SunMax: Vitamin D Tracker
Sunlight & Circadian Rhythm
About
This app uses real-time UV data and your personal profile to provide science-based guidance for vitamin D production and safe sun exposure. It helps you plan outdoor time intentionally, track sunlight intake, and log supplements.
What's New in SunMax
1.4.7
August 28, 2026
This update brings a cleaner Sun Sessions experience. Sun protection and outfit setup are now tucked into a collapsible card, so the Start button is right where you need it without extra scrolling. The avatar on the session screen also has a few subtle visual polish touches to make the experience feel more alive.
MoreSubscriptions & In-App Purchases
Premium Monthly
Outfit customization, unlimited sessions & insights
Developer apps
FAQ
Does SunMax have ads?
No, SunMax is ad-free, allowing for an uninterrupted user experience focused on health tracking.
What is the cost of SunMax Premium?
SunMax Premium offers monthly at $4.99, yearly at $39.99, and includes a 7-day free trial for eligible new subscribers.
How accurate is SunMax's vitamin D estimation?
SunMax provides science-based guidance using real-time UV data, personalized profiles, and a multi-factor model. It is important to note that SunMax provides estimates and guidance, not medical advice.
What devices does SunMax support?
SunMax is available on iPhone and iPod devices, making it accessible for many Apple users.
How often is SunMax updated?
The latest version of SunMax is 1.4.7, and it was last updated on August 28, 2026, indicating regular maintenance and feature improvements.
Can I track my sun exposure history with SunMax?
Yes, free users can log up to 1 past session per day, while Premium subscribers can log unlimited past sessions to complete their history.
What age rating does SunMax have?
SunMax has an age rating of 4+, making it suitable for a wide range of users interested in tracking their sun exposure.
Does SunMax integrate with other health apps?
Yes, SunMax offers Apple Health sync, allowing it to autofill personal metrics, import sleep data, and save sun session information back to Health.
