Hello Sun - Vitamin D Tracker
Plan your sun & supplements.
About
Track vitamin D intake from sunlight and supplements with safe, burn-aware timers. Offers personalized estimates and weekly progress tracking, adapting to your skin and location for optimal sun exposure.
What's New in Hello Sun
1.0.7
January 27, 2026
Bug fixes and improvements: • Sun Styles (patterns) are now available for free • Sun Styles stability improvements • Progress metrics updates • Added refresh buttons to forecast charts
MoreSubscription plans
Hello Sun Plus Yearly Subscription
Annual subscription - Best value for Plus features
FAQ
What is Hello Sun?
Hello Sun is a health and fitness app designed to help you track your vitamin D intake from both sunlight and supplements. It features burn-aware timers to ensure safe sun exposure and provides estimates of your vitamin D levels.
Does Hello Sun have ads?
No, Hello Sun is privacy-first and does not contain any advertisements. This ensures an uninterrupted and focused user experience.
What are the subscription options for Hello Sun Plus?
Hello Sun Plus offers two subscription plans: a monthly subscription for $3.99 with a 14-day free trial, and a yearly subscription for $29.99, also with a 14-day free trial. These unlock extended features like unlimited history and deeper insights.
What devices does Hello Sun support?
Hello Sun is currently supported on iPhone and iPod devices. It is designed for iOS users looking to manage their vitamin D intake.
How accurate are Hello Sun's vitamin D estimates?
Hello Sun provides live IU estimates during sun sessions and daily totals. While it offers valuable insights, it's important to remember these are estimates and not medical advice. Always consult a healthcare professional for personalized guidance.
Can Hello Sun help with planning sun exposure in different seasons?
Yes, Hello Sun includes a 'Winter Mode' to support low-UV seasons and locations. It also uses UV forecasts and your personal data to suggest optimal sun windows for your skin type and location.
How often is Hello Sun updated?
The latest version of Hello Sun is 1.0.7, which was last updated on January 27, 2026. This indicates regular maintenance and potential feature additions.
Is Hello Sun suitable for children?
Hello Sun has an age rating of 4+. While it provides health tracking features, parents should supervise its use and always consult healthcare professionals for children's health needs.