# Healthy Weather: Vitamin D — Track UV, Sun & Air Quality

> Track UV, Sun & Air Quality (iPhone/iPad app by Max Skupch.)

- Source: https://appshunter.io/ios/app/healthy-weather-vitamin-d/id6760667940 (this page in markdown: same URL + `.md`)
- Developer: [Max Skupch](https://appshunter.io/developer/1885620940)
- Category: Weather, Health & Fitness
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.1 · 11 MB
- Languages: English
- Released: 2026-03-30
- Data updated: 2026-07-09
- User reviews in markdown: https://appshunter.io/ios/app/healthy-weather-vitamin-d/id6760667940/reviews.md

## What is Healthy Weather?

Healthy Weather: Your Daily Sun & Vitamin D Guide

Healthy Weather turns sunlight into something you can actually plan around. See exactly when your body can make vitamin D, how strong the UV is, and how much sun you've had — in a clean, science-backed app that runs entirely on your device.

At its heart is a custom Vitamin D Index that models how your skin produces vitamin D₃ from sunlight — using your skin type, age, exposure and live conditions, not a generic chart.

Free Features:
- Today at a glance: your Vitamin D window, sun-risk hours, feels-like and current conditions
- A plain-language daily summary of your sun day
- Tap any tile for an explanation and a mini graph
- Vitamin D Tracker: 5 free sessions to try it out

Premium Features (free 14-day trial):
- Vitamin D Tracker (unlimited): Start a session and watch your skin's vitamin D₃ production in real time — live IU per minute, a running total, and a saturation indicator that tells you when you've had enough sun. Review every past session with detailed Vitamin D Index, UV, synthesis-rate and saturation charts. Built on published science, not guesswork.
- 7-Day Forecast: Day-by-day Vitamin D window, UV, temperature and rain outlook so you can plan your sun ahead
- Detailed Graphs: Vitamin D Index, UV, solar altitude, feels-like and precipitation through the day, with smooth interactive charts
- Ad-Free & Beautiful: A clean, premium interface that puts your health data front and center

Private by design:
Everything runs on your device. No account, no sign-up, no analytics — your tracking history never leaves your iPhone. Weather data is provided by Apple Weather.

Subscription Information:
Healthy Weather offers a Monthly plan. Payment is charged to your App Store account after the 14-day free trial. The subscription auto-renews unless canceled at least 24 hours before the end of the current period. You can manage or cancel anytime in your Apple ID settings.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Healthy Weather Monthly | $0.99 | per month |



## Version history (last 5 releases)

### 1.3 — 2026-07-05

Healthy Weather is now faster, more private, and fully on-device.

- Rebuilt to run entirely on your iPhone, powered by Apple Weather — no account, no servers, your data never leaves your device.
- Redesigned Today dashboard: tap any tile for a plain-language explanation and a mini graph.
- Detailed session history: every Vitamin D session now shows Vitamin D Index, UV, synthesis-rate and saturation charts.
- The forecast now includes per-day graphs in every info popover.
- A cleaner, more focused design throughout.

### 1.2 — 2026-06-12

Introducing the Vitamin D Tracker.

Start a session and watch your body produce vitamin D in real time — based on the live UV, sun angle, and your own skin type, age, and exposure.

- Live IU per minute and a running daily total
- A saturation indicator showing when your skin has had enough sun
- Saturation that carries over and recovers between sessions, using your local session history — just like your body does
- Manual cloud override for when the forecast doesn't match your sky

### 1.1 — 2026-04-23

A big update: 7-day forecast, a free tier, and tap-to-explain on everything.

- 7-day forecast with Vitamin D hours, air quality, rain, and temps
- Current and Overview now free - no subscription needed
- Tap any data point for a plain-language explanation
- New precipitation chart and barometric pressure
- Smoother graph scrubbing, min/max ranges, background data loading
- Cleaner settings, no more onboarding screen

### 1.0.2 — 2026-04-01

Minor improvements to the user experience and interface polish.
- Vitamin D section renamed for clarity
- Added peak times for Vitamin D Window, Sunrise & Sunset
- Cleaner graphs with rounded values for temperature, feels like, solar altitude & air quality

### 1.0.1 — 2026-03-30

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-09.*