SunGuard: UV Index & SPF

Now in English, Portuguese, Spanish, and French. Live UV where you are, a reapply timer that adapts to shade, sand, water, and snow, plus home and lock screen widgets.

SunGuard AI helps you understand your skin and stay ahead of the sun.

Find your Fitzpatrick skin type in a quick, tap-only quiz, then get sun guidance tuned to you — the live UV index for your exact location, a smart reapply timer that factors in your SPF and skin type, and gentle alerts before the UV peaks.

NEW — SKIN PROGRESS Take a weekly photo and watch your skin's story unfold. SunGuard reads tone evenness, clarity, calmness, smoothness, and radiance — entirely on your device — and turns them into one simple score you can follow over time. See your before and after, keep your weekly streak, and watch your sun-care habits pay off.

WHAT YOU GET, FREE: • Live UV index and hour-by-hour forecast for where you are • A personal reapply timer based on your SPF, activity, and skin type • Skin Progress — a weekly photo score for tone, clarity, and glow • Before/after comparisons that are actually yours • Know Your Skin — discover your Fitzpatrick type in under a minute • Sunrise, sunset, and the day's sun path at a glance • Smart, local notifications — never spammy

PRIVATE BY DESIGN: The app works fully without an account, and your photos never leave your phone. Skin analysis happens entirely on your device — nothing is uploaded, ever.

SunGuard is a general wellness and educational app. It tracks how your skin looks, not medical conditions. It does not provide medical advice and does not diagnose, detect, or screen for any condition. If you ever notice a new or changing spot on your skin, see a dermatologist. Always consult a qualified professional for any medical concern.