CoffeePolice

What it does

Everyone says, "Stop caffeine 8 hours before bed." I did. Still slept terribly. Turns out, generic rules don't work; your cutoff depends on your bedtime, sensitivity, and how cups stack. Coffee Police shows real-time active caffeine, calculates YOUR cutoff time, recommends drinks by the hour, and generates sleep impact reports that make the pattern undeniable. Free. No ads. No subscription. Just clarity on when to stop.

Free caffeine tracker app. Monitor your coffee intake, see how caffeine affects your sleep, and get personalized recommendations. Track caffeine half-life and optimize your sleep schedule.

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  Hey HN, I often don't know if I can have a coffee at 2pm and started logging my caffeine intake so I wouldn't be up until 2am. For me it was never as easy as a cut off time (ie stop coffee at 1pm) because I vary the amount and timing of my coffee day to day. I made an app that helps you stay in your custom 'daytime target range' and under your 'bedtime target' caffeine level. It can predict how much caffeine you'll have at bedtime and tell you what time your caffeine will be below a configurable sleepable level. I also added a feature that gives you a notification 30 minutes before you can…

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