# 雷アラート vs WBGT

The clearest difference is review sentiment: WBGT at 83% against 雷アラート's 47%. 雷アラート's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. WBGT sells 4 one-off in-app purchases. 雷アラート asks for nothing beyond the download.

雷アラート ships an update every 2 months, WBGT every 6 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 雷アラート | WBGT |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 47.1% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 70 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [日本気象株式会社](https://appshunter.io/developer/517668176) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## What reviewers say

### 雷アラート

[App page](https://appshunter.io/ios/app/id842276970)

Receive timely alerts for approaching thunderstorms based on your location. Customize notification settings and view detailed雷雲 (raikumo - thundercloud) levels and intensity. Access radar maps and pinpoint weather forecasts.

**Highlights:** Location-based thunderstorm alerts, Customizable notification times, 雷雲 (raikumo) proximity levels, Thunderstorm intensity indicators, Real-time雷 (rai - thunder) radar, Pinpoint weather forecasts

**Features:** Vision Pro support

**In-app purchases:** none


### WBGT

[App page](https://appshunter.io/ios/app/wbgt/id1629786837)

This app helps you monitor the Heat Stroke Index (WBGT) based on temperature, humidity, and weather conditions. It provides hourly forecasts to aid in heatstroke prevention for outdoor activities and travel.

**Highlights:** Hourly WBGT forecasts, Current location WBGT, Nationwide WBGT, Heatstroke prevention guidance, Outdoor activity planning

**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 雷アラート free?

雷アラート is free to download, with no in-app purchases.

### Is WBGT free?

WBGT is free to download, with in-app purchases available.

### Do 雷アラート or WBGT have ads?

WBGT shows ads; 雷アラート does not.

### Which is updated more often, 雷アラート or WBGT?

雷アラート ships an update every 2 months, and WBGT every 6 weeks. Most recently, 雷アラート was updated on November 1, 2026 and WBGT on November 3, 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.*