# Air Quality Cat vs Pollution

The clearest difference is in-app purchases: Air Quality Cat at none against Pollution's 10. Air Quality Cat also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.6). Pollution's advantage is update cadence (every 3 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Pollution sells 10 in-app purchases, starting at $1.19 per 7 days. Air Quality Cat asks for nothing beyond the download.

Air Quality Cat ships an update every 3 months, Pollution every 3 weeks. The most recent releases landed on June 2, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Air Quality Cat | Pollution |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (18 ratings)](https://appshunter.io/ios/app/pollution-pollen-widget/id1609071301/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 122 MB | 144 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guizhou Oupeike Technology Co., Ltd.](https://appshunter.io/developer/1251301224) | [Stolanapp](https://appshunter.io/developer/1833017712) |

## What reviewers say

### Air Quality Cat

[App page](https://appshunter.io/ios/app/air-quality-cat/id1477795884)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pollution

[App page](https://appshunter.io/ios/app/pollution-pollen-widget/id1609071301)

Track real-time air quality and pollution levels in your area. Get detailed pollutant breakdowns, hourly and multi-day forecasts, and health recommendations to make informed decisions about your environment and well-being.

**Highlights:** Real-time Air Quality Index (AQI), Detailed pollutant breakdown, Hourly and 4-day forecasts, Smart notifications, Health recommendations, User-friendly design

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Umbrella - Premium | $1.19 | per 7 days |
| Umbrella - Premium | $2.19 | per 7 days |
| Air Quality Index - Premium | $2.29 | per month |
| Air Quality Premium Discount | $3.99 | per year |
| Umbrella - Premium | $4.29 | per month |
| Umbrella - Premium | $4.99 | per month |
| Air Quality Index - Premium | $5.69 | per year |
| Umbrella - Premium | $5.69 | per year |
| Air Quality Index - Premium | $11.49 | per year |
| Air Quality Index - Premium | $11.49 | per year |


## Frequently asked questions

### Is Air Quality Cat free?

Air Quality Cat is free to download, with no in-app purchases.

### Is Pollution free?

Pollution is free to download, with in-app purchases available.

### Do Air Quality Cat or Pollution have ads?

Pollution shows ads; Air Quality Cat does not.

### Which is updated more often, Air Quality Cat or Pollution?

Air Quality Cat ships an update every 3 months, and Pollution every 3 weeks. Most recently, Air Quality Cat was updated on June 2, 2026 and Pollution on September 23, 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.*