SolGlow: Morning Light

iOS Universel / Forme et santé

SolGlow turns your time outside into the number that matters: vitamin D — measured in IU, not just minutes.

Using your Apple Watch's Time in Daylight, your skin type, outfit, age, and your exact location's solar geometry, SolGlow estimates how much vitamin D you actually made today — and warns you before you cross your sunburn threshold.

Every estimate comes from a named, peer-reviewed model: Holick's synthesis research, Heaney/Veith serum dose-response, Fitzpatrick burn thresholds, and Spencer's solar equations. No black boxes.

TODAY, AT A GLANCE
- Live UV index and your personal IU-per-minute rate
- One daily goal, tuned to your life stage — with a celebration when you hit it
- Burn-safe time remaining for your skin type, with alerts before you burn
- Morning Light: catch the first light that anchors your energy and sleep

SUN SESSIONS (PRO)
- Live Activity on your Lock Screen and Dynamic Island: live IU counter, burn-safe countdown
- Sunscreen reapply timer with an "I reapplied" restart right from the notification
- Session log with editable history — fix any day your watch missed

PLAN AHEAD (PRO)
- 7-day UV forecast with your personal best-sun windows
- Annual sun plan: which months actually make vitamin D at your latitude
- Travel UV planner for your next trip

KNOW YOUR LEVEL (PRO)
- 25(OH)D serum estimate with a 12-week projection
- Cofactor support: log magnesium, K2, B12, omega-3 — the nutrients that activate vitamin D
- Personalized supplement guidance and blood-test reminders
- Doctor-ready PDF/CSV report

YOUR WEEK IN THE SUN (PRO)
- Daily goal rings, streaks, and a beautiful shareable weekly recap card
- Apple Watch app, Smart Stack widget, and complications
- Home Screen and Lock Screen widgets

PRIVATE BY DESIGN
No account. No sign-up. No analytics. No ads. Your health data, profile, and location history never leave your device — the app's only network call fetches a UV forecast (coordinates only, no identifier).

FREE TO TRY, YOURS FOREVER
Every feature free for 14 days. Then unlock SolGlow Pro with a one-time $7.99 purchase — no subscription, Family Sharing included. The free tier keeps today's tracking and all safety alerts, always.

Requires iPhone (iOS 17.2+). Apple Watch (watchOS 10+) strongly recommended — it's the source of automatic Time in Daylight tracking.

SolGlow estimates are educational, not medical advice. Always consult your clinician about vitamin D supplementation and blood testing.

Quoi de neuf dans la dernière version ?

The Celebrate the Sun update — SolGlow now makes hitting your goal feel as good as it is.

CELEBRATIONS & STREAKS
Meet your daily vitamin D goal and the app celebrates with you — plus streak milestones at 7, 30, and 100 days. Your goal now counts everything: sun, supplements, and diet, so winter days count too.

SUNSCREEN REAPPLY TIMER
Start a sun session wearing SPF and SolGlow schedules your reapply reminder — with a live countdown right on your Lock Screen, and an "I reapplied" button that restarts the timer without opening the app.

YOUR WEEK IN THE SUN
A beautiful shareable recap of your week — total vitamin D, goals met, your streak, and your sunniest day. Post it, send it, or just enjoy it. Optional Sunday-evening reminder.

DARK MODE, REFINED
Every card now renders beautifully in dark mode.

CLEARER, FAIRER, MORE ACCESSIBLE
One consistent daily goal across every screen. Honest guidance when location is off or you don't have an Apple Watch. First full VoiceOver and Dynamic Type pass. Outfit settings that visibly stick.

Privacy is unchanged: no accounts, no analytics, no ads, no tracking. Your health data stays on your device.