# SunMax: Vitamin D Tracker — Sunlight & Circadian Rhythm > Sunlight & Circadian Rhythm (iPhone/iPad app by Oliver Stojcevski.) - Source: https://appshunter.io/ios/app/sunmax-vitamin-d-tracker/id6749281214 (this page in markdown: same URL + `.md`) - Developer: [Oliver Stojcevski](https://appshunter.io/developer/1829807990) - Category: Health & Fitness, Weather - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.0 · 27 MB - Languages: American English - Released: 2025-12-05 - Data updated: 2026-09-02 - User reviews in markdown: https://appshunter.io/ios/app/sunmax-vitamin-d-tracker/id6749281214/reviews.md ## What is SunMax? SunMax turns sunlight into science-based guidance for vitamin D and safer sun exposure. Using real-time UV data, a personalized profile, and a multi-factor model built around your skin type, exposed skin, sun angle, session timing, and weather conditions, SunMax helps you plan outdoor time more intentionally. KEY FEATURES Free features: • Personalized setup Create your profile, take the Fitzpatrick skin quiz, and tailor guidance to your body and skin type. • Vitamin D session tracking Start live sessions and watch your estimated vitamin D and burn-risk guidance update as conditions change. Daily limit of 20 minutes. • Real-time UV + weather intelligence View current UV, hourly trends, and forecast context to choose better times for sun exposure. • Apple Health sync Connect Apple Health to autofill your height, weight, and body metrics, import last night's sleep for your morning check-in, and save your sun-session vitamin D and time in daylight back to Health. Optional and off until you turn it on. • Daily goals, supplement logging, and reminders Track sunlight and supplement intake together so you stay consistent with your routine. • Account benefits (free) Create a free account to save and sync your data across devices, and customize avatar clothing for more accurate exposure estimates. • Limited past session logging Add up to 1 past session per day to backfill your history. Premium subscription features: • Unlimited vitamin D sessions Track as many sessions as you want with no daily time limits. • Unlimited past session logging Add as many past sessions as you need to complete your vitamin D history. • Morning and evening light routines Track circadian rhythm exposure separately from vitamin D sessions. • Wellbeing insights and correlations See how your sun exposure affects your sleep, mood, and energy throughout the day — enriched by sleep data from Apple Health. • Advanced analytics and longer-range trends View weekly and monthly progress with historical data and detailed insights. • Streak freeze protection Protect your daily streak with monthly freeze days. Subscription details: SunMax offers optional auto-renewing subscriptions for Premium features, including monthly, yearly, and lifetime options where available. A 7-day free trial may be offered to eligible new subscribers. Built for walks, workouts, beach days, and everyday time outdoors, SunMax helps you use sunlight more intentionally. Important: SunMax provides estimates and guidance, not medical advice. Terms of Service: https://www.sunmaxapp.com/terms-of-service/ Privacy Policy: https://www.sunmaxapp.com/privacy-policy/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Monthly | $4.99 | per month | | Premium Yearly | $39.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | SunMax Premium Lifetime | $69.99 | one-time | ## Version history (last 5 releases) ### 1.4.7 — 2026-08-28 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. ### 1.4.6 — 2026-08-27 Dark mode is here. SunMax now follows your system appearance, with a redesigned dark theme that's easy on the eyes for those early morning and evening sun checks. Plus a handful of small polish tweaks to make everything feel a little smoother. ### 1.4.5 — 2026-08-24 New icon, same great SunMax experience! We've updated the app icon to make it easier to spot on your Home Screen. ### 1.4.4 — 2026-08-20 New: Apple Health integration SunMax now works with Apple Health. Connect it to: • Autofill your height, weight, and body metrics • Import last night's sleep for your morning check-in • Save your sun-session vitamin D and time in daylight to Health • Pull in vitamin D you've logged in other apps It's completely optional — turn it on anytime under Account → Apple Health. Improvements • Enhanced wellbeing insights: see how your sun exposure affects your sleep, mood, and energy throughout the day, now with improved correlation tracking • More accurate sunburn estimates • You can now suggest new features you'd like to see in the app ### 1.4.3 — 2026-08-10 Improvements • Enhanced wellbeing insights: See how your sun exposure impacts your sleep, mood, and energy throughout the day with improved correlation tracking • Improved the accuracy of the sunburn estimate • Users can now suggest new cool features they would like in the app. Bug Fixes • Improved subscription status consistency and reliability ## Apps similar to SunMax | App | Rating | Price | Category | | --- | --- | --- | --- | | [Pocket Genes](https://appshunter.io/ios/app/pocket-genes/id6748587627) | 5.0 (1) | Free | Health & Fitness | | [Lockin - Earn Your Screen Time](https://appshunter.io/ios/app/lockin-earn-your-screen-time/id6760609104) | — | Free | Health & Fitness | | [Vitamin D Sun Tracker - Bask](https://appshunter.io/ios/app/vitamin-d-sun-tracker-bask/id6758405235) | 4.9 (9) | Free | Health & Fitness | | [Rays: Auto Vitamin D Tracking](https://appshunter.io/ios/app/rays-auto-vitamin-d-tracking/id6752499967) | 4.4 (7) | Free | Health & Fitness | | [Hello Sun - Vitamin D Tracker](https://appshunter.io/ios/app/hello-sun-vitamin-d-tracker/id6756599125) | 5.0 (1) | Free | Health & Fitness | | [Vitamind: Sun Tracker](https://appshunter.io/ios/app/vitamind-sun-tracker/id6760296079) | — | Free | Health & Fitness | ## More apps by Oliver Stojcevski - [BibleSense](https://appshunter.io/ios/app/biblesense/id6761179320) All apps by Oliver Stojcevski: https://appshunter.io/developer/1829807990 ## Related topics [vitamin d sun](https://appshunter.io/ios/topics/vitamin-d-sun) · [vitamin d tracker](https://appshunter.io/ios/topics/vitamin-d-tracker) · [synthetic sunlight](https://appshunter.io/ios/topics/synthetic-sunlight) --- *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 2026-09-02.*