Halley Software

Am I Drunk?

Estimate your blood alcohol, privately — on your iPhone, iPad, and Apple Watch.

📱 Coming soon to the App Store

For entertainment and informational purposes only. Am I Drunk? is not a breathalyzer or a medical device, and it never indicates that it's safe or legal to drive — at any reading. If you've had any alcohol, don't drive.

Am I Drunk? is a private, fully offline blood-alcohol estimator for iPhone, iPad, and Apple Watch. Log what you drink and it estimates your BAC on your device using the Widmark formula — your drinks, profile, and history never leave your phone.

What it does

Log your drinks as you go
On-device BAC estimate using the Widmark formula
Session history — look back over past sessions
A personal profile that tunes the estimate to you
Track your session on Apple Watch
Works fully offline — no network needed
No ads, no tracking, no accounts

Am I Drunk? Pro

Am I Drunk? Pro is a one-time €2.99 purchase — not a subscription — that syncs your session history and profile across your devices through your own private iCloud. Buy once, restore any time on the same Apple ID.

Privacy first. Am I Drunk? collects no data. No accounts, no analytics, no ads, no trackers. Your blood alcohol is estimated entirely on your device, and your data stays there. Pro sync uses your own private iCloud — we never see it.

Read the full privacy policy →

Terms · Privacy · Support