Caffeine Tracker: Sleep & Log

How much caffeine is in your body right now — and what time should you stop to sleep tonight? Caffeine Tracker logs what you drink and shows your live caffeine level using a half-life model, so you can watch it rise and fall through the day. Unlike daily-limit apps, it also works backward from your bedtime to tell you the last time to have caffeine and still sleep well. HOW IT WORKS - Log a drink in two taps — pick from the built-in list, set the number of cups. - Watch your live level on the home gauge and see when it clears. - Get your last recommended time to have caffeine before bed. - Rate your sleep and learn how caffeine affects your nights. FEATURES - Live caffeine gauge powered by a half-life model - Bedtime cutoff — the last time to have caffeine before sleep - Two-tap logging with a cups slider (0.5, 1, 1.5 ...) - Built-in drink list — coffee, tea, soda, energy drinks and more - Add your own drinks and set their caffeine in mg - History and weekly charts to spot your patterns - Caffeine vs sleep insight — compare intake on good and bad nights - Daily limit gauge (default 400 mg, adjustable) - Korean and English PRIVATE BY DESIGN - Works fully offline. Your data stays on your device. WHO IT IS FOR - Anyone sensitive to caffeine who wants better sleep - People cutting back or watching their daily intake - Coffee and energy drink lovers who like seeing their data Caffeine tracker, coffee tracker, caffeine intake and half-life — open, log, done. Track your caffeine, protect your sleep. Start today.