Caffeine Tracker

Caffeine Tracker tells you how much caffeine is in your body right now and when to stop for a good night's sleep. Log a flat white, a builder's tea or a can of Monster in one tap. Caffeine Tracker models how your body clears caffeine and shows a live curve for the day, a "last drink by" time for your bedtime, and a reminder before it is too late. Connect Health Connect and see how your caffeine lines up with your sleep. On days you drink coffee late, do you sleep less? Caffeine Tracker compares your own nights and tells you in plain English. WHAT YOU GET • UK drink library: flat white, americano, latte, cappuccino, filter, espresso, builder's tea, Earl Grey, matcha, energy drinks, cola, plus Costa, Pret, Starbucks, Caffè Nero and Greggs menus by size • Custom drinks and favourites for one-tap logging • Live "caffeine in your body" gauge and daily curve • Bedtime cut-off: set your target bedtime and a caffeine limit; the app works out your last-drink time • Last-drink reminder and optional morning summary • Health Connect: writes the caffeine you log, reads your sleep, HRV and resting heart rate • Works with any wearable that syncs to Health Connect, including Pixel Watch, Fitbit, Galaxy Watch, Oura, Garmin and Polar • Sleep & Caffeine: your first insight, free • Home screen widget EVERYTHING FREE FOR 14 DAYS Install, and every Premium feature is unlocked for two weeks — no card needed. After that the core app stays free. PREMIUM • Caffeine Coach: a weekly AI note and answers to questions like "when should my last coffee be today?", grounded in your own numbers • WHOOP integration: recovery score, HRV and resting heart rate next to your caffeine • All sleep insights, unlimited history and 30-day trends • Morning summary notification • Weekly report you can share as PDF, and CSV export of all your data • Personal half-life estimate learned from your own sleep data Premium is a subscription: £4.99 a month or £39.99 a year, each with a 7-day free trial. Manage or cancel any time in Google Play › Subscriptions. PRIVACY Your drinks and Health Connect data stay on your device. If you connect WHOOP, your WHOOP data is stored on our UK server and can be deleted at any time from Settings. No ads, no tracking. Caffeine Tracker shows relationships in your own data. It is not medical advice. WHOOP is a trademark of WHOOP, Inc. Caffeine Tracker is not affiliated with or endorsed by WHOOP.