EnduraSun: UV & Sun Safety
Sunscreen timer for athletes
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes
The developer, Conor McElgunn, 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
- Seller
- Conor McElgunn
- Size
- 2.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- Copyright © 2026 EnduraSun. All rights reserved.