SipLogger: Alcohol Tracker

TRACK YOUR DRINKS. SEE YOUR ESTIMATED BAC CURVE. 100% FREE.

SipLogger is an educational alcohol metabolism tracker that visualizes your estimated blood alcohol content over time. Log your drinks and watch your estimated BAC curve rise and fall in real time — all powered by the Watson Total Body Water method and the Widmark formula.

For educational and informational purposes only. The estimated BAC accuracy is approximately ~20%.

HOW IT WORKS

1. Set Up Your Profile Enter your weight, height, biological sex, and age — or let SipLogger read them from Apple Health. These values personalize the Watson + Widmark formula for more accurate estimates.

2. Log Your Drinks Choose from 40+ built-in drink templates or create custom drinks with any volume and ABV. Each drink is timestamped for precise absorption modeling.

3. Review Your Sessions See your estimated BAC curve, review when your level approaches baseline, and browse your complete session history.

KEY FEATURES

◉ Real-Time Estimated BAC Curve Watch your estimated blood alcohol content rise and fall as a smooth chart. See absorption, peak, and metabolism phases visualized over time.

◉ Watson + Widmark Formulas Scientifically-grounded BAC estimation using the Watson Total Body Water method combined with the Widmark formula. Personalized by weight, height, sex, and age.

◉ 40+ Built-In Drinks Beer, wine, spirits, cocktails, and more — each with pre-configured volume and ABV. Create custom drinks with any volume and alcohol percentage.

◉ Drink Pace Modeling Each drink's absorption is modeled individually based on timing. See how spacing affects your estimated BAC curve.

◉ Live Activities Monitor your active session from the Lock Screen and Dynamic Island. See the current estimated BAC and time to approach baseline at a glance.

◉ Apple Health Integration Optionally read weight, height, biological sex, and age from HealthKit. Read-only — SipLogger never writes to Health and never transmits your data.

◉ Session History & Diary Review past sessions with drink logs, estimated peak BAC, session duration, and time to approach baseline.

◉ 8 Languages English, Ukrainian, Polish, French, Spanish, German, Czech, and Italian with full localization.

IMPORTANT DISCLAIMER

SipLogger is an educational and informational tool only. Estimated BAC values have approximately ~20% accuracy and vary based on food intake, hydration, medications, and individual metabolism. Never use estimated BAC to make decisions about driving or operating machinery. This app does not encourage alcohol consumption.

Rated 18+. Intended for adults of legal drinking age.