# カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ vs O2Quality

The clearest difference is ads: O2Quality at none against カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！'s shown. O2Quality also leads on monetization model (free vs ad-supported). カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！'s advantage is update cadence (every 5 days vs every 4 months) and iOS requirement (15.6 vs 27.0). On price, review sentiment, 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.

カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ ships an update every 5 days, O2Quality every 4 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ | O2Quality |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 4 months |
| Monetization | Ad-supported | **Free** |
| Size | 31 MB | 11 MB |
| Requires iOS | **15.6** | 27.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [yoshihito sakagami](https://appshunter.io/developer/1112518506) | [Tomohiko Shimizu](https://appshunter.io/developer/436129129) |

## What reviewers say

### カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！

[App page](https://appshunter.io/ios/app/id1116035887)

This app helps manage indoor humidity to combat mold, dust mites, and viruses. It provides real-time status, advice on humidity control, and recommended settings for air conditioners and humidifiers. Share information and learn more about these common household issues.

**Highlights:** Mold, dust mite, and virus status meters, Humidity control advice, Recommended AC and humidifier settings, Current temperature and humidity display, Mold and virus knowledge base, Social sharing of environmental data

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

**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 カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ free?

カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ is free to download, with no in-app purchases.

### Is O2Quality free?

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

### Do カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ or O2Quality have ads?

カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ shows ads; O2Quality does not.

### Which is updated more often, カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ or O2Quality?

カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ ships an update every 5 days, and O2Quality every 4 months. Most recently, カビ・ウィルス速報！ 〜 住居の健康を増進するアプリ！ was updated on November 6, 2026 and O2Quality on November 3, 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.*