# Vitamin D: Sun & UV Tracker — Sunlight, D3 & Deficiency > Personalized sun exposure tracker for vitamin D and UV safety. (iPhone/iPad app by Uladzsislau Luchkouski.) - Source: https://appshunter.io/ios/app/vitamin-d-sun-and-uv-tracker/id6759393447 (this page in markdown: same URL + `.md`) - Developer: [Uladzsislau Luchkouski](https://appshunter.io/developer/1821242450) - Category: Health & Fitness, Weather - Price: Free with in-app purchases - Rating: 5.00/5 from 16 App Store ratings - Age rating: 4+ - Requires: iOS 18.6 · 24 MB - Languages: American English - Released: 2026-02-27 - Data updated: 2026-08-23 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/vitamin-d-sun-and-uv-tracker/id6759393447/reviews.md ## What is Vitamin D? Vitamin D: Sun & UV Tracker turns sunlight into clear, personal data. It works out when your skin can actually make vitamin D, so you get what you need from the sun and know the moment to cover up. Most apps show a generic UV index. That is not enough to judge vitamin D. This app uses astronomy and live atmospheric data to estimate the UVB at your exact spot: - Sun angle: real time solar altitude for your GPS location. - Ozone: adjustments for current ozone density. - Air clarity: aerosol filtering for a sharper read on usable sunlight. Built for Apple Watch - Window complications: keep today's vitamin D window on your watch face. - Haptic alerts: a gentle tap when the sun angle is right where you are. - Live progress: watch your dose add up without reaching for your phone. Apple Health integration - Your vitamin D from sun and your time in the sun log automatically to Apple Health, so the rest of your health apps see the full picture. Personal by design - Skin type: timing based on the Fitzpatrick scale to help you avoid burning. - Anywhere on Earth: accurate at any latitude, with extra care for northern regions and short winter days. - Calm interface: focused on your data, with nothing in the way. Why people choose it - Private: your health and location stay on your device. No account needed. - Quiet: no ads and no noise, just a clean instrument. - Light: easy on battery for iPhone and Apple Watch. Stop guessing. Start measuring your sun. Privacy Policy: https://experts-draw-9pm.craft.me/jhKYqLYOOaA3vi Terms of Use: https://experts-draw-9pm.craft.me/i3cxOdfwgo2BQ7 ## Key features - Personalized vitamin D windows - Real-time UV index with atmospheric data - Skin type adjustments - Apple Watch complications and alerts - Apple Health integration - Location-based solar altitude - Ad-free and private experience ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Yearly | $49.99 | per year | | Premium Weekly | $2.99 | per 7 days | ## Frequently asked questions about Vitamin D ### Does Vitamin D have ads? No, Vitamin D is ad-free. The app is designed to provide a clean and quiet experience focused solely on your data. ### What are the subscription options for Vitamin D? Vitamin D offers a Premium Weekly subscription for $4.99 and a Premium Yearly subscription for $149.99. These plans likely unlock additional features or content. ### How accurate is Vitamin D's UV index calculation? Vitamin D uses astronomy and live atmospheric data, including sun angle, ozone density, and air clarity, for precise UVB estimation at your GPS location, going beyond generic UV index readings. ### Can I use Vitamin D on my Apple Watch? Yes, Vitamin D is built for Apple Watch with features like window complications for your watch face, haptic alerts for optimal sun times, and live progress tracking. ### Does Vitamin D integrate with Apple Health? Yes, Vitamin D integrates with Apple Health. Your vitamin D from the sun and time spent in the sun are automatically logged, providing a complete picture for your other health apps. ### Is Vitamin D suitable for all skin types and locations? Yes, Vitamin D is designed to be personal by considering your skin type (Fitzpatrick scale) for burn avoidance and is accurate anywhere on Earth, with special attention to northern regions and short winter days. ### How often is Vitamin D updated? The latest version of Vitamin D is 1.2, and it was last updated on June 25, 2026. This indicates a recent update and ongoing development. ### What is the age rating for Vitamin D? Vitamin D has an age rating of 4+. This suggests it is suitable for a wide range of users, including children, with no mature content. ## Version history (last 3 releases) ### 1.2 — 2026-06-25 New in this version: - Smart Sun Safety: clear guidance on when to catch sun and when to cover up, from your very first day. - Solar window alerts: a nudge when conditions are good for vitamin D where you are. - Vitamin D reserve: see your level fill up like a battery through the day. - Insights you can swipe: daily and long term views of your sun and supplement intake. - Live session tracking and a smoother Apple Watch experience. - More reliable Apple Health sync and more accurate readings. Thank you for the reviews and feedback. Please keep it coming. ### 1.1 — 2026-03-04 Small tweaks under the hood and a bit of polish. Thanks for using the app—we read your feedback. ### 1.0 — 2026-02-27 No release notes. ## More apps by Uladzsislau Luchkouski - [SnapTasty – AI Food Photo Edit](https://appshunter.io/ios/app/snaptasty-ai-food-photo-edit/id6748094714) - [Mobile IDE for Antigravity AI](https://appshunter.io/ios/app/mobile-ide-for-antigravity-ai/id6759795486) - [Polymarket Prediction Alert AI](https://appshunter.io/ios/app/polymarket-prediction-alert-ai/id6760471596) - [Mobile IDE for Codex AI GPT](https://appshunter.io/ios/app/mobile-ide-for-codex-ai-gpt/id6761128531) - [Trading View Chart AI Analyzer](https://appshunter.io/ios/app/trading-view-chart-ai-analyzer/id6761357709) All apps by Uladzsislau Luchkouski: https://appshunter.io/developer/1821242450 ## Related topics [prism-sunlight tracker](https://appshunter.io/ios/topics/prism-sunlight-tracker) · [3d tracker pro](https://appshunter.io/ios/topics/3d-tracker-pro) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*