# AQI vs 2 kool

The clearest difference is rating: 2 kool at 5.0 against AQI's 3.4. AQI's advantage is chart position (#66 vs unranked) and ratings volume (16 vs 2). 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.

2 kool holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: AQI has 16 ratings behind it against 2, so its average is the more settled of the two.

## The numbers

| Metric | AQI | 2 kool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (16 ratings)](https://appshunter.io/ios/app/aqi/id1439684571/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/2-kool/id6758806465/reviews)** |
| Number of ratings | **16** | 2 |
| Positive reviews | 41.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free | Free |
| Best chart rank | **#66** | — |
| Size | 208 MB | 3 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, Mac, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Purelogic Labs India Private Limited](https://appshunter.io/developer/704067891) | [John Loughlin](https://appshunter.io/developer/1716027167) |

## What reviewers say

### AQI

[App page](https://appshunter.io/ios/app/aqi/id1439684571)

**Currently charting:** #66 Top Free · Weather (US App Store)

This app provides real-time air quality index and weather data from local monitoring stations. It alerts you to air quality levels and helps you plan outdoor activities. Track pollutants like PM2.5 and CO for healthier living.

**Highlights:** Real-time and historic air quality data, Global AQI map with 10,500+ stations, Air quality monitor dashboard, On-the-go AQI widget, Health advice based on AQI, Live world air quality ranking

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### 2 kool

[App page](https://appshunter.io/ios/app/2-kool/id6758806465)

Instantly see Celsius and Fahrenheit temperatures side-by-side for multiple locations. Avoid awkward translation moments with a clear, readable design and fast city search. Perfect for families and friends across different regions.

**Highlights:** Side-by-side Celsius and Fahrenheit, Current temperature and min/max range, Fast worldwide city search, Current location option, Per-location C/F swap, Light and dark mode, Home and Lock Screen widgets

**In-app purchases:** none


## Frequently asked questions

### Is AQI free?

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

### Is 2 kool free?

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

### Which has better reviews, AQI or 2 kool?

2 kool is rated higher. AQI averages 3.4 out of 5 from 16 ratings, while 2 kool averages 5.0 from 2 ratings.

### Do AQI or 2 kool have ads?

Neither AQI nor 2 kool shows ads.

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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.*