Best caffeine tracker to improve your sleep.
By knowing your exact caffeine amount at any time in the day, you'll make better decisions about when you want, or not want, to use caffeine.

The most comprehensive caffeine tracker. Try it for yourself.
Caffeine Clock was built to be the best tool for knowing exactly how much caffeine you have remaining. If you're a coffee enthusiast, energy drink lover, or just someone who wants to optimize their sleep, Caffeine Clock is the tracker app for you.
What our users are saying
Caffeine Clock has already helped thousands of people improve their sleep and productivity.
Frequently asked questions
If you have anything else you want to ask, reach out to us.
How is caffeine calculated?
We use scientifically-backed pharmacokinetic models based on caffeine's half-life of approximately 5 hours. The app is taking the drink's absorption rate into account. You can also put in how long it took you to drink it for more accuracy.
Do you need to create an account?
No account is required to use Caffeine Clock. You can start tracking your caffeine immediately after downloading. Caffeine Clock has no online functionality.
Is my data private?
Absolutely. All your caffeine tracking data is stored locally on your device. You can opt-in to sending analytics to improve the app.
Where do you take the drink data from?
Our database includes caffeine content from major coffee chains, energy drink manufacturers, and tea producers. We regularly update our database with new products and verify caffeine content. If there is anything we missed, please reach out to us.
Who is Caffeine Clock made by?
Caffeine Clock was created by Antonín Wingender, a developer and caffeine drink enjoyer based in Prague, Czechia. Hope you enjoy the app!