# 熱中症予報計 vs 熱中症アラート

The clearest difference is ads: 熱中症アラート at none against 熱中症予報計's shown. 熱中症アラート also leads on review sentiment (57% vs 35%) and iOS requirement (7.0 vs 15.6). 熱中症予報計's advantage is update cadence (every 5 months vs every 12 months). 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.

熱中症予報計 ships an update every 5 months, 熱中症アラート every 12 months. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 熱中症予報計 | 熱中症アラート |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 35.0% of reviews | **57.1% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 12 months |
| Monetization | — | Free |
| Size | 7 MB | 2 MB |
| Requires iOS | 15.6 | **7.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Izaki](https://appshunter.io/developer/511591595) | [日本気象株式会社](https://appshunter.io/developer/517668176) |

## 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

[App page](https://appshunter.io/ios/app/id836424089)

This app provides real-time heatstroke risk levels based on the heatstroke index. It offers notifications and advice from a weather mascot, with customizable settings for regions and alert thresholds. Data is updated every 10 minutes.

**Highlights:** Real-time heatstroke risk levels, Customizable notifications, Heatstroke index graph, Weather mascot advice, Region-specific settings, 10-minute data updates

**Features:** 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 free?

熱中症アラート is free to download, with no in-app purchases.

### Do 熱中症予報計 or 熱中症アラート have ads?

熱中症予報計 shows ads; 熱中症アラート does not.

### Which is updated more often, 熱中症予報計 or 熱中症アラート?

熱中症予報計 ships an update every 5 months, and 熱中症アラート every 12 months. Most recently, 熱中症予報計 was updated on October 3, 2026 and 熱中症アラート on October 13, 2026.

---

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