SunSync vs Circadian Reset

Always tired, waking groggy, or struggling to fall asleep? The cause might be simpler than you think — your morning light routine. SunSync syncs your day to the sun. Track sunlight exposure, estimate your vitamin D intake, and get personalized circadian rhythm guidance — all based on your real location and habits. Your body clock controls your sleep, energy, mood, and focus. SunSync helps you work with it — not against it. With SunSync you can: - Track sunlight exposure and daily light habits — know when you've hit your target - Estimate vitamin D from sun exposure based on your skin type and location - Log supplements and monitor your total daily intake - Follow personalized circadian recommendations for your schedule - Discover your best sunlight windows — and when to avoid the UV index - Build routines to improve sleep and melatonin production naturally - Set smart reminders for sunrise, sunset, and wind-down time - Add a home screen widget — see your vitamin D window at a glance, without opening the app - View history and long-term trends to see your progress Built for the biohacking community — and anyone who just wants to feel better. Whether you're optimizing for performance or simply tired of being tired, SunSync gives you the sunlight data your wellness routine has been missing. Vitamin D tracking, body clock alignment, supplement logging, and a home screen widget showing your vitamin D window — in one app. Disclaimer: SunSync provides estimates and general wellness guidance. It is not a medical device and does not replace professional medical advice. Terms: https://martarodriguezm.github.io/SunSyncLegal/terms.html Privacy Policy: https://martarodriguezm.github.io/SunSyncLegal/privacy.html

Dawn is the circadian rhythm reset companion - shift your body clock using scientifically timed interventions: morning bright light exposure, evening light avoidance, low-dose melatonin, and consistent meal timing. The personalized protocol calculates exactly WHEN to apply each intervention based on your current sleep-wake pattern and target schedule. THE TIMING PROBLEM Bright light in the morning advances your clock (makes you sleepy earlier). Bright light in the evening delays it (makes you sleepy later). The same intervention at the wrong time does the opposite of what you want. Without timing guidance, "just waking up at 6 AM" causes sleep deprivation, not circadian adjustment. Dawn gives you the timing. YOUR PERSONALIZED PROTOCOL Complete a short circadian assessment - enter your current natural bedtime, wake time, and target schedule. Dawn generates a day-by-day protocol: which morning to get light exposure, when to dim your lights, when to take low-dose melatonin (0.5mg - the evidence-based chronobiotic dose, not the 10mg sedation dose sold at pharmacies). WHAT DAWN INCLUDES (FREE) - Circadian phase assessment: find out where your body clock currently is - Daily protocol schedule: timed interventions for every day of your reset - Sleep log: track bedtime, wake time, light adherence, melatonin timing - Morning light tracking: the single most important intervention, tracked daily - Melatonin timing guide: the 0.5mg truth that most apps get wrong - Protocol science: plain-English explanations of WHY each intervention works DAWN PRO - THE COMPLETE TOOLKIT - Sleep-wake trend charts: visualize your bedtime shifting toward the target day by day - Jet lag protocol generator: input origin timezone, destination, travel date - get a day-by-day pre-flight and arrival protocol for any timezone pair - Light adherence analytics: track your morning light streak, quality patterns, and protocol compliance - AI Circadian Coach: ask questions about your specific schedule, jet lag, shift work, or any circadian challenge - powered by Grok THE SCIENCE Your suprachiasmatic nucleus (SCN) - a cluster of 20,000 neurons behind your eyes - controls every biological process on a 24-hour rhythm. It is set by light, melatonin, and meal timing. Dawn applies the same interventions used in chronobiology research: photic entrainment via morning light, chronobiotic melatonin at physiological doses (0.3-0.5mg), meal timing to synchronize peripheral clocks. This is not a sleep tracker. It is a clock-shifting tool. WHO DAWN IS FOR - Night owls who need to wake earlier for work or school (delayed sleep phase) - Jet-lagged travelers who need to recover faster (or pre-shift before flying) - New parents whose sleep has been completely disrupted - Shift workers managing rotating schedules - Anyone whose natural bedtime has drifted and needs resetting Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/