# 防汛E vs 水文水资源

The clearest difference is iOS requirement: 水文水资源 at 8.0 against 防汛E's 12.0. On price, update cadence, ads 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.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 19, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 防汛E | 水文水资源 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 56 MB | 32 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Shaanxi Shanqingshuixiu Information Technology Co. LTD](https://appshunter.io/developer/1437336464) | [武汉海昌信息技术有限公司](https://appshunter.io/developer/1050059214) |

## What reviewers say

### 防汛E

[App page](https://appshunter.io/ios/app/e/id1569571714)

**Features:** macOS Compatibility

**In-app purchases:** none


### 水文水资源

[App page](https://appshunter.io/ios/app/id6448164950)

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

**In-app purchases:** none


## Frequently asked questions

### Is 防汛E free?

防汛E is free to download, with no in-app purchases.

### Is 水文水资源 free?

水文水资源 is free to download, with no in-app purchases.

### Do 防汛E or 水文水资源 have ads?

Neither 防汛E nor 水文水资源 shows ads.

### Which is updated more often, 防汛E or 水文水资源?

防汛E ships an update fortnightly, and 水文水资源 fortnightly. Most recently, 防汛E was updated on September 19, 2026 and 水文水资源 on September 20, 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.*