Sunpop: UV Index & Burn Timer
iOS app by Przemyslaw Bocer. Health & Fitness · Przemyslaw Bocer
- Store rating
- 0 / 5
- Store rating count
- 0
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 1.0
- Listing last refreshed
- 2026-09-11
View the original store listing
Store description excerpt
"UV 7" tells you nothing. Sunpop turns it into a number you can act on: how many minutes you can stay in the sun today before your skin starts to burn. The estimate is calculated for you — your Fitzpatrick skin type, your sunscreen SPF, and the live UV index at your exact location — not for an average person on an average day. HOW LONG UNTIL YOU BURN See your personal burn time on the home screen, updated as the UV changes through the day. Add your SPF and watch the window extend. The model uses a cumulative dose curve rather than a flat countdown, so the number stays honest as the sun climbs and drops. SUN SESSION TIMER Tap Start Sun Session before you head out. A Live Activity on your Lock Screen and Dynamic Island counts down your remaining safe time, so you never have to unlock your phone at the beach. Reapply reminders arrive every two hours. Tap Stop and it all ends immediately. VITAMIN D, TRACKED Sun is not only a risk. Sunpop estimates the vitamin D from each session, based on UV intensity, skin type and exposed skin area, and tracks it against your daily goal — so you can find the balance instead of avoiding the sun entirely. HOURLY UV FORECAST Plan the run, the ride or the beach around the UV curve. See when today's peak hits, and when there is a safe window for a short break. LOCK SCREEN AND HOME SCREEN WIDGETS Current UV and your remaining burn time, visible without opening the app. NOTIFICATIONS THAT ARE ACTUALLY USEFUL - Morning Brief at 8:00 with the day's UV outlook - High UV alert when levels turn dangerous - Burn warning before you reach your limit - Reapply reminder during an active session - Sun Window nudge when UV is pleasant for a short break Every one of them can be turned off individually. YOUR HISTORY Every session is saved: time in the sun, vitamin D earned, burns avoided. BUILT ON PUBLISHED SCIENCE Most sun apps show a coloured scale and tell you to wear sunscreen. Sunpop's numbers come from the Fitzpatrick skin type scale, WHO UV Index guidance and published erythema research, with the SPF model following the standard ISO 24444 methodology. Every constant in the app is documented and sourced. PRIVATE BY DESIGN No account. No sign-up. No backend. No tracking, no ads, no analytics profile. Your skin type and your session history never leave your iPhone. Weather data comes from Apple WeatherKit. Sunpop provides educational estimates to help you avoid sunburn. It is not medical advice and cannot predict how your skin will react. If you have a skin condition, take photosensitising medication or have a history of skin cancer, follow your doctor's guidance. Requires iOS 17 or later. Location access is used only to fetch UV data for where you are.
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