UV index, burn time & sun safety

Know your UV, burn time, and safest sun window.

Suntic reads the sky in real time: when to head out, how long to stay, and when to find shade.

Download Suntic on the App Store Free to download · No account needed
Suntic app showing today's UV index, held in hand
The UV scale, made readable

A calmer way to make sun decisions.

At 1 PM today
10 Very High
Skin burns in ~ 26 min
6 AMLowModerateHighVery highExtreme8 PM

Tap any hour to see the UV index and how fast skin burns.

You can't see what's burning you.

UV is invisible. By the time skin turns pink, the damage is already done. Suntic makes the invisible visible, long before you feel it.

Real-time UV

A live index for your exact location, refreshed through the day from Apple Weather.

Personal burn time

Based on your skin type and today's conditions, not a generic chart.

Safe sun windows

Know the calm hours to be outside and the hours worth avoiding.

The sun, translated into decisions

Everything Suntic shows you points to one thing: a clear, confident choice about your next hour outside.

Today at a glance

Your UV index, burn time, and next safe window in one calm view.

Suntic today screen with the UV index ring
Forecast that helps

A 10-day outlook coloured by peak UV, so you can plan ahead.

Suntic 10-day UV forecast screen
Guided routines

Gentle reminders to apply, reapply, and step into the shade.

Suntic guided tanning routine screen
Suntic showing the UV index and a burn-time estimate

Know your burn time before you step outside

Suntic estimates how long your skin can stay exposed today, then quietly counts down so you never overstay.

  • Tailored to your skin type and the SPF you're wearing
  • Recalculates automatically as conditions change
  • A quiet nudge before you reach your limit

Plan your week around the sun

See the whole week coloured by peak UV. Spot the calm mornings and the harsh afternoons before they arrive.

  • See peak UV for every day at a glance
  • Spot the calm mornings and the harsh afternoons
  • Schedule outdoor time with confidence
Suntic weekly UV forecast held in hand

Safe sun in four simple steps

01
Set your skin type

Tell Suntic how your skin reacts, and it does the rest.

02
Check today's UV

See the live index and your personal burn time.

03
Follow your window

Head out during the calm hours Suntic highlights.

04
Get gentle reminders

Reapply and seek shade right on time.

What Suntic changes about your time in the sun

Less
guesswork

Clear numbers instead of squinting at the sky and hoping.

Less
burning

Step inside before your skin quietly reaches its limit.

More
good days

Enjoy the sun on your terms, calmly and confidently.

Calmer days, fewer surprises

“I used to come home pink every summer. Now I just glance at my safe window before the beach, and I actually trust it.”
Mara K.Coastal regular
“On long climbs the burn timer is the thing I check most. It's quietly become part of how I plan every route.”
Daniel R.Trail runner
FAQ

Frequently asked questions

Is Suntic free?
Yes. Core features are free, including today's UV index, a 3-day forecast, one guided routine, and all widgets. Suntic Pro unlocks the full 10-day forecast, multiple saved places, unlimited guided routines, advanced health metrics and AI-powered insights.
Where does the UV data come from?
Suntic reads the real-time UV index for your precise location from Apple Weather (WeatherKit) and updates it through the day, alongside a 10-day forecast.
Do I need to create an account?
No. Suntic works the moment you open it, with no sign-up and no email. Your skin type and preferences stay on your device.
Does Suntic track vitamin D and sync with Apple Health?
With your permission, Suntic can save your UV exposure, time in daylight and an estimate of the vitamin D you produced to Apple Health for each session.
Can it replace sunscreen?
No, and it won't pretend to. Suntic provides general sun-safety guidance only, not medical advice. It helps you use sunscreen and shade well by telling you when they matter most; always protect your skin and see a healthcare professional with any concerns.

Make the most of every sunny day.

Download Suntic and let the sky tell you exactly when, and for how long.

Download Suntic on the App Store Free, no account needed · iPhone
Suntic guided tanning routine screen
Suntic
Free · iPhone
Get