EnduraSun: UV & Sun Safety

EnduraSun treats sun exposure like a training load — because for athletes who spend hours outdoors, it is one. Most weather apps show you a single UV number. EnduraSun turns that number into something you can actually act on: a personal burn-time countdown built around YOUR skin, YOUR activity, and the live hour-by-hour UV forecast for exactly where you are. PERSONAL TO YOUR SKIN A short skin quiz estimates your personal sunburn threshold — not a generic chart. Every burn time, dose, and risk readout is calculated for you, and quietly errs toward caution where your answers are uncertain. A LIVE SESSION TIMER Start a session and watch your "safe time" count down in real time, following the UV forecast as it rises and falls through your workout. Apply sunscreen and see your protection extend instantly. Get reminded when it's time to reapply — based on how fast sweat and water wear it down for your specific activity, not a flat number. AUTO-LOG FROM STRAVA Connect Strava and every outdoor GPS activity is scored for UV automatically — no manual entry. Your runs, rides, swims, hikes and more flow straight into your Sun Diary, ready for you to confirm whether you were protected. BUILT FOR HOW YOU TRAIN Road and trail running, road and mountain biking, triathlon, open-water swimming, surfing, sailing, paddleboarding, rowing, hiking, climbing, skiing, tennis, football, golf and more — each with its own UV and reapply profile. YOUR SUN DIARY & SKIN LOAD See your cumulative UV load build over the past two weeks, like a training-load chart for your skin. Know when you're in a healthy range and when it's worth a lighter-exposure day. Track burns and recovery. BEST TIME TO TRAIN Planning a session? EnduraSun scans the day's forecast and finds the lowest-UV windows that still fit your schedule. HYDRATION GUIDANCE Get fluid and electrolyte estimates scaled to your activity, intensity, body weight and the day's heat. SMART REMINDERS Reapply prompts and burn alerts fire even when your phone is locked or the app is closed — with no battery drain. EnduraSun is a sun-safety companion, not a medical device. Its estimates are designed to help you make informed decisions about sun exposure — always use sunscreen and seek shade when UV is high. Compatible with Strava.