AlcoInsights turns drinking awareness into three simple steps. Step 1 — Log a drink: one tap for beer, wine, or spirits with size and ABV; manual entries and past-time edits supported. Step 2 — See your estimated BAC: a live BAC estimate with a color-coded zone (green through red), projected peak, and estimated time to reach zero. Estimates are directional and never a substitute for a breathalyzer. Step 3 — Review the week: session history, weekly patterns, goal progress, and — on Pro — AI-generated insights, hangover-risk scoring, and a drinking heatmap. Read our methodology for how BAC is calculated, the Widmark formula assumptions, and known sources of uncertainty.