SunSmart
UV Index & Sun Safety
About SunSmart
SunSmart is your personal sun-safety companion. It turns the live UV index for your exact location into clear, actionable advice: how long you can safely stay out, which SPF to wear today, and exactly when to reapply. Instead of guessing, you get a personalized plan tuned to your skin.
How SunSmart keeps you safe
- Real-time UV index: a live reading for your location with an hourly curve and a multi-day forecast, so you always know when the sun is at its strongest.
- Personal burn-risk timer: using the Fitzpatrick skin-type scale, SunSmart calculates how long you can stay in the sun before burning and counts it down for you.
- SPF guide: get the right SPF recommendation for today's conditions and your skin type.
- Reapply reminders: timely alerts throughout the day, with a swimming mode that shortens the interval to account for time in the water.
- Vitamin D tracking: see how much vitamin D your skin is producing so you can enjoy the sun without overdoing it.
Whether you're tanning on the beach, hiking, or just spending the day outdoors, SunSmart helps you get the benefits of the sun while avoiding sunburn.
Features
Real-Time UV Index
Live UV index for your location with an hourly curve and a 9-day forecast, so you always know when the sun is at its strongest.
Personal Tanning Timer
SunSmart calculates your safe time in the sun from your Fitzpatrick skin type and reminds you when to rotate for an even tan.
SPF Guide & Reapply Alerts
Get the right SPF for today's conditions and timely reminders to reapply — including a swimming mode that accounts for time in the water.
Vitamin D Tracking
See how much vitamin D you're getting from the sun and balance healthy exposure with staying protected.
Frequently Asked Questions
Tanning is possible from a moderate UV index (3–5), but burn risk rises quickly above that. SunSmart shows your live UV index and tells you exactly how long you can stay out before burning.
It depends on your skin type and the current UV level. SunSmart calculates your personal burn-risk time (for example, ~24 minutes at high UV) and counts it down for you.
The app recommends an SPF based on the current UV index and your skin type, and reminds you to reapply at the right intervals.
Yes. SunSmart uses the Fitzpatrick scale (types I–VI) to personalize burn times, SPF advice and tanning reminders for your skin.
Yes. You get reapply reminders throughout the day, and swimming mode shortens the interval to account for time in the water and towel-drying.
It estimates the vitamin D your skin produces during sun exposure so you can get the benefits of the sun without overdoing it.