Caffeine Clock vs Your Normal

Track your caffeine and sleep better. See exactly when today's coffee wears off. Caffeine Clock is a caffeine tracker that models absorption and half-life to estimate how much caffeine is in your system throughout the day. Log what you drink or eat, see how levels rise and fall, and plan your last cup so you can sleep with confidence. Accurate tracking with absorption rate Not just totals. Caffeine Clock models how quickly you absorb caffeine and how it declines (half-life), then estimates your level now and later. If you note how long you sipped that cappuccino, the curve updates accordingly. A clear, actionable dashboard An attractive graph shows your current level, projected decline, and how much caffeine you'll have at any time. Long-press to scrub the timeline and reveal exact values. At a glance, know whether you're in the clear - or whether another cup will push you past your comfort zone. Interactive Home Screen Widgets Monitor your stats without even opening the app. View your live caffeine curve and current mg count directly on your Home Screen. Need to log a refill? Use the quick-add widget to track your favorites with a single tap - keeping your data accurate with zero friction. Sleep-aware insights Set a target bedtime. If your projected level looks high by then, Caffeine Clock lets you know early, often before you even add a drink, so you can adjust your cut-off and protect tonight's sleep. Tuned to you A quick setup captures your habits and sensitivity, and you can adjust your personal caffeine half-life at any time in Settings, so the curve matches how your body actually clears caffeine. 200+ drinks, plus your own Choose from a built-in database of coffees, teas, and energy drinks, or create custom drinks with your own sizes and mg. Fast logging means better tracking. Thresholds and gentle alerts Pick a daily caffeine limit that fits your routine, whether that is the commonly cited 400 mg for adults or the 200 mg guideline many people follow during pregnancy. Get timely reminders before you overdo it. Apple Health Send every logged drink to Apple Health so your caffeine sits next to your sleep and the rest of your health data. Private and fully offline No account, no signup. Your data stays on your device, with an option to transfer locally. Caffeine Clock works fully offline. Anytime, anywhere. Made for everyday routines Whether it's espresso at 8, tea at 2, or an energy drink before a workout, Caffeine Clock shows how today's choices affect tonight's sleep, so you can enjoy what you love without second-guessing it. How it works - Log a drink from the 200+ library or use the quick-add widget. - The app models absorption and half-life to estimate your level over time. - Watch the live caffeine curve and countdown on the dashboard or Home Screen. - Set a bedtime and get informed if you may still be "too caffeinated" by then. Why a dedicated caffeine tracker? Caffeine affects everyone differently. A general health app won't tell you when a 3 PM latte will still be in your system at 10 PM. Caffeine Clock focuses on one job: timing your intake for better days and better nights. Get started in minutes Install, finish the onboarding, log your first drink, and watch your caffeine curve come to life. Disclaimer Caffeine Clock provides estimates based on published half-life ranges and your inputs. It's for informational purposes only and is not a medical device or a substitute for professional advice.

The Health app collects plenty of numbers and leaves them to you. Your Normal reads them and says, in plain words, what each one means. Free to download. Without a trial, the Today tab with your mood, adding a restriction and the Apple Watch app work. The free 10-day trial unlocks everything, and after it the Diary stays free too. The Values tab with trends and charts is part of the full version, a one-time purchase. IT COMPARES YOU WITH YOU For most values, how far you are from your own average matters more than any published norm. A resting heart rate of 58 means nothing until you know yours is usually 51. From ninety days the app works out your normal, the range a value usually stays in for you, and shows it in the overview together with the distance from your average. When a value stays outside your normal for three days or more, it says so, when it last happened and what your diary said then. IT SAYS WHEN IT DOES NOT KNOW When there are not enough days for a reliable comparison, it says so instead of comparing. Values nothing measures in Health are hidden but not concealed: the app tells you how many there are. IT ACCOUNTS FOR WHAT IS HAPPENING TO YOU After surgery or during illness you can enter a restriction. The app then stops judging what you cannot influence anyway, such as fewer steps after ankle surgery. For those values the personal average is counted only from the date of the procedure, so you are not compared with a time when you could still walk. While a restriction runs, the app shows how far you are from your level before it. HOW YOU FEEL, BESIDE THE NUMBERS One tap logs how you feel. A watch measures heart rate, not how you feel, and where the numbers and your own sense disagree is often more useful than either on its own. The diary can be filled in up to fourteen days back. ON YOUR WATCH Apple Watch shows the readiness score and the values worth a look, and logs how you feel with one tap. The iPhone does the reading and sends the watch only a finished summary. TRENDS A month, three months, six months or a year. Weight and walking keep a full year of history, because a single reading on the scales means little while the direction over a year means a lot. WHAT IT TRACKS Sleep and recovery: duration, deep sleep, REM, efficiency, resting heart rate, heart rate variability, respiratory rate, wrist temperature. Activity: steps, active energy, exercise time, stand time, distance, cardio fitness, walking heart rate. Metabolism: average glucose, time in range, variability, daily low, weight, BMI, body fat. Vitals: heart rate, blood oxygen. Workouts: type and length from the past three days. PRIVACY The app only reads from Health and never asks for permission to write. Health data is never stored or sent anywhere — it is loaded each time you open the app and stays in memory. No account, no network code of its own, no analytics; the App Store handles the trial and the purchase. The only things kept on the phone are what you enter yourself: your name, photo, a restriction and the mood diary. The iPhone sends the watch a short summary directly, over the system's encrypted channel. You can save the diary and the restriction to a file, but only when you tap to do so. The interface is available in English and Czech. DISCLAIMER This is not a medical device. It does not diagnose anything or recommend treatment; it only describes what measured numbers usually mean. If something is wrong, follow your doctor, not this app.