Healthy Weather

What it does

Healthy Weather tells you exactly when the sun is worth stepping outside for — and when it isn't. Most weather apps stop at UV index. We go further: a science-backed model that calculates your personal vitamin D synthesis based on your skin type, age, cloud cover, and local air quality. No more guessing if 15 minutes at 3pm in November actually does anything. Built for people who'd rather get their D from the sky than a pill.

Weather focused on your health. Vitamin D₃ forecasts, UV index, and sun safety on iOS — with a science-backed model of how your skin produces vitamin D₃ from sunlight.

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  UV SafeJul 2026 · uvsafe.app · ▲6

  Plan your time in the sun

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  VitaminD ExplorerSep 2026 · getvitamind.app · ▲2

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  SunSeek2024 · sunseek.app · ▲228

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  Whether°2019 · apps.apple.com · ▲71

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