# 粤水安 vs 中大ZHONGDA

The clearest difference is update cadence: 中大ZHONGDA at every 6 days against 粤水安's monthly. 粤水安's advantage is iOS requirement (11.0 vs 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.

粤水安 ships an update monthly, 中大ZHONGDA every 6 days. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 粤水安 | 中大ZHONGDA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Size | 26 MB | 56 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [深圳市腾软科技有限公司](https://appshunter.io/developer/1480079909) | [Hangzhou Fabmagic Technology Inc.](https://appshunter.io/developer/1197833650) |

## What reviewers say

### 粤水安

[App page](https://appshunter.io/ios/app/id6453360809)

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

**In-app purchases:** none


### 中大ZHONGDA

[App page](https://appshunter.io/ios/app/zhongda/id6468903181)

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

**In-app purchases:** none


## Frequently asked questions

### Is 粤水安 free?

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

### Is 中大ZHONGDA free?

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

### Do 粤水安 or 中大ZHONGDA have ads?

Neither 粤水安 nor 中大ZHONGDA shows ads.

### Which is updated more often, 粤水安 or 中大ZHONGDA?

粤水安 ships an update monthly, and 中大ZHONGDA every 6 days. Most recently, 粤水安 was updated on October 10, 2026 and 中大ZHONGDA on October 12, 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.*