Sola: Sun UV & Vitamin D Timer 4+

Manage your sun exposure

BrightMatter LLC

    • 4.5 • 44 Ratings
    • Free
    • Offers In-App Purchases


Sunlight enhances mood, relieves stress, improves sleep, and triggers essential vitamin D production. But too much sun exposure increases the chances of sunburns and skin cancer.


Whether you're aiming to safely achieve a perfect suntan, get vitamin D without sunburn, or minimize UV radiation exposure, Sola is the app for you.

Sola calculates and monitors your sun exposure and vitamin D production based on the current UV index forecast, your skin type, existing tan, previous exposure, sunscreen SPF, and whether you change sides regularly when you sunbathe.


With Sola’s handy timer, you’ll never forget to reapply sunscreen, flip over for an even tan, or know when it’s time to seek shade.


It also comes with an Apple Watch extension so that you can manage your UV exposure right on your wrist.


Sola seamlessly integrates with the Apple Health app to track your vitamin D production, UV index exposure, and, if available, Time in Daylight to get more accurate UV dose and vitamin D levels based on actual daylight conditions.


Lastly, thanks to its monochrome themes, you can easily interact with the app in bright sunlight, and especially if you are wearing sunglasses.


Enjoy a FREE first week, and make the most of your time in the sun!

After the free trial, all access can be unlocked with an annual subscription. Alternatively, you can make a one-time purchase valid for lifetime.


Sola is designed to provide helpful information, to the best of the developer's knowledge and scientific research, about the extent of exposure to solar UV radiation considering various factors such as skin type, existing tan, location, UV light intensity, applied sunscreen, and so on.

However, such information is not meant to be used, nor should it be used, as replacement for common sense, independent mature judgement, or healthcare advice.

To the maximum extent allowed by law, the developer shall not be held responsible or liable for any damage or consequences from any action by any person in connection to using or inability to use this app.

Terms of use:

What’s New

Version 3.20

Improvements in Time in Daylight functionality

Ratings and Reviews

4.5 out of 5
44 Ratings

44 Ratings

RLNfirst ,

Unique outstanding design app!

Sometimes I run into to something that is so nice that it is hard to put into words to describe or express it to you. This for me is one of those times. I hope I can come across to all of you with my Heart ( why ) because the Developer put His Heart into this well unique Designed App! This is a app to help you, your family, and myself. It’s a Health app about UV Rays that we face everyday of our lives. These rays are good for us and bad if you get to much of them at to many times I guess I can put it. The Developer has put a great deal of love and work into this app you can tell that by the many updates you can see done. I thank the Developer for putting this app out for you and myself to use. To me the Developer is my Friend ( why ) only a friend would try to help you and your family! Download the app today try it today. I have been using this app for a few years now and I have never been disappointed! I truly believe the Developer has put His heart into helping me and my family every day of the year. So please try this app and to the Developer I truly Tip my Hat 🎩 to you for creating a great unique Outstanding Design App but most importantly becoming the best Friend a ole man could ever hope for ! “ Thanks from my Heart ❤️ “

Developer Response ,

Thank you so much for your positive review!

Theotheria ,

Amazing experience

Have used this for a year and I was the tannest I had ever been last year! I never burned when I listened to the app. So nice to know I can go out and get my vitamin D and a little sun in just a few minutes during the height of summer, and I didn’t have to sunscreen up!
Looking forward to working on my tan again this year, and making sure I get that daily Vitamin D!

Developer Response ,

Thank you so much for your 5-star review! So glad you've found the app useful. Your feedback is a great inspiration to continue improving and enhancing the app's features.

krickettbug ,


I’ve been using this app not for tanning but for my newborn and sun/UV exposure. It’s been fantastic. I had a few “hick-ups” at first but the app support was amazing and worked helping me figure everything out!!! I 100% suggest using this app!!

2023 - still using and is still awesome!!

Developer Response ,

Update 2023: thank you so much for you kind words and being a loyal customer!
Thank you so much for your positive feedback!

App Privacy

The developer, BrightMatter LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Purchases
  • Location
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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