# PM2.5台灣 vs 雲林縣環境資訊整合APP

The clearest difference is review sentiment: 雲林縣環境資訊整合APP at 100% against PM2.5台灣's 17%. PM2.5台灣's advantage is update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (7.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PM2.5台灣 ships an update every 2 weeks, 雲林縣環境資訊整合APP every 5 weeks. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | PM2.5台灣 | 雲林縣環境資訊整合APP |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 9 MB | 71 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YEH TSUNG MING](https://appshunter.io/developer/324655388) | [Wang I Chuan](https://appshunter.io/developer/582187975) |

## What reviewers say

### PM2.5台灣

[App page](https://appshunter.io/ios/app/pm25/id990281102)

Stay informed about PM2.5 air quality in Taiwan. Receive custom notifications for high pollution levels and track real-time rankings across different regions.

**Highlights:** Real-time PM2.5 concentration tracking, Customizable pollution level notifications, Nationwide and regional rankings, Alerts for exceeding pollution thresholds, Daily time-based reminders

**Features:** macOS Compatibility

**In-app purchases:** none


### 雲林縣環境資訊整合APP

[App page](https://appshunter.io/ios/app/app/id1539121099)

Access real-time environmental data including air quality, industrial zone monitoring, and weather. Receive personalized push notifications for air quality alerts and dust events. Find information on environmental initiatives and resources.

**Highlights:** Real-time air quality monitoring, Dust event alerts, Industrial zone monitoring, Weather station data, Environmental initiative information, Personalized push notifications

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PM2.5台灣 free?

PM2.5台灣 is free to download, with no in-app purchases.

### Is 雲林縣環境資訊整合APP free?

雲林縣環境資訊整合APP is free to download, with no in-app purchases.

### Do PM2.5台灣 or 雲林縣環境資訊整合APP have ads?

Neither PM2.5台灣 nor 雲林縣環境資訊整合APP shows ads.

### Which is updated more often, PM2.5台灣 or 雲林縣環境資訊整合APP?

PM2.5台灣 ships an update every 2 weeks, and 雲林縣環境資訊整合APP every 5 weeks. Most recently, PM2.5台灣 was updated on October 20, 2026 and 雲林縣環境資訊整合APP on October 18, 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.*