SolGlow: Vitamin D Tracker

SolGlow 2.0: one clear answer about your sun, every day. SUN TODAY (NEW) Today now opens on one answer: when your vitamin D window opens — the same UV 3+ hours that call for sun protection — how long until you'd burn, and the protection today's UV calls for. Turn on protection alerts and SolGlow gives you a heads-up when those hours begin. SUN SENSITIVITY (NEW, FREE) Some common medicines make skin burn faster. Tell SolGlow you take one and every burn time gets a cautious margin. Heading to the beach, the lake or the slopes? Pick today's surroundings — sand, water or snow — and the burn math accounts for the extra UV they reflect. MONTHLY SKIN CHECK (NEW, FREE) A guided ABCDE self-exam with a monthly reminder. It helps you learn what's normal for your skin — it never analyzes photos or diagnoses anything. LEARN & SOURCES (NEW, FREE) Plain-language guides to the UV Index, sunscreen, vitamin D in winter, medications and more — each one with the studies behind it, plus how SolGlow calculates every number. MADE FOR IPHONE DUO Open it and Today spreads into two columns, Learn reads like a book, and the Solstice Story pages in spreads. Fold it like a laptop during a sun session and the clock sits up top, readable from your towel, with the controls on the flat half. Stand it like a tent for a one-row scoreboard. ALSO NEW • A start-session button right on the Sun Today card • Smoother share cards and Solstice Stories, and a fix for a story sheet that could open blank • Dozens of reliability fixes across the app, widgets and Apple Watch As always: no accounts, no analytics, no ads. Estimates are educational, not a diagnosis — always consult your clinician about vitamin D and blood testing.