Kairos: Daily Rhythm Planner

Kairos maps your day using chronobiology — the peer-reviewed science of biological rhythms.
YOUR CIRCADIAN ADVANTAGE
Your brain, body, and energy follow predictable 24-hour cycles. Research shows cognitive peak is mid-morning, creative flow rises in late morning, and physical peak hits mid-afternoon. Kairos makes this science actionable.
6 ACTIVITY WINDOWS
See your optimal hours for:
• Focus — deep work and problem-solving
• Wellness — exercise and physical performance
• Creativity — brainstorming and creative flow
• Social — communication and collaboration
• Finance — decision-making and strategy
• Relationships — emotional connection
HOURLY PEAK GUIDE
The Timing tab shows a science-backed schedule for all 24 hours — each slot backed by published research on circadian biology, cortisol cycles, melatonin timing, and ultradian rhythms.
THE SCIENCE BEHIND IT
Built on research by Till Roenneberg, Russell Foster, and Matthew Walker. Each recommendation cites the specific biological mechanism driving it — not guesswork, not superstition.
PERSONALIZED TO YOU
Enter your birth date to calibrate your chronotype (morning lark or night owl). Kairos adjusts your peak windows to match your natural rhythm.
DAILY STREAK
Track your daily planning streak and history to see how your energy patterns evolve over time.
17 LANGUAGES SUPPORTED
English, Japanese, Chinese, Korean, Spanish, French, German, and more.
Work with your biology, not against it.
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