Ok To Drive
When Will I Be Sober?
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Are you ok to drive? Track your alcohol level in real time, get notified when you're clear to drive, predict your hangover, and make smarter choices every night out
Know your limit. Own your night.
We use a medically-informed algorithm — designed alongside doctors — to estimate your Blood Alcohol Content (BAC) in real time, based on your weight, gender, drinks consumed, food intake and fatigue.
How it works
Enter what you're drinking and we do the math. Your BAC updates as the night progresses, giving you a clear picture of where you stand — green, yellow, or red.
What is BAC?
Blood Alcohol Content is the percentage of alcohol in your bloodstream. It peaks 30–70 minutes after drinking. Despite what you've heard, nothing lowers BAC except time — not coffee, not cold showers, not water. We'll tell you exactly when you're clear.
What you get
- Real-time BAC tracking with a traffic light system
- Notifications when you're fit to drive again
- Hydration reminders to stay ahead of the hangover
- Hangover predictions so you know what tomorrow looks like
- Multiple user profiles — track the whole group
- A calendar view of your drinking habits over time
- A home screen widget so your BAC is always one glance away
- A full drink library plus custom drink builder
A word of honesty
Everyone metabolizes alcohol differently. This app gives you a well-informed estimate — not a guarantee. Never use it as the sole basis for deciding to drive.
I built this because I believe people make better choices when they have better information. Consider this your smarter drinking companion, not a substitute for medical advice.
Time-Based Absorption Curve
Your BAC now follows a realistic absorption curve over time, giving you a more accurate picture of where you are — and where you're headed.
Hangover Prediction
We now predict how you'll feel tomorrow based on tonight. Know what's coming before it hits.
Food & Fatigue Intake
A fuller picture means a more accurate BAC. Now factor in what you've eaten and how tired you are — both affect how your body processes alcohol.
Hydration Notifications
Smart reminders to drink water at the right moments throughout the night. Stay ahead of the hangover before it starts.
Quick Add Last Drink
Added another round? One tap to log your last drink again. No searching, no fuss.
The developer, Martin Schurmann, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Martin Schurmann
- Size
- 47.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Frequent
Alcohol, Tobacco, Drug Use or References
- In-App Purchases
Yes
- Ok To Drive Pro $2.99
- Unlock All Features $0.99
- Medium Tip $6.99
- Big Tip $12.99
- Small Tip $2.99
- Copyright
- © MaartenLabs