Safe-to-sleep time
A live caffeine curve shows when you drop below your sleep line and the last coffee that still leaves you clear at bedtime.
App Details
Track the caffeine in your body, see when it is safe to sleep, and learn how your coffee timing affects your nights.
Log a coffee or tea in one tap, or pick from nearly 30 built-in drinks, your own drinks or a barcode scan. Adenal adds up every drink from the last 48 hours using your caffeine half-life and draws a live curve through to tomorrow morning, with the time you drop below your sleep line and the latest cup that still leaves you clear at bedtime. Record going to bed, nights and naps, and how sleepy you feel; after 14 nights, Adenal compares caffeine at bedtime with how long and how well you slept. Everything works without an account and stays on your phone; an optional account backs up your data and syncs it between Android and iPhone. Free, with a small ad banner on three screens. Caffeine values are estimates, not medical advice.
Logging in one tap
Coffee and tea shortcuts, nearly 30 built-in drinks, a barcode scanner and a home screen widget.
Insights from your own nights
After 14 nights, see what caffeine at bedtime does to how long and how well you sleep.
