UV Index Widget - Worldwide
by Bjorn Jenssen
- Weather
- Free
- Rating
- 4.8
- 14.5K ratings · US storefront
- Top 28%among 97 Weather apps
- Last update
- Oct 9, 2026
- Version 14.1
- Size
- 141 MB
- Category
- Weather
- Tracked since
- Oct 9, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
UV Index Widget - Worldwide brings one of the most useful pieces of weather data, the UV Index, front and center. Use this app to track your UV exposure, help plan your day outside, and avoid burning. Perfect for planning your tanning routine.
UV Index Widget - Worldwide is a convenient app that lets you monitor the Sun’s radiation levels anywhere on Earth. It shows the current UV Index, today’s peak forecast, and a 7-day UV forecast. You can add the UV Index to your Home Screen via widgets, receive alerts when UV Index reaches specific levels, and automatically log the data to your Apple Health app.
The app instantly displays your current UV Index (UVI) in an easy-to-understand format. Just tap and hold to view today's highest UVI reading. You can also check the sunrise and sunset times, along with the moment when the UV Index peaks.
7-day hour-by-hour forecast:
The Forecast tab provides an hour-by-hour UVI prediction for the next 7 days.
My Skin:
In the My Skin section, select your skin type for tailored safety tips and recommendations. You can also monitor your sun exposure and receive alerts when there’s a high risk of sunburn. Additionally, the app tracks your Vitamin D production from sunlight and automatically syncs the data to your Apple Health app.
Places:
In the Places tab, you can select any location around the world to see its current UV radiation and a 7-day forecast. It's a great tool for checking the UV levels at your travel destination before you head out.
Widget:
The app offers a variety of Home Screen widgets and Lock Screen Widgets, designed for both your iPhone and Apple Watch. Choose from multiple options to customize your experience on the Home Screen, Today view and Apple Watch.
Notifications:
The app alerts you when the UV Index exceeds your specified threshold, sending a notification whenever your area's UV levels surpass that mark. It also warns you when you're at high risk of sunburn and reminds you to reapply sunscreen.
Apple Health app:
The app automatically logs your location's hourly UV Index and the vitamin D generated from sun exposure into the Apple Health app. Open Apple Health to review your UV exposure history and vitamin D data.
Apple Watch:
Monitor the UV Index directly from your watch. Tap and hold to view today's peak UVI, just like in the iOS app. The watch app also features a My Skin section and a 7-day hourly forecast. Additionally, you can always check the UVI right on your favorite watch face using the included UVI complications.
The app will work anywhere in the world, and is a perfect companion whether you are at home or travelling.
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Information about UV Index Widget - Worldwide subscription:
-At confirmation of purchase, or following the completion of a free-trial period, payment will be charged to your iTunes account.
- Yearly subscriptions are available.
- Payment will be charged to your iTunes account at confirmation of purchase.
- Your subscription will automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period.
- Your account will be charged for renewal within 24-hours prior to the end of the current subscription period. Automatic renewals will cost the same price you were originally charged for the subscription.
- You can manage your subscriptions and turn off auto-renewal by going to your Account Settings on the App Store after purchase.
-Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable
Terms of Use:
https://uv-index-worldwide.web.app/tos_bjorn_jenssen.html
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The UV Index scale used in this app conforms with international guidelines for UVI reporting established by the World Health Organization.
What’s new
Release notes for the latest version, as written by the developer.
Made for iPhone Duo
Open it and UV Index uses the whole display: the UV dial with today's weather, bars, sun protection and tomorrow beside it. In book mode the sun graph and dial fit each page, and closed, everything fits the outer display.
Redesigned My Skin
New cards that show what matters right now. The Sun Exposure card puts your time in the sun, your vitamin D in IU and your burn limit on one bar. While you track, the Safety card counts down to sunburn.
Redesigned Forecast
Clearer cards for today and tomorrow, with color-coded hourly bars, the weather for each hour, and when you'll need sun protection. The coming days are one tap away.
Redesigned Settings
Settings have a new card design that's easier to scan and quicker to find your way around.
Two Columns on Bigger Screens
On iPad, and on iPhone Duo when it's open, My Skin, Forecast and Settings spread across two columns. The UV view adapts smoothly as you resize windows in Split View and Stage Manager.
And More
Smoother sun graph dragging, refreshed widget charts, and lots of smaller fixes and improvements.
Rank history
Daily position in the Japan charts. #1 is at the top.
- Best rank
- #44
- Current rank
- #78
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
51/100
Not flagged as small & simple
- Developer size10% · 25
Developer: 4 apps on the charts
- Audience size0% · 20
Ratings: 14,548
- App size60% · 10
Size: 141 MB
- Price model80% · 15
Price model: free with in-app purchases
- Demand proof100% · 30
Best rank #1, 118 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksVersion history
- 14.1LatestReleased Oct 9, 2026