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
1.1.0
September 9, 2026
• Two new Pro palettes: Mono Pink and Mono Blue. • Your palette now colors the dashboards, widgets, and complications, sunrise/sunset icons, stale badges, and warnings follow your chosen theme. • Apple Watch, rebuilt under the hood: complications refresh in the background, phone pushes arrive while the watch sleeps, and your target and skin type stay in sync between devices. • Subscriptions are steadier: Pro survives offline launches, billing grace periods, and going fully off-grid; the watch no longer briefly forgets you subscribed, and it unlocks right after you subscribe on iPhone. • Sunrise, sunset, and burn times are more accurate - daylight-saving safe, clamped to real daylight, and consistent across the app, widgets, and complications. • Stale indicators on Apple Watch, Apple TV, and every widget, plus the reason a refresh is failing. • Dozens more fixes: friendlier offline and error messages in all 10 languages, widgets that never freeze or go backward in time, onboarding that fits every screen, VoiceOver polish, 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.