CIRCADIAN Rhythm Clock: Biorhythm & Sunrise Alarm
Natural Cycles Health & Fitness In-app purchases
Circadian clock & solar rhythm calculator for more energy, focus, sleep & health
- Rating
- 4.1
- 887 ratings
- Downloads
- 193K+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Sep 28
- 2026 ยท v7.4.4
Screenshots
About CIRCADIAN Rhythm Clock: Biorhythm & Sunrise Alarm
Increase your capacity for life with Circadian, the app for applying circadian rhythms!
Circadian uses your local solar time and some user settings to calculate your circadian rhythms, also known as biorhythm. When you live more aligned with your biology, you naturally
- balance your weight
- increase mental clarity & focus
- have more energy
- have super sleep
- boost your mood
- prevent/reverse disease
- live longer
- live a more natural life
CIRCADIAN GIVES YOU CRITICAL REMINDERS & ALARMS
Being a circadian rhythm calculator, Circadian provides you with reminders & alarms to operate on your optimal biological schedule. Start sleeping, waking, eating, fasting, exercising and working when you are meant to.
The light you live under is affecting you more than you can imagine right now. Learning about light and adopting a great light & sleep hygiene is integral to a healthy lifestyle in today's artificially illuminated world.
Becoming aware of solar dawn, sunrise & sunset times is an important step on the way to a more natural lifestyle and biorhythm. Why not set a sunrise alarm or a reminder for the solar time when ultraviolet light (UVA or UVB) appears? You might wonder why this is of significance? You can find out about the relevance of UV light, the problems with artificial light and many other topics affecting your circadian clock in the learn section.
CIRCADIAN HELPS YOU LEARN & IMPLEMENT
The comprehensive learning environment features a growing internal library plus tons of external resources from videos to research papers and blog articles. The learn section provides you with carefully curated content on all things circadian rhythm related. Circadian gives you the needed context fast while handing you all the practical implications for each topic on a silver platter.
Seasonal rhythms, smart sun exposure, sunscreen, sunglasses, grounding, infrared light, peak cognition, exercise, sunrise, solar noon, sunset are some of the topics covered. In no time, you can become an expert on your sleep rhythm, circadian rhythm fasting, blue blockers, natural light, and how it all ties together.
CIRCADIAN RHYTHMS โ A BIT OF SCIENCE ON YOUR CIRCADIAN CLOCKS
Your body's circadian rhythms are 24-hour cycles of biological, hormonal, and behavioural patterns. This biorhythm modulates a wide array of physiological processes, including your body's production of hormones that control your sleep, hunger, and metabolism, ultimately regulating body weight, performance, mood and susceptibility to disease. At least 50% of human gene expression is under circadian clock control. As such, circadian rhythmicity has profound implications for your wellbeing and longevity.
The 2017 Nobel price in medicine was given for research on circadian rhythms. Trillions of circadian clocks in almost all of our cells regulate cellular functioning. All your circadian clocks need to collaborate to orchestrate your biology. Disruption of your circadian clock leads to chaos, inflammation and disease.
Your daily schedule ultimately determines your weight, energy levels, mood, clarity and overall health. Setting a daily schedule that reinforces your bodies circadian & sleep rhythm is the most potent health habit you can adopt. Circadian helps you do precisely that.
Still doubtful?
Consider that circadian disruptions are linked to almost every modern disease from diabetes to cancer? Don't believe it? Google: "shift work" or "circadian rhythm" plus the name of a disease.
Free or paid?
Circadian offers a 7-day free trial period with some functionality and content restricted. To unlock all features and content you need to subscribe or purchase the app.
Credits
Circadian wants to thank Dr Jack Kruse, Dr Alexander Wunsch and Dr Satchin Panda for their pioneering work. Without these brilliant doctors and many others, this solar clock circadian rhythm calculator app would not have been possible.
Circadian uses your local solar time and some user settings to calculate your circadian rhythms, also known as biorhythm. When you live more aligned with your biology, you naturally
- balance your weight
- increase mental clarity & focus
- have more energy
- have super sleep
- boost your mood
- prevent/reverse disease
- live longer
- live a more natural life
CIRCADIAN GIVES YOU CRITICAL REMINDERS & ALARMS
Being a circadian rhythm calculator, Circadian provides you with reminders & alarms to operate on your optimal biological schedule. Start sleeping, waking, eating, fasting, exercising and working when you are meant to.
