# 熱中症予報計 vs 熱中症アラート(暑さ指数予測)

The clearest difference is ads: 熱中症アラート(暑さ指数予測) at none against 熱中症予報計's shown. 熱中症アラート(暑さ指数予測) also leads on update cadence (weekly vs every 5 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

熱中症予報計 ships an update every 5 months, 熱中症アラート(暑さ指数予測) weekly. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 熱中症予報計 | 熱中症アラート(暑さ指数予測) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 35.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Weekly** |
| Size | 7 MB | 25 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Izaki](https://appshunter.io/developer/511591595) | [Roku, K.K.](https://appshunter.io/developer/1797916780) |

## What reviewers say

### 熱中症予報計

[App page](https://appshunter.io/ios/app/id647598956)

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

**In-app purchases:** none


### 熱中症アラート(暑さ指数予測)

[App page](https://appshunter.io/ios/app/id6791687485)

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

**In-app purchases:** none


## Frequently asked questions

### Is 熱中症予報計 free?

熱中症予報計 is free to download, with no in-app purchases.

### Is 熱中症アラート(暑さ指数予測) free?

熱中症アラート(暑さ指数予測) is free to download, with no in-app purchases.

### Do 熱中症予報計 or 熱中症アラート(暑さ指数予測) have ads?

熱中症予報計 shows ads; 熱中症アラート(暑さ指数予測) does not.

### Which is updated more often, 熱中症予報計 or 熱中症アラート(暑さ指数予測)?

熱中症予報計 ships an update every 5 months, and 熱中症アラート(暑さ指数予測) weekly. Most recently, 熱中症予報計 was updated on October 3, 2026 and 熱中症アラート(暑さ指数予測) on October 1, 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.*