# Forecast DClock vs Heat Index

The clearest difference is ads: Heat Index at none against Forecast DClock's shown. Heat Index also leads on update cadence (every 6 months vs every 52 months) and iOS requirement (11.0 vs 14.0). On price, in-app purchases and device support there is nothing between them.

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

Forecast DClock ships an update every 52 months, Heat Index every 6 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Forecast DClock | Heat Index |
| --- | --- | --- |
| 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 | Yes | **No** |
| Update frequency | Every 52 months | **Every 6 months** |
| Monetization | — | Free |
| Size | 8 MB | 12 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ramalingam Sivaramakrishnan](https://appshunter.io/developer/892706271) | [Thai Meteorological Department](https://appshunter.io/developer/904197426) |

## What reviewers say

### Forecast DClock

[App page](https://appshunter.io/ios/app/forecast-dclock-live/id1119040977)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Forecast DClock free?

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

### Is Heat Index free?

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

### Do Forecast DClock or Heat Index have ads?

Forecast DClock shows ads; Heat Index does not.

### Which is updated more often, Forecast DClock or Heat Index?

Forecast DClock ships an update every 52 months, and Heat Index every 6 months. Most recently, Forecast DClock was updated on October 5, 2026 and Heat Index on October 12, 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.*