Sunhaven: UV & Sunburn Timer

Your personal burn time, live sun sessions with reapply reminders, and a warning before UV peaks — now with pause and resume right from the lock screen.

Know YOUR safe time in the sun — not just the UV number.

Sunhaven is completely free. Every feature — the burn timer, the forecast, the widgets, the alerts — with no subscription, no ads, no account, and no tracking of any kind.

The UV index says 7. But what does that mean for you? Sunhaven turns the forecast into the answer that matters: how long your skin can safely be in the sun. Pick your skin type and your usual SPF, and Sunhaven estimates your personal burn time from the live UV forecast for wherever you are.

THE SUN SESSION Tap Start when you head outside. A live countdown ring tracks your remaining sun time against the changing hourly UV — not a single static number. You'll get a nudge when it's time to reapply sunscreen, a warning as you approach your limit, and a calm summary of your day in the sun when you're done. Went for a swim? One tap shortens your reapply timer and adjusts your budget.

BEFORE THE PEAK, NOT AFTER Sunhaven warns you about an hour before UV peaks on high-UV days, so you can plan shade, sunscreen, and swims — not regret them.

WHAT'S INSIDE • Personal burn-time estimates for six skin types and any SPF • Live Sun Sessions with reapply reminders and limit warnings • Sessions keep counting accurately while your phone is locked or in your pocket • Live Activity on the lock screen and Dynamic Island • Log a session you forgot to start, or correct one you already saved • Hourly UV today, plus a full 7-day UV forecast • Daily peak-UV alerts with quiet hours • Home-screen and lock-screen widgets with your safe time • History of your sun sessions with weekly totals • Works with your location, or any city you choose

PRIVATE BY DESIGN No account. No ads. No tracking. Everything is computed on your device, and your location is used only to fetch the local UV forecast.

Weather data provided by Apple Weather.

Estimates are based on WHO UV guidance and typical skin responses. Individual sensitivity varies. Sunhaven is not medical advice.