SunDaily: UV Index & Sun
Daylight, Vitamin D & Exposure
Only for iPhone
Free · In‑App Purchases
iPhone
Know when to get outside with live UV, 10-day forecasts and your best sun windows. Apple Watch daylight counts automatically toward your daily goal.
Build a better outdoor habit with live UV, 10-day forecasts, and automatic Apple Watch daylight tracking.
SunDaily helps you understand when to get outside, how much time you've spent outdoors, and how your sunshine habits change over time.
LIVE UV & 10-DAY FORECAST
See the current UV index, peak UV, cloud cover, sunrise, sunset, and the best windows to get outside.
Tap any day in the 10-day forecast for its full hour-by-hour UV curve. Press and hold to see UV and cloud cover at any time.
APPLE WATCH DAYLIGHT
If you wear an Apple Watch, today's Time in Daylight from Apple Health automatically counts toward your daily goal. You can also log outdoor sessions manually with one tap.
YOUR DAILY SUNSHINE GOAL
Set a daily outdoor goal and see your progress at a glance.
YOUR WORLD, YOUR SUN
Watch the Earth from orbit on an interactive satellite globe, with a gold dot marking exactly where you are.
HISTORY & INSIGHTS WITH SUNDAILY PRO
Unlock:
- Streaks and days this week
- Full history across weeks, months, and years
- Personal insights that compare your patterns over time
- Estimated vitamin D and UV dose
HOME SCREEN WIDGET
See today's progress and UV at a glance without opening the app.
SunDaily Pro includes a 7-day free trial on the annual plan.
Vitamin D and UV dose figures are rough estimates based on your time outdoors and typical UV conditions. They are for wellness reference only and are not medical advice. Consult a healthcare professional for medical guidance.
Privacy Policy:
https://sundaily.app/privacy.html
Terms of Use:
https://sundaily.app/terms.html
EULA:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
A CLOSER LOOK AT EVERY DAY’S SUN
Tap any day in the 10-day forecast for its full hour-by-hour UV curve. Press and hold to see UV and cloud cover at any time, plus peak times and your best windows to get outside.
APPLE WATCH DAYLIGHT, NOW INCLUDED
Today’s Time in Daylight from Apple Health now automatically counts toward your daily goal — no subscription required.
NEW PERSONAL INSIGHTS FOR PRO
See how this week compares with your usual habits, your weekday and weekend patterns, your best days, and how consistently you hit your goal.
REDESIGNED HISTORY
Review your outdoor time with clearer charts and daily averages. Full history across weeks, months, and years is available with Pro.
IMPROVEMENTS
We also improved daily refresh reliability and made UV labels clearer and more consistent throughout the app.
The developer, Arrayio LLC, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Arrayio LLC
- Size
- 6.7 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- SunDaily Pro $4.99
- SunDaily Pro $39.99
- Copyright
- © 2026 Arrayio LLC
