Lumisol
UV index widgets for iPhone
Know your UV. Reapply on time.
Lumisol puts today's UV index and peak time on your Home Screen, so you know when to put on sunscreen and when to seek shade.
Google Play: coming soon
LumisolWidgets that match your screen
Current UV, today's curve, golden hour and frizz, in five themes, light and dark.
Home Screen
Every size, from a quick glance to the full day.
Lock Screen
The UV and your reapply timer without unlocking.
StandBy
The small UV widget, also free in StandBy.
Widgets shown with sample data.
How it works
- Share your approximate location while you use the app, or choose a city.
- Add a Lumisol widget to your Home Screen, Lock Screen or StandBy.
- Glance at the UV, today's peak and when to seek shade. Reapplied? One tap starts a 2-hour reminder.
Sun care, based on the WHO
UV levels and colors follow the WHO Global Solar UV Index. Sun care tips come from the American Academy of Dermatology and Cancer Council Australia. No tanning tips, ever.
UV index categories (WHO)
- 0–2 Low
- 3–5 Moderate
- 6–7 High
- 8–10 Very high
- 11+ Extreme
Sources
- WHO: Global Solar UV Index
- American Academy of Dermatology: Sun protection
- Cancer Council Australia: Sun safety
For guidance only, not medical advice. Consult a healthcare professional.
Free to start
Free
USD 0
- Current UV, today's hour-by-hour curve, your "seek shade" window, tomorrow's forecast and the Guide
- UV widget in small and medium, round on the Lock Screen and in StandBy
- What to bring today widget (small)
- Morning UV heads-up, a UV level alert and reapply reminders
Lumisol Pro
USD 2.99 / month
or USD 14.99 / year
7-day free trial for new subscribers
- More widgets: UV Curve, UV this week, low UV hours, Golden Hour, Frizz and more for the Lock Screen
- Reapply: one tap starts a 2-hour sunscreen timer with Live Activity
- Drawing styles (the sky now, fine line, growing sun, black, white) and themes: Soft Sun, Blush, Sage, Sky and Graphite
Prices in US dollars; the App Store shows the price for your country. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Cancel anytime in Settings › Subscriptions.
Questions
What is the UV index?
The UV index measures how strong the sun's ultraviolet radiation is where you are. It goes from 0 to 11+: the higher it is, the faster it can damage your skin and eyes.
Source: WHO: Global Solar UV Index
When do I need sun protection?
From UV 3 you need sun protection. From UV 8, extra protection: avoid the midday sun and seek shade.
Source: WHO: Global Solar UV Index
How often should I reapply sunscreen?
Use a broad-spectrum, water-resistant sunscreen with SPF 30 or higher. Apply it 15 minutes before going outside and reapply every 2 hours, or after swimming or sweating.
Can the UV be high on a cloudy day?
Yes. You can't see or feel UV: it isn't the same as heat. UV can be high on cool or cloudy days, so go by the index, not the temperature.
Is Lumisol free?
Yes. The UV index, today's curve, tomorrow's forecast, the UV widget (small, medium and round on the Lock Screen) and the morning heads-up are free. Lumisol Pro adds more widgets, the Reapply timer and themes.
What does Lumisol do with my location?
Lumisol has no accounts, no analytics, no tracking and no servers of its own. Your location is rounded to about 1 km and sent to Apple only to get weather and UV data. If you prefer, choose a city instead.
Where does the weather data come from?
From Apple Weather. UV, humidity and the forecast come from Apple Weather; golden hour is calculated on your iPhone.