So you're going out tonight? Or maybe you're taking it easy and having a few friends over? Either way, you should probably be paying closer attention to how much alcohol you drink.

BAC Calculator gives you a quick calculation of your approximate BAC level as well as a countdown timer to Soberville. (ATTENTION: Soberville is not a real place or state of being. The 'Countdown to Sober' is merely an estimate of when your BAC will reach 0.00. We have to say this for the same reason coffee cups have to warn you that the coffee inside may be VERY HOT!)

You can also take care of business on your Apple Watch and view your BAC level in the complication on your watch face.

The Apple Watch app can be run separately from the iPhone app. This means they do not share data! could measure your BAC on your Apple Watch and let your friend measure theirs on your phone. But after your friend falls in love with the app we'd appreciate it if you ask him to buy it. Thank you.

To add or remove a drink on the Apple Watch, simply give the screen a hard tap to access the buttons you need.

And as we mention in all of our app descriptions we LOVE your feedback. We enjoy incorporating ideas from our customers. Thank you for buying BAC Calculator.

Disclaimer: (Annoying part to protect us in case someone decides to be stupid)

Although BAC Quick Calculator uses a recognized system for measuring BAC levels, the values shown are influenced by many factors. BAC Calculator and Seaton 63 Design therefore accepts no responsibility or liability for the accuracy or completeness of the information provided.

Phew....Now we're safe to have fun and let you download the app. Enjoy!

What's New

Version 1.1

Hello There! We cleaned up some things. The iPhone app got some new graphics and both the iPhone and Apple Watch versions got their code cleaned up. That means you'll have a better experience. At least that was the plan. Let us know what you think and if there are any improvements you recommend. Enjoy!

Ratings and Reviews

Not accurate


No complication, and doesn’t track your drinks in terms of drinks (such as a beer or wine).

When you add a drink, it just adds 0.01 to your BAC, and counts down from there, so it’s completely inaccurate. :(

Dev: Add a UX that allows me to input in terms of drinks and I’ll try it again.

Solid, practical utility

Hail Ants

This app is very well designed with a simple interface. No graphs or charts or unnecessary wine/beer/liquor or drink size settings (which are just useless bells & whistles). It’s not a pretentious ‘Lifestyle’ app to help you quit drinking either. It just gives you a good estimate of your BAC based on number of drinks & time passed.

One request I have is it would be very helpful if it also had a drink counter on the display, i.e. the actual number of drinks you’ve had. That way you could make sure you clicked it accurately by comparing it to the number of drinks on your tab at any time.

Also the Watch app seems to have a bug in that it never remembers your weight. After you set & save it, when you open Settings again it always shows 0 (it only remembers male/female).


Seaton 63 Design LLC
17.4 MB
Health & Fitness
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
You must be at least 17 years old to download this app.
Frequent/Intense Alcohol, Tobacco, or Drug Use or References
© 2016 Seaton 63 Design LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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