# SunSync - Circadian Tracker

> Sunlight, Vitamin D & Sleep

Canonical page: [https://chrome-stats.com/d/id6762293528](https://chrome-stats.com/d/id6762293528)

## Overview

- **ID:** `id6762293528`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Marta Rodriguez
- **Category:** Health & Fitness
- **Version:** 2.2
- **Last updated:** 2026-06-24
- **First published:** 2026-04-23
- **Size:** 22 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/sunsync-circadian-tracker/id6762293528)
- **Website:** [https://martarodriguezm.github.io/SunSyncLegal/index.html](https://martarodriguezm.github.io/SunSyncLegal/index.html)
- **Privacy policy:** [https://martarodriguezm.github.io/SunSyncLegal/privacy.html](https://martarodriguezm.github.io/SunSyncLegal/privacy.html)

## Description

Morning light protocol, vitamin D tracking, circadian alignment — everything your wellness routine needs in one app.

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

## Rankings

- #2,141,665 — Overall

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- [Opsin: Circadian Sun & Sleep](https://chrome-stats.com/d/id6788143818) — 5.00 / 5
- [Sunshine — Vitamin D Tracker](https://chrome-stats.com/d/id6755173558) — 5.00 / 5
- [Sun-Day](https://chrome-stats.com/d/id6760581712) — 1.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6762293528)