Circadian: Your Natural Rhythm

Circadian: Your Natural Rhythm

Wellness & health cycles clock

659 ratings
343 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • October 5, 2020
  • June 14, 2026

Features

Circadian: Your Natural Rhythm screenshot #1 for iPhone
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Circadian: Your Natural Rhythm screenshot #9 for iPhone
Circadian: Your Natural Rhythm screenshot #10 for iPhone
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About

Optimize your daily activities by syncing with natural rhythms. This app helps you wake, eat, move, work, and rest at optimal times for improved energy, clarity, and sleep. It leverages sunlight, seasons, and scientific principles to guide your lifestyle for better health.

Sync daily activities to natural rhythms
Optimize wake, eat, move, work, and rest times
Align with sunlight and seasonal patterns
Seasonal sleep and meal timing calculator
In-app library on chronobiology and health
Set reminders for critical circadian events
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What users say

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What's New in Circadian

4.0.8

June 14, 2026

We improved automated time updates and added various minor fixes. Thank you for your support, Team Circadian

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Subscription plans

Monthly Subscription

Monthly Subscription

$2.991 Month
How to cancel Circadian subscription ⁉️
12

In-App Purchases

$49.99

Lifetime Purchase - 33% Off

One-off purchase with 33% discount

User reviews

Best circadian app!

I absolutely love this app! It has completely changed my awareness of light and optimizing my time outdoors for the best benefits. I love the reminders and how they adjust to the correct time when I travel. Plus, it’s easy to use and they have excellent customer service whenever I’ve had a question. Highly recommend this one!!
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updates??

this app would be amazing if I didn’t have to constantly change the location back and forth to where I live so the times are correct, it doesn’t update on its own otherwise and keeps telling me the wrong times which is honestly frustrating

Very inaccurate

Currently the app shows the sunrise at 06:11 in Brighton , UK , however all other apps indicate the sunrise at 06:32. And many other inconsistencies.

Times not accurate

I don’t look at Circadian every day, but today I noticed it has the wrong times for sunrise and sunset. Example: app says sunset is 7:24, while real sunset time is 7:50.

I double checked the city it is set at and the date and time of day and those are all accurate.

What happened???
If it doesn’t know the correct sunrise and sunset times, how can any of the other times be accurate?
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Love this

Love this app and cannot explain it enough! Knowing the times of everything makes holding my rhythm so easy. Use this everyday!

User experience

🐞

Reported Bugs

4 issues

Alarms not working properly

Bug

Location and timezone issues

Bug

Crashes and freezes during use

Bug

Notifications not updating with changes

Bug

Requested Features

5 requests

Customizable alarms and notifications

Feature

Integration with other health/fitness apps

Feature

Historical data tracking and trends

Feature

Personalized recommendations based on user data

Feature

Widget and Apple Watch support

Feature

FAQ

What does Circadian: Your Natural Rhythm do?

This app helps you align your daily activities, such as waking, eating, moving, working, and resting, with your body's natural rhythms. By syncing with sunlight, seasons, and scientific chronobiology, it aims to improve your energy levels, mental clarity, and sleep quality.

What are the key features of Circadian?

Key features include optimizing your daily schedule based on natural rhythms, aligning your lifestyle with sunlight and seasonal patterns, a seasonal sleep and meal timing calculator, and an in-app library with extensive resources on chronobiology and health. It also allows you to set reminders for important circadian events.

How much does Circadian cost?

The app offers a free starting point with no credit card required, allowing you to try its features. It also has in-app purchases, suggesting that some advanced features or content may require payment.

Who is Circadian for?

This app is designed for individuals who want to enhance their well-being by living more in sync with nature's cycles. It's particularly beneficial for those looking to improve sleep, boost energy, balance mood, and support a healthy metabolism through scientifically-backed lifestyle adjustments.

How does Circadian use scientific principles?

The app is built on Nobel Prize-winning chronobiology, explaining how light, hormones, and the environment influence your well-being. It educates users on the importance of morning sunlight, darkness at night, and robust rhythms for guarding against chronic disease and optimizing health.