# 福岡県PM2.5・大気環境速報 vs O2Quality

The clearest difference is ads: O2Quality at none against 福岡県PM2.5・大気環境速報's shown. 福岡県PM2.5・大気環境速報's advantage is iOS requirement (15.0 vs 27.0). On price, update cadence, 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.

福岡県PM2.5・大気環境速報 ships an update every 7 months, O2Quality every 5 months. Both last shipped on September 22, 2026.

## The numbers

| Metric | 福岡県PM2.5・大気環境速報 | O2Quality |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | — | Free |
| Size | 13 MB | 11 MB |
| Requires iOS | **15.0** | 27.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [NISHI TAKASHI](https://appshunter.io/developer/837194947) | [Tomohiko Shimizu](https://appshunter.io/developer/436129129) |

## What reviewers say

### 福岡県PM2.5・大気環境速報

[App page](https://appshunter.io/ios/app/pm25/id1257641427)

**Features:** macOS Compatibility

**In-app purchases:** none


### O2Quality

[App page](https://appshunter.io/ios/app/o2quality/id1570058656)

Provides real-time air quality information based on US and European Air Quality Index (AQI) standards. It forecasts pollutant levels for up to five days, including carbon monoxide, ozone, nitrogen dioxide, sulfur dioxide, PM2.5, and PM10.

**Highlights:** Real-time AQI reporting, US and European AQI standards, Forecasts for 6 pollutants, 5-day pollutant forecasts, Color-coded risk levels, Pollutant concentration data

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 福岡県PM2.5・大気環境速報 free?

福岡県PM2.5・大気環境速報 is free to download, with no in-app purchases.

### Is O2Quality free?

O2Quality is free to download, with no in-app purchases.

### Do 福岡県PM2.5・大気環境速報 or O2Quality have ads?

福岡県PM2.5・大気環境速報 shows ads; O2Quality does not.

### Which is updated more often, 福岡県PM2.5・大気環境速報 or O2Quality?

福岡県PM2.5・大気環境速報 ships an update every 7 months, and O2Quality every 5 months. Most recently, 福岡県PM2.5・大気環境速報 was updated on September 22, 2026 and O2Quality on September 22, 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.*