Helios UV

Smart UV Tracking & Alerts

Free · In‑App Purchases

Now built for iPhone Duo: Helios UV fills both displays edge to edge, folded or open. Live UV, burn time for your skin type, and alerts when UV crosses your threshold. Helios UV is a beautiful, no-nonsense UV-index tracker for every Apple device you own. Live forecasts, burn-time predictions tailored to your skin type, threshold alerts, and widgets that follow the sun across your day. WHAT HELIOS DOES • Live UV index — updated hourly from Apple WeatherKit, with 30-second interpolation between samples so the displayed value tracks reality, not the last forecast tick. • Time to burn — personalized to your Fitzpatrick skin type (I–VI), the same six-type scale widely used in dermatology and public-health sun-safety guidance. Helios maps your skin type to a documented minimum erythemal dose and recomputes minutes-to-burn every 30 seconds against the current UV. • Trend you can read — a 24-hour forecast rendered as a Catmull-Rom-spline sparkline, segments colored by UV intensity. See the peak coming, and the safe-time crossings flagged. • Threshold alerts — pick the UV level that matters to you and Helios fires a local notification when the forecast crosses it (Pro). Dangerous-UV safety alerts are free for everyone. • Widgets — Home Screen, Lock Screen, watch face, Smart Stack, macOS desktop, Apple TV dashboard. Pro unlocks every surface. • 12 Pro color palettes — Mono, Mono Teal, Vegas Neon, Pastel, Response, and more. Standard and a colorblind-friendly High Contrast palette are included free. EVERYWHERE YOU WEAR, CARRY, OR SIT One purchase. Five platforms. Each surface drawn for the device it lives on: • iPhone & iPad — full dashboard, two widget sizes, threshold-crossing notifications • Mac — menu bar status item, dashboard window, four widget sizes • Apple Watch — four complications and a Smart Stack tile • Apple TV — a leanback living-room dashboard POWERED BY APPLE WEATHERKIT Every UV reading in Helios comes from Apple's own forecasting pipeline — the same data that powers Apple's built-in Weather app. No scraped feeds, no third-party API in front of someone else's API. PRIVACY Helios has no analytics SDKs, no advertising, no third-party crash reporters, and no Kludge-operated server. Location goes to Apple WeatherKit; subscriptions go to Apple StoreKit; settings stay on your device. Full privacy policy: https://heliosuv.kludgeltd.com/privacy PRICING Helios is free to use with the full UV index forecast and dangerous-UV safety alerts on every Apple device. Helios UV Pro unlocks every color palette, every widget, watch complications, the macOS menu bar item, custom threshold alerts, and the target-UV picker. • Monthly: $0.99/month • Yearly: $9.99/year (best value per month) • Family Yearly: $14.99/year, shareable with up to 6 family members via Apple Family Sharing All Pro tiers include a 7-day free trial. Cancel anytime in Settings → Apple ID → Subscriptions. The minutes-to-burn estimate is a guide, not medical advice. Wear sunscreen, reapply, and consult a dermatologist about your personal sun safety. LEGAL Privacy policy: https://heliosuv.kludgeltd.com/privacy Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

  • 5.0
    out of 5
    1 Ratings

Built for iPhone Duo! The app now fills both displays edge to edge, with the status bar and toolbar in the side strip on the outer display.

The developer, Kludge Ltd, 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 Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Location
  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

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

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • VoiceOver

    • Voice Control

    • Dark Interface

    • Differentiate Without Color Alone

    • Sufficient Contrast

Seller
Kludge Ltd
Size
16.5 MB
Category
Weather
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 15.0 or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
  • Apple TV
    Requires tvOS 17.0 or later.
  • Apple Watch
    Requires watchOS 10.0 or later.
Languages
English and 9 more
  • English, French, German, Irish, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish
Age Rating
9+
In-App Purchases
Yes
  • Helios UV Pro Monthly $0.99
  • Helios UV Pro Yearly $9.99
  • Helios UV Pro Family Yearly $14.99
  • Helios UV Pro Family Yearly $14.99
  • Helios UV Pro Yearly $9.99
  • Helios UV Pro Monthly $0.99
Copyright
© 2026 Kludge Ltd