About SleepDawn

Our Mission

SleepDawn was founded on a simple belief: everyone deserves access to reliable, science-based sleep guidance. In a world flooded with sleep myths, unregulated supplements, and one-size-fits-all advice, we set out to build a different kind of resource — one grounded in peer-reviewed research, transparent about its limitations, and designed to meet you wherever you are on your sleep journey.

We don't sell miracle cures. We don't promise that a single hack will fix your insomnia. Instead, we offer a growing library of 116 interactive sleep calculators, evidence-backed knowledge articles, and personalized tools — all built with the understanding that sleep is deeply individual, influenced by your age, biology, lifestyle, and circumstances.

Our Approach to Sleep Health

Sleep sits at the intersection of biology, psychology, environment, and behavior. That's why our tools span such a wide range — from chronotype assessments and shift work planners to GERD sleep protectors and pediatric apnea screeners. We believe that a night shift worker, a new parent, a menopausal woman, and a student with ADHD each deserve tools that reflect their unique reality.

Every calculator on SleepDawn is built on a foundation of published research. Where possible, we cite specific studies, clinical guidelines, and validated questionnaires. We also clearly label tools that are educational or for entertainment purposes, so you always know the difference between a self-assessment and a medical screening instrument.

Our Commitment to YMYL & EEAT

Many sleep topics fall under YMYL (Your Money or Your Life) guidelines — content that can impact a person's health, safety, or well-being. We take this responsibility seriously. Here's how we uphold EEAT (Experience, Expertise, Authoritativeness, and Trustworthiness) standards across every page:

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  Expert Review
  Content is created or reviewed by professionals with backgrounds in sleep medicine, clinical psychology, nursing, pharmacology, and related fields. Author bylines and credentials are displayed on articles.
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  Evidence-Based References
  We cite peer-reviewed journals, AASM clinical practice guidelines, NIH resources, and other authoritative sources. Every knowledge base article includes a reference section.
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  Clear Disclaimers
  Every calculator and article clearly states its limitations. We never position a self-assessment tool as a substitute for professional medical diagnosis or treatment.
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  Regular Updates
  Each page displays a "Last updated" date. We periodically review content against emerging research and update recommendations accordingly.
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  Privacy & Transparency
  We do not store personal sleep data on our servers. Interactive calculators process data locally in your browser. Our affiliate relationships are disclosed, and we never let commercial interests influence our health recommendations.

Meet Our Core Team

SleepDawn is built by a distributed team of sleep researchers, clinicians, writers, and developers united by a passion for making sleep science accessible. While we work with a broader network of contributors, our core editorial and clinical review team includes:

We also collaborate with a wider network of subject matter experts who contribute to specific tools and articles. Interested in joining our expert network? Get in touch.

Our Story

SleepDawn started in 2024 as a side project by a sleep researcher and a developer who shared a frustration: finding reliable, personalized sleep advice online was nearly impossible. Generic tips like "avoid caffeine" and "keep a regular schedule" are useful, but they don't address the why behind individual sleep struggles. Why does one person thrive on 6 hours while another needs 9? Why do night shifts affect some workers more than others? Why does menopause suddenly make sleep elusive?

We began building calculators — small, focused tools that let people input their own data and receive personalized, evidence-based output. The first tools were simple: a nap calculator based on sleep cycle science, and a caffeine metabolism estimator using pharmacokinetic models. The response was overwhelming. People wrote in saying these tools helped them understand their sleep in a way no generic article ever had.

Since then, we've grown to over 116 tools across 11 categories, supported by a comprehensive knowledge base and a growing team of expert reviewers. We remain independent, self-funded, and committed to keeping our core tools free. Our revenue comes from non-intrusive advertising and ethical affiliate partnerships — never from selling user data or promoting unproven supplements.

We're headquartered in Qingdao, China, but our team and users span the globe. Sleep, after all, is a universal human experience.

Contact Us

We value feedback, corrections, and collaboration inquiries. Whether you've spotted an error in a calculator, want to suggest a new tool, or are a clinician interested in contributing, we'd love to hear from you.

For medical emergencies, please contact your local emergency services. SleepDawn is not a medical practice and cannot provide individual clinical advice.