--- title: "SunSync - Circadian Tracker - Reviews, Revenue and Downloads in Bulgaria | Apple App Store" description: "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" --- # SunSync - Circadian Tracker — Bulgaria > Sunlight, Vitamin D & Sleep ![SunSync App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/63/eb/3c/63eb3caf-ceb9-1530-ba41-c352a7fd5f9e/AppIcon-0-0-1x_U007ephone-0-11-0-85-220.png/434x0w.png) **Developer:** [Marta Rodriguez](https://apptail.io/developer/marta-rodriguez-aenvkc) **Category:** Health Fitness **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** rodriguez.marta.SunRhythm **Store:** Apple App Store **Country:** Bulgaria **Version:** 3.0 (released 2026-10-18) **Original Release:** 2026-04-23 **Languages:** Arabic, Bulgarian, Hindi, German, Spanish, English, Portuguese, Danish, Russian, Chinese, Hebrew (modern), French, Finnish, Hungarian, Greek (modern) **App Store Link:** [Download on Apple App Store](https://apps.apple.com/bg/app/app/id6762293528) **AppTail Page:** [https://apptail.io/app/sunsync-circadian-tracker-YSTz/bulgaria](https://apptail.io/app/sunsync-circadian-tracker-YSTz/bulgaria) ## SunSync Description 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: Privacy Policy: ## SunSync Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/e6/57/81/e6578104-3cb9-8889-33f5-6048951f1284/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2026-04-22_at_15.05.20.png/1320x2868.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c1/32/59/c13259a8-ff58-2425-4546-0fefb4f2664b/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2026-04-22_at_15.06.05.png/1320x2868.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a5/f0/77/a5f077d5-82d0-cffe-6000-c6dcbf562985/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2026-04-22_at_15.06.28.png/1320x2868.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/d5/7a/84/d57a847b-be06-bc62-a885-fb3cb59a501b/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2026-04-22_at_15.06.31.png/1320x2868.png) ## SunSync Available In - [United Arab Emirates](https://apptail.io/app/sunsync-circadian-tracker-YSTz/united-arab-emirates) - [Bulgaria](https://apptail.io/app/sunsync-circadian-tracker-YSTz/bulgaria) - [Czechia](https://apptail.io/app/sunsync-circadian-tracker-YSTz/czechia) - [Germany](https://apptail.io/app/sunsync-circadian-tracker-YSTz/germany) - [Denmark](https://apptail.io/app/sunsync-circadian-tracker-YSTz/denmark) - [Algeria](https://apptail.io/app/sunsync-circadian-tracker-YSTz/algeria) - [Finland](https://apptail.io/app/sunsync-circadian-tracker-YSTz/finland) - [Greece](https://apptail.io/app/sunsync-circadian-tracker-YSTz/greece) - [Hungary](https://apptail.io/app/sunsync-circadian-tracker-YSTz/hungary) - [Israel](https://apptail.io/app/sunsync-circadian-tracker-YSTz/israel) - [India](https://apptail.io/app/sunsync-circadian-tracker-YSTz/india) - [North Macedonia](https://apptail.io/app/sunsync-circadian-tracker-YSTz/north-macedonia) - [Mexico](https://apptail.io/app/sunsync-circadian-tracker-YSTz/mexico) - [Norway](https://apptail.io/app/sunsync-circadian-tracker-YSTz/norway) - [Panama](https://apptail.io/app/sunsync-circadian-tracker-YSTz/panama) - [Russia](https://apptail.io/app/sunsync-circadian-tracker-YSTz/russia) - [Sweden](https://apptail.io/app/sunsync-circadian-tracker-YSTz/sweden) - [United States](https://apptail.io/app/sunsync-circadian-tracker-YSTz/united-states) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*