Vitamin D Sun Tracker & UV vs BiohackMe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vitamin D Sun Tracker & UV
This app personalizes your sun exposure to optimize vitamin D production and prevent sunburn. It uses your location, skin type, and real-time atmospheric data to determine the best times to be in the sun and when to cover up. Integrates with Apple Health and Apple Watch for seamless tracking.
- 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
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Vitamin D Sun Tracker & UV shows when your skin can make vitamin D today, how long you can stay out before you burn, and how far you are from your daily goal. The app combines live UV from Apple Weather with the sun's angle at your location, your skin type, age, clothing and sunscreen: - Sun window: the best time today for vitamin D. - Burn timer and SPF: how long you can stay in the sun with your skin and sunscreen. Burn alerts arrive with the app closed. - Live sessions: tap Start and watch your vitamin D add up, with a Live Activity on your Lock Screen. Sessions and routes - Live map: watch your walk drawn on the map while a session runs. - Session screen: your route with vitamin D, UV and skin charts for every session. - Phone stayed at home? Add a past session by hand. - Watch Auto-Track turns your Apple Watch time in daylight into sessions. Your vitamin D level - An estimate of your blood level from sun and supplements, sharper with every blood test you add, with a 90-day forecast. - Winter Plan: when the sun stops making vitamin D in your city, and what to do then. - Weekly and monthly summaries, a PDF report for your doctor and CSV export. Family - Bring your partner and kids along: everyone gets their own vitamin D, and burn alerts follow the most sensitive skin. Today's Sun Plan - A plan for the day built around your skin, your goals and the UV forecast. Apple Intelligence (iOS 27) - Label scan: photograph a supplement label and the app reads the vitamin D dose. You confirm it before saving. The scan runs on device, on iPhones that support Apple Intelligence. Apple Watch, widgets and controls - Apple Watch: start a session and follow your progress without your phone. - Widgets: vitamin D, UV and your sun window on the Home Screen and Lock Screen, plus a large widget with today's UV curve. - Controls: start a session or log a supplement from Control Center, the Lock Screen or the Action Button. - Siri and Shortcuts: start or stop a session or log a supplement with your voice. Sun and supplements - Log supplements next to your time in the sun and see your whole vitamin D day. - Apple Health: the app saves your vitamin D and the UV exposure of each session, and reads your daylight time from Apple Watch. Goals and accessibility - Goals: pick what you want from the sun, and the app builds your plan around it. - Location: use your position or choose a city, at any latitude. - Accessibility: VoiceOver, Voice Control, Larger Text, Dark Mode and Reduce Motion. Privacy - Your health data stays on your device. No account, no ads. Vitamin D values are estimates for general wellness, not medical advice. Privacy Policy: https://experts-draw-9pm.craft.me/jhKYqLYOOaA3vi Terms of Use: https://experts-draw-9pm.craft.me/i3cxOdfwgo2BQ7
BiohackMe
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Future-proof your health — biohacking made simple. BiohackMe turns the science of longevity into small, daily steps anyone can take. No expensive gadgets, no overwhelm — just an honest look at where you stand and a clear plan to feel better. Take the 2-minute HealthSpan Audit and see all 8 pillars of your health scored 0–100: Sleep, Body, Energy, Health, Mood, Environment, Relationships and Brain. We surface the three areas where you'll feel the biggest difference, fastest. Then build momentum at your own pace: • 30-DAY CHALLENGES — a few simple daily hacks per pillar, small and repeatable. Don't like one? Swap it for another. Run up to three at once. • DAILY PRACTICES — joy, gratitude, journaling and affirmations to support your mind and nervous system. • TRACK YOUR PROGRESS — streaks, your personal Biohacking Wheel, and re-assessments that show your score move. • MAKE IT STICK — built-in behaviour-change prompts help new habits actually last. Built on a simple belief: biohacking should be accessible, affordable and achievable for everyone — whatever your age, budget or starting point. A companion to Camilla Thompson's book, Biohack Me, brought to life in your pocket. You're wonderfully bio-individual. Every suggestion is yours to adjust to what works for your unique body. Start your HealthSpan Audit today — your future self will thank you.
Screenshots
Verdict
The clearest difference is in-app purchases: BiohackMe at none against Vitamin D Sun Tracker & UV's 2. BiohackMe also leads on iOS requirement (16.4 vs 18.6). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Vitamin D Sun Tracker & UV sells 2 in-app purchases, starting at $2.99 per 7 days. BiohackMe asks for nothing beyond the download.
Vitamin D Sun Tracker & UV ships an update weekly, BiohackMe every 2 weeks. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | Vitamin D Sun Tracker & UV | BiohackMe |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (16 ratings) — better | — |
| Number of ratings | 16 — better | — |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 18.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 26 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Uladzsislau Luchkouski | Camilla Thompson |
In-app purchases
Vitamin D Sun Tracker & UV
- Premium Weekly$2.997 Days
- Premium Yearly$49.991 Year
BiohackMe
No in-app purchases
Questions
Is Vitamin D Sun Tracker & UV free?
Is BiohackMe free?
Do Vitamin D Sun Tracker & UV or BiohackMe have ads?
Which is updated more often, Vitamin D Sun Tracker & UV or BiohackMe?
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