☕ BrewPrint
⚡ Caffeine, timed around your sleep

Plan your caffeine around the sleep you want.

Log every cup, watch it fade across your day, and get an estimated cutoff for your last one before bed.

Download on the App Store See how it works

iPhone · iOS 17+ · 100% offline · no account

BrewPrint Today screen: 344 of 400 mg caffeine today, within limit, with the live caffeine curve.

Everything you need to time caffeine well

A simple daily plan, built around when you actually sleep.

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Live caffeine curve

See your estimated caffeine rise and fade across the day, drink by drink.

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Sleep cutoff

Set your bedtime and get an estimated cutoff time, a rough guide for planning your last cup.

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Daily limit

Pick a limit and track how close you are, at a glance, every day.

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Fast logging

Coffee, tea, energy drinks, sodas, and your own custom entries in a couple of taps.

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Reminders you set

Optional local nudges for a morning cup, your cutoff, and anything you choose.

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Private by design

No account, no cloud, no analytics. Your logs aren't sent to us or any server.

A look inside

Your day, your limit, your cutoff. All on your device, only on your device.

BrewPrint Energy screen showing today's caffeine timeline and active window. BrewPrint History screen showing a 7-day caffeine bar chart and recent entries. BrewPrint log sheet: pick a coffee, tea, or energy drink and log it in seconds.

100% offline. No account. Nothing collected.

BrewPrint runs entirely on your iPhone. There are no servers, no sign-up, no tracking, and no third-party SDKs, so there's nothing to leak. Your logs never leave your device. App Store privacy label: Data Not Collected.

No account No cloud sync No analytics No ads No tracking

The science, kept honest

Caffeine peaks about 30 to 60 minutes after you drink it and has a half-life of roughly 5 hours, so plenty can still be active near bedtime.

Free guides: caffeine half-life calculator, how long does caffeine last, and when to stop drinking coffee.

For reference only, not medical advice: caffeine peak and half-life figures per the Institute of Medicine, Pharmacology of Caffeine (NCBI). One study found that caffeine consumed 6 hours before bed reduced self-reported sleep duration (Drake et al., Journal of Clinical Sleep Medicine, 2013). All figures are population averages and vary significantly by person. BrewPrint is a personal tracking tool, not medical advice and not a medical device. See our Medical Disclaimer.

Find your peak. Plan your last cup.

Annual or one-time Lifetime access. New subscribers can start with a free trial.

Download on the App Store