Know exactly when to stop. Clearday tracks your blood caffeine level in real time and finds your personal cutoff — backed by science, powered by Apple Health.
One tap to record coffee, tea, energy drinks, or anything with caffeine. Quick access to your recent favorites.
Watch your blood caffeine rise and fall in real time. Know exactly how much will be in your system at bedtime.
Clearday learns from your Apple Health data and calculates your personal caffeine cutoff time for better sleep.
Clearday displays your personal Apple Health data for informational purposes only. It does not provide medical advice, diagnosis, or treatment.
Whether you want to quit, reduce, or just time it right — Clearday adapts to you.
Go caffeine-free with a guided 9-day withdrawal timeline. Track symptoms and get daily coaching based on clinical research.
Gradually lower your intake. See your weekly trend drop over time while monitoring how your body responds.
Keep your caffeine — just time it right. Get a personal cutoff time so you sleep better without giving up coffee.