UV Index vs HydroLoop

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

HydroLoop makes drinking water something you actually look forward to. Watch a living 3D bottle fill with every sip, build streaks you won't want to break, and hit a daily goal that's tuned to your body. A bottle that comes alive Pour with a tap or a hold and feel it land. Your hydration fills a real-time 3D bottle you can make your own with finishes and collectible skins. A goal made for you Answer a few quick questions and HydroLoop sets a personalized daily target based on your body and how active you are. More than water Log coffee, tea, juice, and more - HydroLoop understands how each drink counts toward real hydration, and your Coach helps you rebalance. Streaks that keep you going A streak flame that grows as you do, celebrations when you hit your goal, and a streak freeze so one off day doesn't undo your progress. Stays in sync Sign in with Apple to back up your history and restore it across devices and reinstalls - or use HydroLoop without an account. Works with Apple Health and Home/Lock Screen widgets. HydroLoop+ Unlock every drink, bottle, finish, and your Hydration Coach with a subscription ($1.99/month, 7-day free trial) or a one-time lifetime unlock ($19.99). Calm, encouraging, and private. Your hydration, beautifully. --- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hyrdroloopsupport-dot.github.io/hydroloop-site/privacy.html