most recently, 水质多参数APP was updated on July 1, 2026 and 环境哨兵 on August 13, 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.*