# 江西灾防中心 vs 51知灾害

The clearest difference is device support: 51知灾害 at 3 against 江西灾防中心's —. 51知灾害 also leads on iOS requirement (9.0 vs 12.2). 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 | 江西灾防中心 | 51知灾害 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 4 months |
| Monetization | — | Free |
| Size | 34 MB | 53 MB |
| Requires iOS | 12.2 | **9.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [尔 胡](https://appshunter.io/developer/1504653309) | [钦荣 翁](https://appshunter.io/developer/1278827536) |

## What reviewers say

### 江西灾防中心

[App page](https://appshunter.io/ios/app/id1542554502)

**In-app purchases:** none


### 51知灾害

[App page](https://appshunter.io/ios/app/51/id1592935902)

This application provides comprehensive professional service modules. It has been comprehensively upgraded to offer enhanced functionality and user experience.

**Highlights:** Comprehensive professional service modules, Upgraded functionality, Enhanced user experience, Weather information services

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

**In-app purchases:** none


## Frequently asked questions

### Is 江西灾防中心 free?

江西灾防中心 is free to download, with no in-app purchases.

### Is 51知灾害 free?

51知灾害 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.*