The Wolfram Sun Exposure Reference App is your ultimate beach essential this summer and all year! It calculates how long your skin can be exposed to the Sun without burning based on your skin type, location, time, and the level of Sun protection factor (SPF) you might be using. You can also compute a UV forecast for your location, along with a sun protection advisory. Bonus features include sunrise and sunset time, current Sun position, and weather forecast.

The personalized results show you:
- How long you can stay in the Sun before you’re likely to burn based on the factors you reported
- Results automatically computed for your current location along with an option to enter any location, worldwide
- A Sun protection advisory recommending an SPF level
- A UV forecast for your location
- Information on the UV levels for a five-day period that includes the past 24 hours
- A UV index forecast map that you can manipulate by date and time

The Wolfram Sun Exposure Reference App is powered by the Wolfram|Alpha computational knowledge engine and is created by Wolfram Research, makers of Mathematica—the world's leading software system for mathematical research and education.

The Wolfram Sun Exposure Reference App draws on the computational power of Wolfram|Alpha's supercomputers over a 3G, 4G, or Wi-Fi connection.

What's New

Version 1.3.1

- Bug fixes

Ratings and Reviews

No More Sunburn for Mathemagicians!


This app is one pretty *cool* collection of essential utilities, some of which I do not have already ... not only can I now compute how safe it is to work outside, but to get the current weather in a mathematic app is really *Cool* plus gaining the expertise to see the sun-earth-moon configuration is breathtaking. Seriously, this is one of many apps from Wolfram that I have on my iPad and access almost daily. When the school year returns, access will then become daily.

Good info, laggy info input


I like the info & useful advice on SPF. It does, however, lag quite heavily when you input info. Also, it would be useful to have your info saved as a default for skin type, day in advance, ect.

Needs Internet for any request, few graphics.

Fun sapian

Data can be stored by app for short term recall (up to week), the sunrise/sunset prediction is good for months.
Graphics barely used, so can't read info at a glance.

Detail of info is excellent, but ease of usability is very, very low.


Wolfram Group LLC
13.7 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017, Wolfram Alpha, LLC.


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