Light by The Circadian Bros

Light by The Circadian Bros

Circadian Rhythm, UV & Sleep

9 ratings
4 reviews
Free
In-App Purchases

Details

Released
October 23, 2026
Updated
November 5, 2026
Light by The Circadian Bros screenshot #1 for iPhone
Light by The Circadian Bros screenshot #2 for iPhone
Light by The Circadian Bros screenshot #3 for iPhone
Light by The Circadian Bros screenshot #4 for iPhone
Light by The Circadian Bros screenshot #5 for iPhone
Light by The Circadian Bros screenshot #6 for iPhone
Light by The Circadian Bros screenshot #7 for iPhone
Light by The Circadian Bros screenshot #8 for iPhone
🖼️Get Icon
Icons↘︎

About

This app provides a personalized daily plan to optimize your body's natural rhythm using light exposure. It guides you on when to seek sunlight, how long to stay outside, and when to wind down for better sleep, considering your skin type and local UV forecasts.

✓Daily light plan based on sunrise and UV forecast
✓Personalized sun and shade session guidance
✓Estimated vitamin D tracking
✓Live Activity and Dynamic Island integration
✓Ability to log past outdoor time
✓Spectral light breakdown (UV-B, UV-A, visible, infrared)
✓Sleep tracking integration with Apple Health
Show original description
+1

What's New in Light by The Circadian Bros

1.02

November 5, 2026

Meet Light, by The Circadian Bros! - A whole new look: calmer, brighter, easier to use - Buddy guides your day, and Luna takes over at night - A new Plan trail that shows your light sessions from sunrise to sunset - Log time outside you forgot to track - Mix-and-match outfits for more accurate sun estimates - Existing members: enjoy a free month of full access, on us - Try it free for 7 days with the yearly plan - Smarter re-planning, offline saving, and lots of fixes

More
2

Subscriptions & In-App Purchases

Premium Monthly

Full access to all premium features.

$6.991 Month
How to cancel Light by The Circadian Bros subscription ⁉️

User reviews

Necessary app for being healthy

The sun is healing! This app helps me stay on top of my focus and tan. It’s free, and I’d recommend it to everyone serious about health habits.

Highly recommend

This app helps you get sun exposure the right way couldn’t recommend enough

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 Light's subscription cost?

Light offers a Premium Monthly plan for $6.99 and a Premium Yearly plan for $39.99. The yearly plan includes a 7-day free trial for eligible new subscribers.

How does Light help with my body clock?

Light creates a daily plan based on your sunrise, UV forecast, and skin type. It guides you on when to get morning light, vitamin D windows, and evening light to align with your natural circadian rhythm.

Can I manage my Light subscription?

Yes, subscriptions renew automatically unless canceled at least 24 hours before the current period ends. You can manage or cancel your subscription anytime in your Apple Account settings.

Does Light track vitamin D accurately?

Light provides estimated vitamin D figures based on UV data, your skin type, and exposure. These are not blood measurements, and the app is not a medical device. Always use your own judgment to avoid sunburn.

What devices does Light support?

Light is available for iPhone and iPod devices, as indicated by its compatibility.

How often is Light updated?

The app was last updated on November 5, 2026, with version 1.02, suggesting regular updates to improve functionality and features.

What age rating does Light have?

Light has an age rating of 4+, making it suitable for a wide range of users interested in health and wellness.

Does Light have ads?

No, Light does not contain advertisements. It is a subscription-based application, ensuring an ad-free user experience.