The light you live under is affecting you more than you can imagine right now. Learning about light and adopting a great light & sleep hygiene is integral to a healthy lifestyle in today's artificially illuminated world.
Becoming aware of solar dawn, sunrise & sunset times is an important step on the way to a more natural lifestyle and biorhythm. Why not set a sunrise alarm or a reminder for the solar time when ultraviolet light (UVA or UVB) appears? You might wonder why this is of significance? You can find out about the relevance of UV light, the problems with artificial light and many other topics affecting your circadian clock in the learn section.
CIRCADIAN HELPS YOU LEARN & IMPLEMENT
The comprehensive learning environment features a growing internal library plus tons of external resources from videos to research papers and blog articles. The learn section provides you with carefully curated content on all things circadian rhythm related. Circadian gives you the needed context fast while handing you all the practical implications for each topic on a silver platter.
Seasonal rhythms, smart sun exposure, sunscreen, sunglasses, grounding, infrared light, peak cognition, exercise, sunrise, solar noon, sunset are some of the topics covered. In no time, you can become an expert on your sleep rhythm, circadian rhythm fasting, blue blockers, natural light, and how it all ties together.
CIRCADIAN RHYTHMS โ A BIT OF SCIENCE ON YOUR CIRCADIAN CLOCKS
Your body's circadian rhythms are 24-hour cycles of biological, hormonal, and behavioural patterns. This biorhythm modulates a wide array of physiological processes, including your body's production of hormones that control your sleep, hunger, and metabolism, ultimately regulating body weight, performance, mood and susceptibility to disease. At least 50% of human gene expression is under circadian clock control. As such, circadian rhythmicity has profound implications for your wellbeing and longevity.
The 2017 Nobel price in medicine was given for research on circadian rhythms. Trillions of circadian clocks in almost all of our cells regulate cellular functioning. All your circadian clocks need to collaborate to orchestrate your biology. Disruption of your circadian clock leads to chaos, inflammation and disease.
Your daily schedule ultimately determines your weight, energy levels, mood, clarity and overall health. Setting a daily schedule that reinforces your bodies circadian & sleep rhythm is the most potent health habit you can adopt. Circadian helps you do precisely that.
Still doubtful?
Consider that circadian disruptions are linked to almost every modern disease from diabetes to cancer? Don't believe it? Google: "shift work" or "circadian rhythm" plus the name of a disease.
Free or paid?
Circadian offers a 7-day free trial period with some functionality and content restricted. To unlock all features and content you need to subscribe or purchase the app.
Credits
Circadian wants to thank Dr Jack Kruse, Dr Alexander Wunsch and Dr Satchin Panda for their pioneering work. Without these brilliant doctors and many others, this solar clock circadian rhythm calculator app would not have been possible.
User reviews
Holistic, positive and wise is how I would describe this app, many thanks.
Lovely, gentle reminders make me more mindful of what I should be doing. Without having to try, I find myself acquiescing to the timetable. Don't even have to wait for the alarm now, the real birds wake me up. Feel better balanced and the eating regime has come into line. Excellent. Interface perhaps a bit wordy, bu...
Gives explanations of the proposed times and links to scientific articles - much better than many apps where you simply have to believe.
Thank you for the App Developers. ๐ ๐
I love ๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐
Update: Installed the updated version. No more crashes. Great app! Trying to reset my circadian rhythm and this really helps. Also, great customer service! Definitely recommend using this app for a circadian rhythm reset.
Frequently asked questions
What is Circadian?
Circadian is an app that helps you apply circadian rhythms to increase your capacity for life. It uses your local solar time and user settings to calculate your circadian rhythms.
What are the benefits of living aligned with your circadian rhythms?
Living aligned with your circadian rhythms can help balance your weight, increase mental clarity and focus, boost your energy, improve your sleep, enhance your mood, prevent/reverse disease, and contribute to a longer life.
How does Circadian provide reminders and alarms?
Circadian provides reminders and alarms based on your optimal biological schedule. It helps you schedule activities such as sleeping, waking, eating, fasting, exercising, and working according to your circadian rhythms.
Why is light important for a healthy lifestyle?
