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Update 3.6.1 released in App Store that fixes crashes at app start

Updated post (2024-03-09 3:00PM CST): New update of Sola (v. 3.6.1) with fixes has been released in App Store. Make sure to update Sola through App Store, unless you enabled automatic updates for the app. Apologies for the inconvenience and thank you for your patience!
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Original post (2024-03-09 9:00AM CST): As of this morning, new crashes have been reported. Appears to affect users who have installed the latest iOS 17.4. Actively working on a resolution.

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Affected users who purchased version 1.25

Update 3/2/2021: this has been fixed. Users should be able to restore their purchases now.

Users who purchased version 1.25 are presented with a paywall screen and cannot restore their purchases. I have just released a fix and Apple should be approving it within the next few hours. Once the release is approved, affected users will be able to restore their previous purchase. Apologies for the inconvenience!

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Welcome to Sola – Sun UV & Vitamin D Timer

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

Sola calculates and tracks how much sun exposure you are getting based on current UV index forecast, your skin type, any existing tan, sunscreen SPF, and more.

Sola features a convenient Timer that reminds you when to re-apply sunscreen, when you need to get out of the sun, etc.

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

Sola optionally integrates with Apple Health app, specifically to read your Fitzpatrick Skin Type and to keep track of UV index that you were exposed to.

Also included now is Vitamin D tracking.

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

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App Store review from Germany

Thought I’d share this review from Germany:

Couldn’t recommend the app more. You can see that someone really thought this through with superb execution. Current UV Index, pulled from the Internet, is part of the calculation. Everything else can be adjusted from skin type to base tan, to the sun protection factor of the sunscreen used, and the history of the previous exposures! There is a web page for the app on which the app is explained in detail. This is the best of all the apps I’ve seen, even if it’s only in English.

Original: Kann die App nur weiter Empfehlen. Man sieht, dass sich hier wirklich jemand Gedanken darüber gemacht hat und dieses Super umgesetzt umgesetzt hat. UV Index wird über Internet abgerufen und fließt in die Berechnung der Dauer ein, steht’s aktuell. Es lässt sich alles einstellen von Hauttyp bis Bräune übern Lichtschutzfaktor der verwendeten Sonnencreme, über Historie der genommen Sonnenzeit von den lätzen Tagen alles vorhanden! Es gibt zu der App eine Web-Seite auf der die App Ausführlich erklärt wird. Das ist das Beste was ich bisher von allen Apps die es gibt was ich gesehen habe, auch wenn nur in Englisch.

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Android version of Sola

Some news I wanted to share – started building an Android version of the Sola Sun UV Calculator and Timer. Meanwhile, if you own an iPhone, make sure to download my app if you want to manage your suntan experience and avoid sunburns.

UPDATE 6/1/2023: Unfortunately, I haven’t had enough time to invest in the Android version. In talks about potentially outsourcing the development for the other platform

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Get Sola Sun UV Calculator / Timer for $.99

Get Sola Sun UV Calculator / Timer for $.99 before the price increases in the upcoming season.

Sola is the app that takes the guesswork out of understanding how much sun exposure you are getting, whether you want to minimize UV intake from sunlight, or optimize sunburn-free tanning time.