# AQI vs TN

The clearest difference is update cadence: AQI at weekly against TN's every 11 months. AQI also leads on review sentiment (42% vs 33%). TN's advantage is iOS requirement (13.0 vs 17.6). 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.

AQI ships an update weekly, TN every 11 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | AQI | TN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (16 ratings)](https://appshunter.io/ios/app/aqi/id1439684571/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | **41.9% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 11 months |
| Monetization | Free | Free |
| Size | 208 MB | 199 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Purelogic Labs India Private Limited](https://appshunter.io/developer/704067891) | [Rimes](https://appshunter.io/developer/1470204756) |

## What reviewers say

### AQI

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

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


### TN

[App page](https://appshunter.io/ios/app/tn-alert/id1559849577)

Receive timely weather alerts and advisories for specific areas based on forecasts. This app provides different sound notifications for various alert levels and can override silent mode for emergencies. Users can also submit feedback on flood risk alerts.

**Highlights:** Multi-hazard impact assessment, Weather forecast integration, Disseminates alerts and advisories, Customizable sound alerts for push notifications, Flood risk alerts with user feedback, Emergency alert override for silent mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AQI free?

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

### Is TN free?

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

### Do AQI or TN have ads?

Neither AQI nor TN shows ads.

### Which is updated more often, AQI or TN?

AQI ships an update weekly, and TN every 11 months. Most recently, AQI was updated on October 29, 2026 and TN on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*