The light we live under has a significant impact on our well-being. Learning about light and adopting good light and sleep hygiene is important in today's artificially illuminated world.
How can Circadian help with learning and implementation?
Circadian has a comprehensive learning environment with a library of resources, both internal and external. It provides curated content on circadian rhythms and practical implications for each topic.
What are circadian rhythms, and why are they important?
Circadian rhythms are 24-hour cycles that regulate biological, hormonal, and behavioral patterns in our body. They impact processes such as sleep, hunger, metabolism, performance, mood, and susceptibility to disease. Circadian rhythmicity has profound implications for well-being and longevity.
How can circadian disruptions affect our health?
Circadian disruptions are linked to numerous modern diseases, including diabetes and cancer. Disruption of circadian rhythms can lead to chaos, inflammation, and disease.
Is Circadian a free app?
Circadian offers a 7-day free trial period with some restricted functionality and content. To access all features and content, you need to subscribe or purchase the app.
Alternatives to CIRCADIAN Rhythm Clock: Biorhythm & Sunrise Alarm
Looking for apps like CIRCADIAN Rhythm Clock: Biorhythm & Sunrise Alarm? Here are 6 similar Android apps on Google Play. The highest rated is Slumber: Fall Asleep, Insomnia (4.3/5), and all 6 are free to download.
-
SleepScoreโข 3.0
-
Mind Detox - Guided Meditation 3.9
-
sleeplus 3.3
-
SnoreApp: snoring & snore anal 4.0
-
Slumber: Fall Asleep, Insomnia 4.3
-
Pzizz - Sleep, Nap, Focus 4.0
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| CIRCADIAN Rhythm Clock: Biorhythm & Sunrise Alarm | 4.1 / 5 | Free | 100,000+ | Sep 28, 2026 | |
| SleepScoreโข | 3.0 / 5 | Free | 100,000+ | โ | Compare |
| Mind Detox - Guided Meditation | 3.9 / 5 | Free | 5,000+ | Feb 10, 2021 | Compare |
| sleeplus | 3.3 / 5 | Free | 50,000+ | Apr 29, 2024 | Compare |
| SnoreApp: snoring & snore anal | 4.0 / 5 | Free | 100,000+ | Mar 31, 2026 | Compare |
| Slumber: Fall Asleep, Insomnia | 4.3 / 5 | Free | 100,000+ | Sep 28, 2026 | Compare |
| Pzizz - Sleep, Nap, Focus | 4.0 / 5 | Free | 500,000+ | Jul 27, 2026 | Compare |
Similar apps on Google Play
- SleepScoreโข
- Mind Detox - Guided Meditation
- sleeplus
- SnoreApp: snoring & snore anal
- Slumber: Fall Asleep, Insomnia
- Pzizz - Sleep, Nap, Focus
- Sleep Theory - Sleep Tracker
- Tinnitus Masker and Relief
- Sensa
- Sleep & Meditation : Wysa
- Breethe - Meditation & Sleep
- ADHD - Cognitive Research
- Meditate & Sleep Hypnosis: MT
- SnoreClock - Do you snore?
- Unwinding Anxietyยฎ
- Kegel Exercises for Women
- Hearoes
- Daily Planner with Calendar
- SnoreLab : Record Your Snoring
- WorldWithin Lucid Dreaming App
- Expand: Beyond Meditation
- Lumenate: Meditation & Sleep
- Kegel Trainer - Exercises
- Perifit
- CalmRadio.com - Relaxing Music
- Relax Music
- Mindleap: Psychedelic Wellness
- Feelyou: Social mood tracker
- Healing Frequencies 2022
- Synctuition MindSpa Meditation
- Zen Radio: Calm Relaxing Music
- Mooditude: Mental Health App
- Sleep Cycle: Sleep Tracker
- Grace: Hypnosis & Meditation
- Muse: EEG Meditation & Sleep
- Relax & Sleep Well Hypnosis
- Kundalini Lounge
- Avrora - Sleep Booster
- Guided Breathing
- Online Therapy, Emotional help
- Chopra: Meditation & Wellbeing
- Mindfulness.com Meditation App
- Reveri: Self-Hypnosis
- enduco - A.I. personal coach
- Pelvina pelvic floor training
- Anxiety Tracker