Circadian: Your Natural Rhythm

Natural Cycles

In-app purchases

About this app

🌟 OPTIMIZE YOUR NATURAL CYCLES & BIORHYTHMS TO RISE, SLEEP, THINK AND EAT AT IDEAL TIMES
Do you ever feel out of sync with your natural cycles? Circadian is the premier circadian app and circadian rhythm app for wellness living. By tuning into your circadian rhythm and honouring your biorhythm, you unlock deeper rest, balanced energy and a true sense of wellness.

☀️ ALIGN WITH SUNLIGHT & SEASONS
This circadian rhythm app harnesses daylight cues—from a gentle sunrise alarm clock to a sunset alarm at dusk—to guide your day. Replace rigid clock alarm schedules with your internal circadian clock. Trust your biorhythm and natural cycles to steer every phase, and use your sunrise alarm clock reminders to start strong.

🛏️ BEDTIME ALARM CLOCK & BIORHYTHM CALCULATOR
Plan restful nights with our bedtime alarm clock feature and robust biorhythm calculator. Anchor bedtime to dusk and wake refreshed with a rise sleep reminder. Check my circadian clock dashboard for personalised insights, and track my circadian rhythm progress with ease.

🍴 EAT & FAST IN SYNC WITH NATURE
Intermittent fasting works best when aligned to daylight. Front-load calories at sunrise and close your eating window by sunset to support natural cycles and achieve better sleep. Use the daily planner to schedule meals, then lock in healthy habits with reminders from the biorhythm calculator.

🧬 THE SCIENCE OF CIRCADIAN RHYTHM
Built on Nobel Prize–winning chronobiology, this circadian rhythm app explains how your internal clock and biorhythm regulate melatonin, cortisol and vitamin D production. Getting the right circadian cues—light, darkness, food and exercise—is at the core of natural cycles. Explore our in-app library for actionable tips that boost wellness living.

🌅 YOUR NATURAL ALARM CLOCK
Wake gently with a sunrise alarm clock or morning alarm clock, then drift off with the circadian rhythm alarm clock feature. Customise your clock alarm and enjoy seamless transitions with multiple sunset alarm cues. Let the circadian rhythm alarm clock become your daily guide. With this comprehensive circadian rhythm alarm clock, you’ll master your sleep cycle and wake cycle.

☘️ ENJOY TRUE RHYTHM & WELLNESS
As a genuine natural cycles app and circadian app, Circadian empowers wellness living by honouring your circadian rhythm and embracing natural cycles. Embrace your biorhythm, trust your circadian clock and thrive in balanced health. Download now and start your journey to lasting wellness living.

🗝️ KEY ASPECTS
• Natural cycles app: align routines with dawn, sunrise, sunset and darkness
• Bedtime alarm clock & biorhythm calculator: optimise your sleep cycle and fasting windows
• Sunrise alarm clock & morning alarm clock: greet each day with ease
• Circadian rhythm alarm clock & clock alarm: seasonal cues for waking and winding down
• Circadian clock dashboard & my circadian clock: personalised insights at a glance
• Biorhythm calculator & rhythm calculator: synchronise meals, movement and rest
• Daily planner & lifestyle planner: map your daily routine planner time table around natural cycles
• Embrace better sleep, vibrant energy and wellness living

🚀 DOWNLOAD CIRCADIAN NOW to experience the ultimate circadian app and circadian rhythm app—step into harmony with your natural cycles and my circadian rhythm.

Ratings and reviews

I love the idea behind this. So much so that I did buy the full membership, so I own it forever now. Having said that, the app does seem really glitchy. After the second day I stopped receiving notifications. I emailed customer service and although the response time was good, the answer received was not helpful and did not solve my problem. I force stopped the app, which did seem to help for 12 hours or so, but as of right now, zero notifications. Not even alarms are going off.

Update - was emailed promptly about this issue, which is rare these days for apps. They corrected the issue within a few hours of me reaching out. I absolutely LOVE this app and have been using it for years. It really has helpede be more aware of my time spent inside, reminding me to get outside. A+ app and customer service Update erased my plan and settings, and is telling me I now have to pay a one time fee to use all the notifications that I previously used and paid for with my annual plan.

I think the project idea is cool, but the app doesn’t look very professional and it doesn’t support my native languages. A thematic icon would be great!

What’s new

We are very happy to introduce translations.
You can now select English, Chinese, German and Spanish.

We're actively working to improve Circadian.
Feel free to contact us at [e-mail] if you have any issues, feedback, suggestions, or questions.

Mind your rhythm, mind your light ☀️
Team Circadian