Caffeine Clock: Track Caffeine

AWSoftware

In-app purchases

About this app

Track your caffeine with the best caffeine tracker in the Play Store.

TRACK YOUR CAFFEINE - AND IMPROVE YOUR SLEEP

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 sleep.

COMPREHENSIVE, TAILORED ONBOARDING

Start strong with a quick setup that captures your preferences and sensitivity. Of course, you have the ability to set them however you like.

200+ DRINKS—PLUS YOUR OWN

Choose from a built-in database of coffees, teas, and energy drinks, or create custom drinks with your own sizes and mg. Fast logging means better tracking.

THRESHOLDS, ALERTS, AND COACHING

Pick a daily caffeine threshold that fits your routine. Get gentle alerts before you overdo it and suggestions that keep you on track.

FULLY OFFLINE AND PRIVATE BY DESIGN

No account, no signup, no cloud. Your data stays on your device, with the option to transfer it via local network. Caffeine Clock works fully offline —anytime, anywhere.

MADE FOR EVERYDAY ROUTINES

Whether it’s espresso at 8, tea at 2, or an energy drink before a workout, Caffeine Clock shows how today’s choices affect tonight’s sleep—so you can enjoy what you love without second-guessing it.

HOW IT WORKS
• Log a drink from the 200+ library or add a custom drink
• The app models absorption and half-life to estimate your level over time.
• See the live caffeine curve and countdown on the dashboard
• Set a bedtime and get informed if you may still be “too caffeinated” by then

WHY A DEDICATED CAFFEINE TRACKER
Caffeine affects everyone differently. A general health app won’t tell you when a 3 PM latte will still be in your system at 10 PM. Caffeine Clock focuses on one job — helping you time your intake for better days and better nights.

GET STARTED IN MINUTES

Install, finish the onboarding, log your first drink, and watch your caffeine curve come to life. Make smarter choices today—and sleep with confidence tonight.

DISCLAIMER

Caffeine Clock provides estimates based on published half-life ranges and your inputs. It’s for informational purposes only and is not a medical device or a substitute for professional advice.

Ratings and reviews

I really like the app, just wish that the image upload for custom beverages would work. No error or explicit failure, just closes down the image picker and says nothing. (I think this may be a permissions thing, it hasn't requested storage access as a permission, so maybe the upload is not working correctly via that?)

What a great app. Really easy to use gives you all the relevant information regarding your caffeine intake. Small feature request: allow more customization period on the sip time; it's not uncommon for me to finish a cup of coffee in two hours or more.

Love this app! very visually appealing, no sign in, and very easy and intuitive to use. I just wish it synced with Samsung Health, or has Wear OS support/implementation. having caffeine tracking at a glance on my wrist would be great!

What's new

Time Update:
- Made time and date display consistent across the board
- You can now set your preferred time or date format in the onboarding or in settings!
- There is a new Date & Time Settings section
- small fixes