# Heat Index vs D4D

The clearest difference is device support: Heat Index at 2 against D4D's —. Heat Index also leads on iOS requirement (11.0 vs 13.4). On price 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.

## The numbers

| Metric | Heat Index | D4D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/heat-index/id1435924236/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 6 months | — |
| Monetization | Free | — |
| Size | 12 MB | 36 MB |
| Requires iOS | **11.0** | 13.4 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Thai Meteorological Department](https://appshunter.io/developer/904197426) | [Chakrit Chotamonsak](https://appshunter.io/developer/1208089430) |

## What reviewers say

### Heat Index

[App page](https://appshunter.io/ios/app/heat-index/id1435924236)

This app displays the heat index for various locations, considering both temperature and humidity. It provides information on potential health impacts, recommendations, and forecasts at the sub-district level to help users stay safe during hot weather.

**Highlights:** Heat index calculation, Location-based data, Health impact information, Recommendations for hot weather, Heat index forecasts, Sub-district level data

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

**In-app purchases:** none


### D4D

[App page](https://appshunter.io/ios/app/d4d/id6479576332)

**In-app purchases:** none


## Frequently asked questions

### Is Heat Index free?

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

### Is D4D free?

D4D is free to download, with no in-app purchases.

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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.*