Your Circadian Compass
Discover your natural rhythm
Sundial is a smart pillow that tracks your unique sleep patterns through gentle pressure sensors woven into organic fabric. Unlike invasive trackers, it feels like your favorite pillow while learning your sleep DNA over 7 nights.
Begin Your JourneyHow Sundial Works
Gentle Tracking
Our woven sensor fabric feels like a normal pillow but captures your sleep patterns with precision.
Personalized Guidance
Learn your unique circadian rhythm and receive tailored sleep recommendations.
Sleep DNA
Give us 7 nights and we'll understand your biology better than you know yourself.
The Wow Moment
On day 7, you'll see a perfect circular visualization of your sleep "shadow" — revealing you've been waking 47 minutes before your natural circadian peak. The app will suggest "go to sleep at 10:42pm tonight" and when you do, you'll wake naturally before your alarm, feeling refreshed like someone reset your internal clock.
Experience It Yourself