# インフルエンザ予報計 vs 紫外線予報 UV

The clearest difference is review sentiment: インフルエンザ予報計 at 50% against 紫外線予報 UV's 0%. インフルエンザ予報計 also leads on in-app purchases (none vs 4). 紫外線予報 UV's advantage is update cadence (every 6 weeks vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 紫外線予報 UV sells 4 one-off in-app purchases. インフルエンザ予報計 asks for nothing beyond the download.

インフルエンザ予報計 ships an update every 5 months, 紫外線予報 UV every 6 weeks. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | インフルエンザ予報計 | 紫外線予報 UV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uv/id1529084441/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 68 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Izaki](https://appshunter.io/developer/511591595) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## What reviewers say

### インフルエンザ予報計

[App page](https://appshunter.io/ios/app/id733300038)

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

**In-app purchases:** none


### 紫外線予報 UV

[App page](https://appshunter.io/ios/app/uv/id1529084441)

This app provides hourly UV index forecasts and analysis maps, making it easy to check UV radiation levels. It offers current location UV information, daily UV data, and quick access to national weather conditions.

**Highlights:** Hourly UV index forecasts, Analysis maps, Current location UV info, Daily UV data, National weather conditions

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| 開発者応援募金 | $1.99 | one-time |
| Coffee (Large) | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


## Frequently asked questions

### Is インフルエンザ予報計 free?

インフルエンザ予報計 is free to download, with no in-app purchases.

### Is 紫外線予報 UV free?

紫外線予報 UV is free to download, with in-app purchases available.

### Do インフルエンザ予報計 or 紫外線予報 UV have ads?

Both インフルエンザ予報計 and 紫外線予報 UV show ads.

### Which is updated more often, インフルエンザ予報計 or 紫外線予報 UV?

インフルエンザ予報計 ships an update every 5 months, and 紫外線予報 UV every 6 weeks. Most recently, インフルエンザ予報計 was updated on October 23, 2026 and 紫外線予報 UV on October 29, 2026.

---

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