UV Index & SPF: Burnline

Know exactly how long you can stay out before you burn. Burnline turns the UV index into the only number that matters: minutes. Your skin type, today's UV, the SPF you actually put on — one countdown, updated as the sun moves. TODAY'S BURN LINE See your time to burn right now, and the hour it gets dangerous. The full day curve shows when to go out and when to find shade. BUILT FOR YOUR SKIN, NOT AN AVERAGE Fitzpatrick skin type, not a generic timer. And because almost nobody applies sunscreen at the lab rate, Burnline models what SPF 30 really gives you rather than what the bottle claims. WORKS WITH NO SIGNAL The day's UV curve is computed on your phone from the sun's position. On a beach, abroad, with no roaming — it still works. YOUR SEASON, RECORDED Every day you got it right. Burn-free days, time outside, and the record that builds over a summer. VITAMIN D, THE OTHER SIDE In winter…