TheCircadianBros App

TheCircadianBros App

Track Sun, Vitamin D & Sleep

8 ratings
2 reviews
Free
In-App Purchases

Details

Released
October 23, 2026
Updated
October 29, 2026
TheCircadianBros App screenshot #1 for iPhone
TheCircadianBros App screenshot #2 for iPhone
TheCircadianBros App screenshot #3 for iPhone
TheCircadianBros App screenshot #4 for iPhone
TheCircadianBros App screenshot #5 for iPhone
TheCircadianBros App screenshot #6 for iPhone
🖼️Get Icon
Icons↘︎

About

This app creates a personalized outdoor schedule based on UV forecasts, your skin type, and available time. It provides session durations, sun exposure recommendations, and estimates vitamin D accumulation. Track your progress with streaks and integrate with health data.

✓Personalized daily outdoor schedule
✓UV forecast integration
✓Vitamin D estimation
✓Live session tracking with timer
✓Sleep data integration
✓Streak tracking
Show original description
+1

What's New in TheCircadianBros App

1.01

October 29, 2026

Meet the new TheCircadianBros App, with a fresh look and a calmer, smarter way to get your daily light. NEW - Your Rank: see how your sunlight habits add up (consistency, morning light, sleep, sun safety and more) and compare with friends. - The Moon: after sunset the moon rises on your Home screen with its real phase. Premium members can tap it for tonight's moon reading. - Time you didn't log (Premium): with Apple Health, your end-of-day review finds walks and outdoor time you forgot to track. Confirm what looks right and it counts toward your day. - Sessions no longer end on their own. Stayed out longer? Tell us and the extra time counts. - Winter-friendly vitamin D: on low-UV days you'll see a realistic target for today, so you can still hit what's possible. - Low UV counts too: direct sun at UV 1–2 now earns a little vitamin D. - New share cards, including one for your sleep. IMPROVED - A redesigned Friends page: add friends from one simple button, see when cheers arrived, and get a dot when there's something new. - Home fits smaller phones and larger text sizes. - Clearer Apple Health settings in your Profile. - Better guidance for building your own plan. - A new app icon. FIXED - Rate the App and Friends no longer close the app. - Many smaller fixes and polish. Thank you for getting outside with us. If you enjoy the app, a rating means a lot.

More
2

Subscriptions & In-App Purchases

Premium Monthly

Full access to all premium features.

$4.991 Month
How to cancel TheCircadianBros App subscription ⁉️

User reviews

Go Get Some Sun

An amazing app! The interface is intuitive, and I love how it recommends exposure time based on my skin’s sensitivity to the sun. It also updates my planned time in the sun based on my location, the time of day, the weather, and my skin, making everything feel tailored to me. It’s helping me plan healthier sun exposure throughout the day to boost my vitamin D, and to improve my sleep and overall health. This will be a great tool to use at home or when traveling for work. Highly recommend!
Show more

Great app

The app is well designed and ensures the user is getting safe sun exposure. The reminders are great for someone with a busy schedule who forgets to take breaks outside. And there are a lot of neat features like the research, lux, and wavelengths chart when you tap on the sun.

FAQ

What is TheCircadianBros App?

TheCircadianBros App creates a personalized outdoor schedule based on UV forecasts, your skin type, and available time. It provides recommended session durations, whether to seek direct sun or shade, and estimates vitamin D accumulation.

What features are included in the free version of TheCircadianBros App?

The free version includes your daily plan, live tracking with a running timer, vitamin D estimates, and streak tracking. Premium features are available through subscription.

How does TheCircadianBros App estimate Vitamin D?

Vitamin D figures are estimates modeled from UV data, your skin type, exposure, and time. They are not a measurement of vitamin D in your blood and the app is not a substitute for medical advice.

Can TheCircadianBros App track sleep?

Yes, TheCircadianBros App pulls your sleep data from Apple Health to display alongside your daily sunlight exposure, allowing for a comprehensive view of your day and night.

What are the subscription options for TheCircadianBros App Premium?

TheCircadianBros App Premium is available with monthly and yearly subscription plans. The monthly plan costs $4.99 and the yearly plan is $39.99.

How do I cancel my subscription to TheCircadianBros App Premium?

You can manage or cancel your subscription anytime in your Apple account settings. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period.

What devices is TheCircadianBros App available on?

TheCircadianBros App is supported on iPhone and iPod devices. It is rated for ages 4 and up.

How often is TheCircadianBros App updated?

The app was last updated on October 29, 2026, with version 1.01. This indicates a recent update, suggesting ongoing development and support.