# Air4Thai vs TMD Lightning warning system

The clearest difference is iOS requirement: TMD Lightning warning system at 12.4 against Air4Thai's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Air4Thai ships an update every 4 weeks, TMD Lightning warning system every 2 months. The most recent releases landed on November 12, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Air4Thai | TMD Lightning warning system |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/air4thai/id594762042/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 26.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 40 MB | 101 MB |
| Requires iOS | 15.6 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Pollution Control Department, Thailand](https://appshunter.io/developer/966167337) | [Thai Meteorological Department](https://appshunter.io/developer/904197426) |

## What reviewers say

### Air4Thai

[App page](https://appshunter.io/ios/app/air4thai/id594762042)

This app provides hourly and daily air quality index reports for Thailand, with data from PCD monitoring stations. It offers 7-day graphs and maps to inform the public, especially during haze crises.

**Highlights:** Hourly air quality data, Daily air quality reports, 7-day air quality graphs, Air quality maps, Data from PCD monitoring stations, Haze crisis information

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

**In-app purchases:** none


### TMD Lightning warning system

[App page](https://appshunter.io/ios/app/tmd-lightning-warning-system/id1510905216)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Air4Thai free?

Air4Thai is free to download, with no in-app purchases.

### Is TMD Lightning warning system free?

TMD Lightning warning system is free to download, with no in-app purchases.

### Do Air4Thai or TMD Lightning warning system have ads?

Neither Air4Thai nor TMD Lightning warning system shows ads.

### Which is updated more often, Air4Thai or TMD Lightning warning system?

Air4Thai ships an update every 4 weeks, and TMD Lightning warning system every 2 months. Most recently, Air4Thai was updated on November 12, 2026 and TMD Lightning warning system on November 7, 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.*