# 海豚卫士 vs 水库e管

The clearest difference is update cadence: 水库e管 at monthly against 海豚卫士's every 12 months. 海豚卫士's advantage is iOS requirement (9.0 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.

海豚卫士 ships an update every 12 months, 水库e管 monthly. The most recent releases landed on August 15, 2026 and August 21, 2026 respectively.

## The numbers

| Metric | 海豚卫士 | 水库e管 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Monthly** |
| Monetization | — | Free |
| Size | 95 MB | 264 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [福建四创软件有限公司](https://appshunter.io/developer/539380136) | [绍钢 江](https://appshunter.io/developer/1365400725) |

## What reviewers say

### 海豚卫士

[App page](https://appshunter.io/ios/app/id1522401648)

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

**In-app purchases:** none


### 水库e管

[App page](https://appshunter.io/ios/app/e/id1531242766)

This app provides property management services for small reservoirs. It offers efficient inspection tools for responsible personnel, along with features for monitoring rainfall, managing work orders, recording inspection logs, and accessing weather forecasts.

**Highlights:** Reservoir property management, Efficient inspection tools, Rainfall and weather monitoring, Work order management, Inspection log recording, Maintenance and repair functions

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

**In-app purchases:** none


## Frequently asked questions

### Is 海豚卫士 free?

海豚卫士 is free to download, with no in-app purchases.

### Is 水库e管 free?

水库e管 is free to download, with no in-app purchases.

### Do 海豚卫士 or 水库e管 have ads?

Neither 海豚卫士 nor 水库e管 shows ads.

### Which is updated more often, 海豚卫士 or 水库e管?

海豚卫士 ships an update every 12 months, and 水库e管 monthly. Most recently, 海豚卫士 was updated on August 15, 2026 and 水库e管 on August 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*