The One
Sleep Center
Free tools to help you sleep better tonight — and every night after. No signup required.
🔊 Tap below to enable sleep sounds on your device
Mix rain, ocean, white noise and more. Set a sleep timer and drift off.
Find out how much sleep you owe your body and how to pay it back.
Wake up feeling refreshed by timing your alarm to your natural sleep cycles.
Enter your wake time and get your ideal bedtimes based on sleep science.
Find your last safe coffee time so caffeine doesn't wreck your sleep.
The right nap at the right time refreshes you. The wrong one ruins your night.
Log your sleep nightly and spot patterns that are sabotaging your rest.
Track the connection between your sleep and mental health over time.
A quick quiz to find your #1 sleep sabotager and what to do about it.
Tap any sound to toggle it on/off. Mix multiple sounds together.
How many hours of sleep did you actually get this week?
Sleep cycles last ~90 minutes. Waking at the end of a cycle means you wake up feeling rested.
Based on your wake time, here are your ideal bedtimes for full sleep cycles.
Caffeine has a half-life of ~6 hours. Here's when to stop so it doesn't disrupt your sleep.
The science of napping is all about timing. Get it right and you'll feel amazing.
Log your sleep tonight. Patterns emerge over time.
Track both daily to see the connection between sleep and how you feel.
Answer 5 quick questions to find your #1 sleep sabotager.