# 行動水情 vs 臺北市行動防災

The clearest difference is update cadence: 行動水情 at every 11 days against 臺北市行動防災's every 2 months. 行動水情 also leads on iOS requirement (16.0 vs 26.0). 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.

行動水情 ships an update every 11 days, 臺北市行動防災 every 2 months. The most recent releases landed on September 23, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 行動水情 | 臺北市行動防災 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 29.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 months |
| Size | 109 MB | 82 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [SanChuanCloud](https://appshunter.io/developer/1761292478) | [臺北市政府](https://appshunter.io/developer/376788741) |

## What reviewers say

### 行動水情

[App page](https://appshunter.io/ios/app/id487536302)

**Features:** Vision Pro support

**In-app purchases:** none


### 臺北市行動防災

[App page](https://appshunter.io/ios/app/id547553713)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 行動水情 free?

行動水情 is free to download, with no in-app purchases.

### Is 臺北市行動防災 free?

臺北市行動防災 is free to download, with no in-app purchases.

### Do 行動水情 or 臺北市行動防災 have ads?

Neither 行動水情 nor 臺北市行動防災 shows ads.

### Which is updated more often, 行動水情 or 臺北市行動防災?

行動水情 ships an update every 11 days, and 臺北市行動防災 every 2 months. Most recently, 行動水情 was updated on September 23, 2026 and 臺北市行動防災 on October 8, 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.*