# 水质多参数APP vs 3D FAN

The clearest difference is update cadence: 3D FAN at every 3 months against 水质多参数APP's every 7 months. 3D FAN also leads on iOS requirement (8.0 vs 12.0). 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.

水质多参数APP ships an update every 7 months, 3D FAN every 3 months. The most recent releases landed on July 1, 2026 and March 11, 2026 respectively.

## The numbers

| Metric | 水质多参数APP | 3D FAN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Size | 29 MB | 15 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen Standards Scientific Instrument Co.,Ltd.](https://appshunter.io/developer/1194436536) | [永泉 官](https://appshunter.io/developer/1615724563) |

## 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


### 3D FAN

[App page](https://appshunter.io/ios/app/3d-fan/id1509379359)

**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 3D FAN free?

3D FAN is free to download, with no in-app purchases.

### Do 水质多参数APP or 3D FAN have ads?

Neither 水质多参数APP nor 3D FAN shows ads.

### Which is updated more often, 水质多参数APP or 3D FAN?

水质多参数APP ships an update every 7 months, and 3D FAN every 3 months. Most recently, 水质多参数APP was updated on July 1, 2026 and 3D FAN on March 11, 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.*