Sundog vs Sun Tracker

Most people either avoid the sun entirely or stay out too long. Sundog helps you do neither. Built around four science-backed goals, Sundog gives you a personalized daily sun schedule — calibrated to your skin type, the live UV index, and real-time cloud cover. A smart timer tells you exactly how long to be outside, and your burn limit is always visible so you know when to head back in. Four Goals. One Routine. - Circadian Reset — Morning light sets your body clock for the day. A short session before 9am resets your sleep-wake rhythm, lifts mood, and sharpens focus. - Vitamin D — Midday UVB is your window. Sundog times your session to maximize D synthesis and stops automatically before you reach your burn limit. - Gradual Tan — Afternoon light has lower UV intensity. Sundog schedules your exposure when the risk is lowest and the result is real. - Sleep Optimization — Evening golden-hour light cues melatonin production, making it easier to fall asleep and stay asleep. Smart, Not Just Simple Sundog's timer isn't a countdown — it's a calibrated recommendation. It reads the live UV index and adjusts your session length automatically. Heavy cloud cover? Session extended. UV extreme? Pulled back. Your burn limit is always front and center. Built Around Your Skin Set your Fitzpatrick skin type once. Sundog uses it to calculate your personal burn limit at any UV level and adjust every session recommendation accordingly. Skin type I gets very different guidance from skin type V. Time-Window Gating Each goal has a scientifically appropriate time window. Circadian Reset is a morning-only session. Vitamin D is gated to the midday UVB window. Sleep Optimization surfaces in the evening. You always know whether your window is open, closing soon, or already passed for the day. Sun Tracker A visual emoji-based tracker shows your progress across the day — which sessions you've completed, which are still open, and what's coming up next. Daily Sun Insights Every day, Sundog surfaces a new insight — practical, evidence-based tips on UV, circadian biology, and getting more from your time outside. Available in English and Spanish. Sundog is designed for general wellness purposes only. It is not a medical device and does not provide medical advice. Consult a qualified healthcare professional before changing your sun exposure habits, particularly if you have a skin condition, a history of skin cancer, or are taking photosensitizing medications. UV exposure carries inherent risks. Always use appropriate sun protection.

Discover a smarter way to enjoy the sun with Sun Tracker: UV & Vitamin D — the intelligent sunlight companion designed to help you optimize sun exposure, monitor UV levels, and support healthy Vitamin D production while staying safe. Whether you love sunbathing, outdoor fitness, beach activities, walking, hiking, or simply want to improve your wellness routine, Sun Tracker gives you the real-time tools and insights you need to make better sunlight decisions every day. Unlike ordinary weather apps, Sun Tracker focuses specifically on safe and effective sun exposure. The app combines real-time UV index monitoring, exposure timing, location-based solar tracking, and personalized recommendations to help you benefit from sunlight without overexposure. REAL-TIME UV INDEX TRACKING Monitor live UV index levels based on your current location and time of day. Instantly understand sunlight intensity and know when UV conditions are safe, moderate, high, or dangerous. Get smarter insights about: • UV intensity • Sunlight conditions • Daily UV forecasts • Outdoor exposure safety ⏱ SMART SUN EXPOSURE TIMER Avoid excessive sunlight exposure with intelligent timing tools designed for safer sunbathing and outdoor activities. The app helps you: • Estimate safe exposure duration • Track sunbathing sessions • Receive exposure reminders • Reduce the risk of overexposure and sunburn VITAMIN D OPTIMIZATION Sunlight plays a major role in natural Vitamin D production. Sun Tracker helps you maximize sunlight benefits more effectively by identifying optimal exposure windows throughout the day. Perfect for users who: • Want healthier sunlight habits • Need help optimizing daily sun exposure • Enjoy outdoor wellness routines LOCATION-BASED SUN DATA Get accurate sunlight information customized for your geographic location. Track: • Sunrise time • Sunset time • Solar noon • Daylight duration • Local UV conditions Whether you are at home, traveling, at the beach, or outdoors, the app adapts to your location automatically. UV ALERTS & SUN SAFETY Stay protected with smart alerts and notifications designed to help reduce harmful UV exposure. Features include: • High UV warnings • Exposure notifications • Smart reminders • Safer outdoor planning TRACK YOUR SUN HABITS Build healthier sunlight routines with exposure tracking and activity monitoring. Monitor: • Daily exposure sessions • Sunlight trends • Outdoor activity patterns • Personal progress over time PERFECT FOR • Sunbathing enthusiasts • Outdoor fitness lovers • Beachgoers • Athletes • Walkers and hikers • Wellness-focused users • People monitoring sunlight exposure WHY USERS LOVE SUN TRACKER • Simple and clean interface • Accurate UV tracking • Helpful sunlight insights • Smart exposure guidance • Fast and lightweight experience Sun Tracker makes it easier to enjoy the benefits of sunlight while helping you stay aware of UV conditions and safer exposure practices. Download Sun Tracker today and enjoy smarter, safer, and more informed sun exposure every day. DISCLAIMER: This app provides general informational guidance only and does not replace professional medical advice, diagnosis, or treatment. Our Terms of use and Privacy policy for the app can be found below: Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://sites.google.com/view/suntrackerpolicy/home