# 熱中症予報計 vs 湿度計++

The clearest difference is in-app purchases: 熱中症予報計 at none against 湿度計++'s 4. 湿度計++'s advantage is update cadence (monthly vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 湿度計++ sells 4 one-off in-app purchases. 熱中症予報計 asks for nothing beyond the download.

熱中症予報計 ships an update every 5 months, 湿度計++ monthly. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | 熱中症予報計 | 湿度計++ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 35.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Monthly** |
| Size | 7 MB | 62 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Izaki](https://appshunter.io/developer/511591595) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## 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


### 湿度計++

[App page](https://appshunter.io/ios/app/plus-plus/id1633054315)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| アプリケーション開発者への応援募金 | $1.99 | one-time |
| Coffee (Large) | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


## 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 湿度計++ free?

湿度計++ is free to download, with in-app purchases available.

### Do 熱中症予報計 or 湿度計++ have ads?

Both 熱中症予報計 and 湿度計++ show ads.

### Which is updated more often, 熱中症予報計 or 湿度計++?

熱中症予報計 ships an update every 5 months, and 湿度計++ monthly. Most recently, 熱中症予報計 was updated on October 3, 2026 and 湿度計++ on September 29, 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.*