Last Call: Caffeine Half-Life

One question, one number. Last Call answers the question checkout-line coffee raises: how much caffeine will still be in your log when you lie down? Tap what you drank — the app does published half-life arithmetic and shows MG AT BED, your milligrams right now, the decay curve, and a last-call cutoff: the latest you can order and still be at or under your target by bedtime. WHAT IT DOES • Tap-to-log: 182 preset drinks with hand-checked milligram values, plus free-form custom entries. • One-tap re-log: your recent drinks sit as pills under the number — tap one to log it again. Star your usuals and they pin to the top of the quick-add list as Favorites. • Setup that asks nothing of you: no quiz, no jargon, no caffeine-science knowledge needed. Pick a bedtime (or let the app suggest one from your sleep schedule) and start logging — that's the whole setup. • Optional bedtime from your sleep…