MYCIRCADIAN

MyCircadian tracks sunrise, sunset, UV exposure, vitamin D, and moon phases, while logging sun sessions and offering tools like a lux meter and compass for optimal health.

Download

What makes us the best app for you

Log Sun Sessions

The sun session timer provides a recommended sun exposure time based on your skin type, clothing, cloud cover, and estimated UV index. This helps build a solar callus and supports vitamin D production but is not a replacement for medical advice. Use the timer for guidance only

Log Sun Sessions

The sun session timer provides a recommended sun exposure time based on your skin type, clothing, cloud cover, and estimated UV index. This helps build a solar callus and supports vitamin D production but is not a replacement for medical advice. Use the timer for guidance only

Moon Tracker

Sync with lunar cycles to enhance hormone balance and overall wellness

Moon Tracker

Sync with lunar cycles to enhance hormone balance and overall wellness

Compass

Easily locate sunrise and sunset directions using the app's compass

Compass

Easily locate sunrise and sunset directions using the app's compass

Lux Meter

Monitor lux levels to support healthy circadian rhythms and mood

Lux Meter

Monitor lux levels to support healthy circadian rhythms and mood

UV index

Track real-time UV index for precise sun exposure data, beyond typical weather app estimates

UV index

Track real-time UV index for precise sun exposure data, beyond typical weather app estimates

Vitamin D availability

Synthesize vitamin D with UVB exposure based on time, season, and location

Vitamin D availability

Synthesize vitamin D with UVB exposure based on time, season, and location

Ambassadors

Sarah Kleiner

Creator of MyCircadianApp, Board Certified in Quantum Biology with 14+ years of experience optimizing health, nutrition, and circadian rhythms for modern life.

Dr. Alexis Cowan, PhD

Scientist, communicator, and innovator in light biology, mitochondrial medicine, and metabolism.

Dr Sara Pugh

PhD in Biophysics specializing in light biology, quantum and circadian science, integrating ancient wisdom with modern health practices since 2010.

Dr. Valerie Giangrande

Practicing Optometrist and Quantum Biology Coach, transformed by circadian science, now guiding others in circadian health for lasting change.

Becky Niles

Quantum Biology Practitioner and Health Coach, helping clients find lasting health with holistic, circadian-based practices. Founder of BNC community, certified by NASM and Quantum Biology Collective.

Zaid K. Dahhaj

Circadian Optimization Coach. Father. Driven by Obsession, Vitality, Circadian Biology, Mother Nature, & Decentralized Medicine.

Alysia

Alysia, creator of @thesourcejunkie on Instagram, has always been passionate about sunlight and light codes. Inspired by circadian rhythms, she’s excited to help you discover the benefits in your own life.

Hear it from our users

200,000+

People have changed their lives with this information from SKW on Circadian Biology, Quantum Biology and Nutrition.

Frequently asked questions

What’s the difference between free & paid?
My UVB bar went away - what happened?
Why are there slight differences in times and UV index between MyCircadianApp & other apps?
Why doesn’t the level of vitamin D the app says I have made - match with the level of Vitamin D I just had measured on a blood test?
How does LUX impact my health?
How can I get the most accurate measurement of LUX using the app & why do the readings vary?

What’s the difference between free & paid?
My UVB bar went away - what happened?
Why are there slight differences in times and UV index between MyCircadianApp & other apps?
Why doesn’t the level of vitamin D the app says I have made - match with the level of Vitamin D I just had measured on a blood test?
How does LUX impact my health?
How can I get the most accurate measurement of LUX using the app & why do the readings vary?

What’s the difference between free & paid?
My UVB bar went away - what happened?
Why are there slight differences in times and UV index between MyCircadianApp & other apps?
Why doesn’t the level of vitamin D the app says I have made - match with the level of Vitamin D I just had measured on a blood test?
How does LUX impact my health?
How can I get the most accurate measurement of LUX using the app & why do the readings vary?