Caffeine Clock

Caffeine Clock is a caffeine tracker that provides accurate tracking, translating into better decision making for your life. Log what you drink or eat, see how caffeine is absorbed and cleared over time, and plan your last cup so you can sleep soundly.

ACCURATE TRACKING WITH ABSORPTION RATE CALCULATION

Not just totals. Caffeine Clock models how quickly you absorb caffeine and how it declines (half-life), then estimates how much is in your system right now – and later in the day. You can even set how long you’ve drank that cappuccino – and it updates correctly.

BEAUTIFUL, ACTIONABLE DASHBOARD

A clean, atrractive graph on the dashboard shows your current level, projected decline, and how much caffeine you’ll have at any time. Long press to scrub through the graph to show the correct values! At a glance, you’ll know if you’re in the clear or if another cup will push you past your comfort zone.

SLEEP-AWARE INSIGHTS, WHEN THEY MATTER

Set your target bedtime. If your projected level is calculated to be high when you go to sleep, Caffeine Clock lets you know early, before you even add a drink — so you can adjust your cut-off time and protect tonight’s slee