
Caffeine Half-Life Calculator
Track how long caffeine stays in your body & optimize sleep
What it does
Estimate how long caffeine stays in your system with our Caffeine Half-Life Calculator. Track energy levels, sleep disruption, and dose timing using science-based metabolism models tailored to your sensitivity and lifestyle.
Does a similar job
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- CCCaffeine Clock – A beautiful and accurate caffeine tracker appOct 2025 · caffeineclock.app · ▲14
Hi guys! I would love to show you Caffeine Clock 2.0, a tracker I made that shows you your caffeine levels now and in the future, helping you have undisrupted sleep by timing your caffeine better. A bit of context - as a guy who drinks a lot of caffeine, I wanted to make a good caffeine tracking app for a long time, since nothing I found at the time was sufficient. I wanted to make an app that would be easy to use, show you exactly when you’d have enough caffeine to not have your sleep disrupted, and could add all the drinks I usually drink, for free. After several iterations, I am now…
Caffy: Caffeine & SleepJun 2026 · apps.apple.com · ▲4Know your caffeine level and when you'll be ready to sleep



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Today marks ten years, 3653 consecutive days, of running at least one mile every day under the USRSA rules [1]. To celebrate, I built an interactive dashboard that turns a decade of GPX files into charts you can explore. Running has truly changed my life: I've made lifelong friends, explored beautiful places, and more importantly invested into my own health and fitness, which I'm starting to see the positive benefits as I get older. The stack is pretty simple: a NextJS app, with a Postgres database to keep all my running data, and all the stats are pre-computed and cached in Redis, so I…
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