Sun vs PeakUV

Sun Day is a refined, intelligent tool designed for those who embrace an active lifestyle while maintaining a commitment to skin health. By synthesizing real-time environmental data with your personal health metrics, Sun Day transforms how you interact with the sun. At its core, Sun Day provides a precise, location-aware UV Index, allowing you to make informed decisions about your time outdoors. Whether you are planning a morning run or a weekend at the coast, the app offers the clarity needed to balance sun exposure with safety. Key capabilities include: - Real-time UV tracking: Accurate, location-based data to keep you informed. - Health Integration: Seamlessly syncs with Apple Health to track Vitamin D synthesis, providing a holistic view of your wellness. - Intelligent Alerts: Proactive notifications that guide you on when to seek shade or reapply protection, tailored to your specific needs. - Elegant Interface: A minimalist design that prioritizes readability and ease of use, ensuring you get the information you need without distraction. Sun Day is more than a tracker; it is an essential partner in your daily wellness routine, offering the peace of mind that comes with being prepared.

PeakUV warns you before the UV index climbs — not after you're already burning. Most UV apps show one flat number for your whole town and only alert you once the threshold is already crossed. PeakUV is built differently. PREDICTIVE ALERTS Alerts are computed from the forecast with lead time, so you hear "UV hits 8 around 13:00" before it happens — time to find shade, not a notification after the damage is done. ALTITUDE-AWARE UV rises with elevation, and the published forecast is for the weather model's grid height, not where you're standing. PeakUV corrects to your actual altitude and tells you so — essential in mountain terrain like the Pyrenees and the Alps, where you can climb 1000 m in a single day. AT A GLANCE • Home-screen and lock-screen widgets • Apple Watch app and complication • A clear hourly curve with plain-language severity bands, from Low to Extreme HONEST BY DESIGN This is forecast data, not a measurement from your phone — and we say so plainly. We show "roughly 9 up high," never false precision. Snow glare can add a lot of UV but can't be read from the forecast, so we don't guess at it. We'd rather be honest than fake it. PRIVATE No account, no tracking, no ads. Your location is used only to compute your forecast. You can delete your data any time from Settings. The UV warnings are always free. Available in English, Català, Español, Français, Română, Deutsch, Italiano, Português, 日本語 and 한국어.