UV Index, Vitamin D & Sunburn

Tanning, SPF & sun tracker

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

4.0 is here: your own burn time and vitamin D minutes, a 14-day Tan Plan, a 7-day planner, and free sun logging with streaks. Every number computed for your skin. Most UV apps show you a number. UVSiesta tells you what that number means for your skin, today, in minutes. Six quick questions work out your Fitzpatrick skin type. Add your age, the SPF you actually use and what you are wearing, and every figure in the app is computed for you instead of read off a generic table. YOUR NUMBERS, NOT AVERAGES • Burn time in minutes for your skin, your SPF and today's UV • The exact minutes of sun that reach your daily vitamin D target, in IU • A narrow personal sun window — 12:45–13:10, not "sometime between 10 and 4" • Real cloud attenuation measured against clear-sky UV, so an overcast day changes the plan instead of a disclaimer BUILD THE HABIT, FREE • Log sun time in two taps. No timer, no subscription • Streak, daily progress ring and full history • A morning brief with today's real numbers • Live UV index, the hourly curve and today's peak PREMIUM • Guided vitamin D and tanning sessions with flip reminders • A 14-day Tan Plan that adapts to the tolerance you have actually built • 7-day sun planner • Clinical vitamin D: enter your 25(OH)D blood result for a personal target and a 12-week projection • UV for any location worldwide • Ideal-window and tan-plan notifications WHEREVER YOU LOOK Home and Lock Screen widgets, a Live Activity on the Dynamic Island while a session runs, and an Apple Watch app with complications — all reading the same personal numbers. BUILT ON PUBLISHED SCIENCE Exposure is weighted by the UVB response curve rather than a flat elevation threshold, doses are integrated across the hours you are actually outside, and every recommendation is capped at a safe ceiling for your skin type. 28 peer-reviewed references are cited in the app. UVSiesta gives estimates to support healthy sun habits. It does not diagnose or treat anything and does not replace medical advice. If you have a skin condition, take photosensitising medication, or are managing a vitamin D deficiency, talk to your doctor. Premium is an auto-renewing subscription. The price and duration are shown before you buy. Payment is charged to your Apple Account, and it renews unless you cancel at least 24 hours before the period ends. Manage or cancel in your Apple Account settings. Terms: https://www.savekong.ca/tos Privacy: https://www.savekong.ca/privacy

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

4.0 is the biggest release since launch. UVSiesta now computes everything for you personally instead of picking a row out of a table. YOUR OWN NUMBERS A six-question Fitzpatrick quiz, plus your age, SPF habit and clothing, now drive every figure in the app: burn time, vitamin D minutes and your daily IU target. A REAL SUN WINDOW Instead of "sometime between 10 and 4", you get a narrow window built from today's hourly UV curve — and it stretches automatically when cloud cuts the UV. SUN LOGGING IS NOW FREE Log sun time in two taps, keep a streak, watch the daily ring fill. No timer and no subscription needed. History and the morning brief are free too. 14-DAY TAN PLAN (PREMIUM) Session lengths adapt to the tan you have actually built, and step back down if you stop. 7-DAY SUN PLANNER (PREMIUM) See which day this week is worth going outside for. The first two days are free. CLINICAL VITAMIN D (PREMIUM) Enter your 25(OH)D blood result for a personal target, a projection from the sun you log, and a re-test reminder. An estimate, not medical advice. ALSO IN THIS RELEASE • Real cloud attenuation from clear-sky data instead of a fixed multiplier • Widgets and the Apple Watch app show live progress • Fully translated into 48 languages • Faster, more reliable notifications

Version 4.0

The developer, Blinds Planet Inc, 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:

    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Blinds Planet Inc
Size
  • 22.2 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 16.0 or later.
  • iPhone
    Requires iOS 16.0 or later.
  • iPad
    Requires iPadOS 16.0 or later.
  • Mac
    Requires macOS 13.0 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.
Languages
English and 46 more
  • English, Afrikaans, Amharic, Arabic, Armenian, Azerbaijani, Bengali, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, Georgian, German, Greek, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kazakh, Korean, Latvian, Lithuanian, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Spanish, Swahili, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
Age Rating
13+
  • 13+
  • Learn More
  • Infrequent
    Medical Treatment information

    Contains
    Health or Wellness Topics
In-App Purchases
Yes
  • Monthly Subscription $7.99
  • Yearly Subscription $34.99
  • 3 Month Subscription $9.99
  • Learn More
Copyright
  • © 2026 Savekong INC
  • Privacy Policy

    • You Might Also Like