Guides for sun days.
Answer-first guides to the UV index, skin types and sunscreen, plus honest round-ups of the best tanning and UV apps.
Best of
The Best Tanning Apps for iPhone in 2026, Compared
Seven tanning apps for iPhone compared as of October 2026, from burn-time timers to AI skin scans, with what each one is best for and a quick comparison table.
Best of
The Best UV Index Apps for iPhone (October 2026)
Seven UV index apps for iPhone and Apple Watch compared, from the built-in Apple Weather to UVLens and Sunbeam, with what each one does best as of October 2026.
Alternatives
SunSafe Alternatives: 6 UV and Tanning Apps for iPhone (2026)
Looking for an app like SunSafe? Six iPhone alternatives compared as of October 2026, from burn-time timers to UV widgets, with what each does better.
Guide
The UV Index Explained — What Each Level Means for Your Skin
What the UV index measures, the five WHO levels from low to extreme, why UV peaks around solar noon, and how clouds, altitude, skin type and burn time fit in.