# UVmeter vs 紫外線予報 UV

The clearest difference is review sentiment: UVmeter at 43% against 紫外線予報 UV's 0%. UVmeter also leads on ratings volume (84 vs 1) and monetization model (ad-supported vs free with in-app purchases). 紫外線予報 UV's advantage is rating (5.0 vs 4.2) and iOS requirement (15.6 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. UVmeter sells 2 one-off in-app purchases and 紫外線予報 UV sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

紫外線予報 UV holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: UVmeter has 84 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 43% of UVmeter's written reviews are positive against 0% of 紫外線予報 UV's, so the app with the better star average is not the one people write more warmly about.

UVmeter ships an update every 3 weeks, 紫外線予報 UV every 6 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | UVmeter | 紫外線予報 UV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (84 ratings)](https://appshunter.io/ios/app/uvmeter-uv-index-and-forecast/id662827178/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uv/id1529084441/reviews)** |
| Number of ratings | **84** | 1 |
| Positive reviews | **43.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 82 MB | 68 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MORETHAN APPS](https://appshunter.io/developer/473001840) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## What reviewers say

### UVmeter

[App page](https://appshunter.io/ios/app/uvmeter-uv-index-and-forecast/id662827178)

Monitor real-time and forecasted UV index levels for your location. Get personalized recommendations for sun protection, including required equipment and sunblock information, to safeguard your skin from harmful UV exposure.

**Highlights:** Real-time UV index display, Hourly UV forecast, Protection recommendations, Required equipment information, Sunblock details (SPF, PA), Sunburn time estimation, UV MAX time

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | one-time |
| Buy me a coffee | $2.99 | one-time |

**What reviewers like**

- 👍 Simple and easy-to-use interface
- ⚡ Quick real-time UV index readings
- 📍 Automatic location detection
- ⌚ Apple Watch integration
- 💡 Helpful sun protection recommendations

**What reviewers complain about**

- 🐛 Frequent crashes on startup
- ❌ Data unavailable for many locations
- 📍 Cannot manually change or select locations
- 📺 Excessive ads and promotional links
- 🔌 Unreliable connectivity issues

**Reported bugs**

- App crashes immediately upon opening
- Barometer feature crashes the app
- Cannot retrieve UV data from server
- Location services malfunction
- Watch app not available despite update claims

**Requested features**

- iOS widgets support
- Multiple location tracking
- Hourly and daily UV forecasts
- Historical UV data throughout the day
- Push notifications for UV level changes


### 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 UVmeter free?

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

### Is 紫外線予報 UV free?

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

### Which has better reviews, UVmeter or 紫外線予報 UV?

紫外線予報 UV is rated higher. UVmeter averages 4.2 out of 5 from 84 ratings, while 紫外線予報 UV averages 5.0 from 1 ratings.

### Do UVmeter or 紫外線予報 UV have ads?

Both UVmeter and 紫外線予報 UV show ads.

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

UVmeter ships an update every 3 weeks, and 紫外線予報 UV every 6 weeks. Most recently, UVmeter was updated on November 6, 2026 and 紫外線予報 UV 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.*