# 台灣空污警報 vs 積水通

The clearest difference is in-app purchases: 積水通 at none against 台灣空污警報's 1. 積水通 also leads on ads (none vs shown) and update cadence (every 9 days vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 台灣空污警報 sells 1 one-off in-app purchase. 積水通 asks for nothing beyond the download.

台灣空污警報 ships an update monthly, 積水通 every 9 days. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 台灣空污警報 | 積水通 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (14 ratings)](https://appshunter.io/ios/app/id1362015277/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 9 days** |
| Size | 27 MB | 35 MB |
| Requires iOS | 16.1 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DoItWell Application Ltd](https://appshunter.io/developer/505381716) | [CHIOU WEI CHUNG](https://appshunter.io/developer/6778630838) |

## What reviewers say

### 台灣空污警報

[App page](https://appshunter.io/ios/app/id1362015277)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 贊助方案 (回饋服務營運期間之去廣告功能) | $2.99 | one-time |


### 積水通

[App page](https://appshunter.io/ios/app/id6781602349)

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

**In-app purchases:** none


## Frequently asked questions

### Is 台灣空污警報 free?

台灣空污警報 is free to download, with in-app purchases available.

### Is 積水通 free?

積水通 is free to download, with no in-app purchases.

### Do 台灣空污警報 or 積水通 have ads?

台灣空污警報 shows ads; 積水通 does not.

### Which is updated more often, 台灣空污警報 or 積水通?

台灣空污警報 ships an update monthly, and 積水通 every 9 days. Most recently, 台灣空污警報 was updated on October 24, 2026 and 積水通 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.*