# 紫外線予報 UV vs UVready

The clearest difference is review sentiment: UVready at 100% against 紫外線予報 UV's 0%. UVready also leads on in-app purchases (none vs 4) and update cadence (fortnightly vs every 6 weeks). 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. UVready asks for nothing beyond the download.

紫外線予報 UV ships an update every 6 weeks, UVready fortnightly. The most recent releases landed on September 25, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 紫外線予報 UV | UVready |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uv/id1529084441/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 68 MB | 8 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [hidehiko aihara](https://appshunter.io/developer/1178520609) | [Appetizer](https://appshunter.io/developer/515390190) |

## What reviewers say

### 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 |


### UVready

[App page](https://appshunter.io/ios/app/uvready/id6759196899)

Get instant UV index readings with a single tap. Understand current and hourly UV levels, receive personalized safe sun exposure times based on your skin type, and get alerts for changes. It's a quick and simple way to protect your skin year-round.

**Highlights:** Instant UV index check, Hourly UV forecast, Personalized safe exposure time, Intuitive emoji guidance, UV level change alerts, Instant sharing of UV conditions

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

**In-app purchases:** none


## Frequently asked questions

### Is 紫外線予報 UV free?

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

### Is UVready free?

UVready is free to download, with no in-app purchases.

### Do 紫外線予報 UV or UVready have ads?

Both 紫外線予報 UV and UVready show ads.

### Which is updated more often, 紫外線予報 UV or UVready?

紫外線予報 UV ships an update every 6 weeks, and UVready fortnightly. Most recently, 紫外線予報 UV was updated on September 25, 2026 and UVready on October 5, 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.*