Helios UV
Smart UV Tracking & Alerts
About
Track the UV index with live forecasts and personalized burn-time predictions based on your skin type. Receive alerts for dangerous UV levels and customize your experience with various color palettes and widgets across all your Apple devices.
What's New in Helios UV
1.0.3
July 21, 2026
• New Apple Watch complication: Sunrise & Sunset - see the next sun event's time at a glance. • Sunset and sunrise times are now astronomically precise, matching Apple Weather. • Offline is handled gracefully - a clear "No internet connection." message instead of endless spinning, with your cached forecast kept on screen. • Learn what the UV index means: a World Health Organization FAQ link in every About screen. • Color and target changes now reach your widgets immediately. • Dozens of fixes: complete translations in all 10 languages, correct time formats everywhere, a fresher watch app on open, better complication battery use, and more.
MoreSubscription plans
Helios UV Pro Monthly
All Pro features. 7-day free trial. Cancel anytime.
FAQ
What is Helios UV?
Helios UV is a weather application designed to track the UV index and provide personalized burn-time predictions based on your skin type. It offers live forecasts, alerts, and widgets for various Apple devices.
Is Helios UV free to use?
Helios UV is free to use with core features like the full UV index forecast and dangerous-UV safety alerts. Additional features such as custom threshold alerts and advanced widgets require a Pro subscription.
What are the subscription options for Helios UV Pro?
Helios UV Pro offers monthly ($0.99/month), yearly ($9.99/year), and family yearly ($14.99/year) plans. All Pro tiers include a 7-day free trial.
How accurate is the burn-time prediction in Helios UV?
The burn-time prediction is personalized to your Fitzpatrick skin type and recomputes every 30 seconds against the current UV index. It uses a documented minimum erythemal dose for estimation.
Does Helios UV have ads?
No, Helios UV does not contain advertisements. The app is committed to privacy and does not include analytics SDKs, advertising, or third-party crash reporters.
On which Apple devices can I use Helios UV?
Helios UV is available on iPhone, iPad, Mac, Apple Watch, and Apple TV. Each platform offers a tailored experience with specific widgets and features.
How often is the UV index updated in Helios UV?
The UV index is updated hourly from Apple WeatherKit. The app also uses 30-second interpolation to ensure the displayed value closely tracks real-time conditions.
Can I cancel my Helios UV Pro subscription?
Yes, you can cancel your Helios UV Pro subscription at any time. Cancellations can be managed through your device's Settings under Apple ID → Subscriptions.