Cooldown vs Caffeine Half Life

Cooldown guides you toward moderation by helping you drink at a reasonable pace. Slowing down each drink can help you avoid embarrassment, hangovers, and blackouts. With Cooldown, you can: - Count each of your drinks, using your iPhone or Apple Watch - Set a target time between drinks - View a running average time per drink, and an average time per completed drink - Review every drink you've had since you started your session This app does NOT give you an estimate of your blood alcohol content (BAC). If you've had anything to drink, DO NOT drive or do anything else that's illegal or dangerous while under the influence. No one involved in the creation of this app is a doctor, and this app shouldn't be used for medical purposes, or as a replacement for treating alcoholism. If you think you have a medical problem, seek help from a medical professional.

Caffeine Half Life helps you estimate how caffeine leaves your system over time — so you can make more informed choices about sleep and energy. Highlights - Personalized elimination curve using your profile (e.g. smoking, pregnancy, oral contraceptives) when you choose to provide them - Sleep-readiness estimates based on your bedtime and caffeine threshold — approximate only - Apple Health: optional read/write for dietary caffeine, plus HRV correlation on the chart so you can spot patterns (you control permissions) - Widgets and Apple Watch complications for quick glances — including a trend graph complication - Interactive chart — drag to inspect caffeine levels and HRV at any time of day How it works The app uses a simplified pharmacokinetic model (Bateman equation) to estimate caffeine absorption and elimination based on your personalized half-life. Factors like age, BMI, activity level, smoking, pregnancy, and oral contraceptives adjust the half-life up or down from the ~5-hour population average. Important: This app is for general wellness and educational purposes. It is not medical advice and not a medical device. All estimates are approximate — individual metabolism varies. Consult a healthcare professional for health decisions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/