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
BRING YOUR HISTORY (FREE)
• Import your Time in Daylight history from Apple Health in one tap — no account
• Back up everything to one file and restore on a new phone, with optional encryption
• Switching from another tracker? Anchor your vitamin D to your last blood test
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).
Every feature free for 14 days. Then unlock SolGlow Pro with a one-time $14.99 founders purchase (going up soon) — no subscription, Family Sharing included. The free tier keeps today's tracking and all safety alerts.
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 ?
Switching to SolGlow? Now it's effortless — and your data is safer than ever.
BRING YOUR HISTORY
Coming from another sun tracker? SolGlow now imports your sunlight history straight from Apple Health — years of it, in one tap, no account. Start full, not empty.
BACK UP EVERYTHING
New Backup & Restore: save all your data — profile, history, sessions, blood-test baseline — to a single file you keep in Files or AirDrop to a new phone. Optional passphrase encryption. Still no servers, ever.
SWITCHER SETUP
A new "coming from another tracker?" path anchors your vitamin D to your last blood test and shows exactly what carried over.
SET YOUR OWN GOAL
Want a different daily target? You can now set your own vitamin D goal — in Profile, or by tapping the goal right on your Dashboard. (Also fixed: the larger widget now shows your vitamin D next to your goal, not your minutes outside.)
- Various bug fixes and improvements.
Founders pricing: SolGlow Pro is one-time $14.99 as of July 1st — lifetime, no subscription. Buy once, keep it forever.
As always: no account, no analytics, no ads. Your data stays on your device.