# Pollution vs AQI Index

The clearest difference is ratings volume: Pollution at 19 against AQI Index's 2. Pollution also leads on iOS requirement (15.6 vs 17.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Pollution sells 10 in-app purchases, starting at $1.19 per 7 days and AQI Index sells 8 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Pollution against 5.0 for AQI Index. That said, the two scores are not equally well evidenced: Pollution has 19 ratings behind it against 2, so its average is the more settled of the two.

Pollution ships an update every 3 weeks, AQI Index every 4 weeks. The most recent releases landed on October 27, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Pollution | AQI Index |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (19 ratings)](https://appshunter.io/ios/app/pollution-pollen-widget/id1609071301/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/aqi-index/id6474164756/reviews)** |
| Number of ratings | **19** | 2 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 144 MB | 100 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stolanapp](https://appshunter.io/developer/1833017712) | [nguyen thanh](https://appshunter.io/developer/1481436893) |

## What reviewers say

### 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 |


### AQI Index

[App page](https://appshunter.io/ios/app/aqi-index/id6474164756)

Provides real-time global air quality data, covering over 130 countries and 30,000 stations. Offers health recommendations and pollution rankings for cities worldwide. Ideal for sensitive individuals and outdoor enthusiasts.

**Highlights:** Real-time global air quality map, Health recommendations, Worldwide pollution rankings, Sensitive group information, Extensive sensor network coverage

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Plan | $0.99 | per month |
| Three Months VIP | $1.99 | per 3 months |
| Premium Half-Year Plan | $2.99 | per 6 months |
| Premium Annual Plan | $4.99 | per year |
| One Month VIP | $4.99 | per month |
| Six Months VIP | $24.99 | per 6 months |
| 1 Year VIP | $49.99 | per year |
| No ads Pack | $7.99 | one-time |


## Frequently asked questions

### Is Pollution free?

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

### Is AQI Index free?

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

### Which has better reviews, Pollution or AQI Index?

AQI Index is rated higher. Pollution averages 4.9 out of 5 from 19 ratings, while AQI Index averages 5.0 from 2 ratings.

### Do Pollution or AQI Index have ads?

Both Pollution and AQI Index show ads.

### Which is updated more often, Pollution or AQI Index?

Pollution ships an update every 3 weeks, and AQI Index every 4 weeks. Most recently, Pollution was updated on October 27, 2026 and AQI Index on October 14, 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.*