UV Index – Sundoze
Burn time & vitamin D, daily
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
New: Supplement logging is now free — plus a weekly summary in Insights and a free UV widget. Pro unlocks your unlimited history and all widgets.
Sun, smarter.
Sundoze tells you the right amount of sun for vitamin D, a safe day out, or a steady tan — adjusted for your skin type, the altitude you're at, and where in the world you are.
Most UV index apps pick a side. Sundoze has two modes for two real sun goals:
▸ MORE SUN — when you're chasing vitamin D or a steady tan. We show you the safe window before you burn. No moralizing. No "just stay inside."
▸ LESS SUN — when you just want to be outside without skin damage. We track your burn time, remind you to reapply SPF, and quietly add it up over the season.
▸ TRAVEL MODE
Going somewhere new? Sundoze shows exactly how the UV index compares to home — adjusted for your skin type. "Phoenix runs hotter than home — pack SPF 50+" isn't generic advice. It's your skin, your math.
▸ ALTITUDE MATH
UV intensifies about 12% per 1000 m of elevation. Snow reflects up to 94%. Most apps don't correct for this. Sundoze does. Built for the Alps and Rockies, not just the beach.
▸ WINTER MODE
Northern winters mean the UV index is too low for vitamin D from sun alone. Sundoze switches into supplement-tracking mode automatically. 80% of Europeans are insufficient through winter. We help you stay consistent.
▸ SCIENCE
Burn-time math uses the Fitzpatrick I–VI skin-type system. Calibrated against the same research dermatologists use. Not generic warnings — your skin, your numbers.
▸ DESIGN
Editorial typography, calm palette, no doomscroll, no panic colors. Sundoze is built to be glanceable in bright sun.
▸ PRO
Unlocks unlimited Travel cities, full Winter Mode tracking, and the 7-day UV index forecast for every location. Free trial included.
Built in Switzerland. No ads. No tracking. Just the math.
Terms of Use: https://arytec.ch/sundoze/terms
Privacy Policy: https://arytec.ch/sundoze/privacy
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Supplement logging is now free. New: weekly summary in Insights, free UV widget. Pro now includes your unlimited history and all widgets.
The developer, Liridon Tahiraj, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Liridon Tahiraj (BE)
- Size
- 7.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Sundoze Pro Lifetime QAR 99.99
- Sundoze Pro Yearly QAR 49.99
- Copyright
- © 2026 Arytec.