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IntelliDrink PRO - Blood Alcohol Content (BAC) Calculator

By Raphael Wichmann

This app is only available on the App Store for iOS devices.


IntelliDrink is a sophisticated blood alcohol content (BAC) calculator. It has a simple user interface and uses a complex algorithm for precise calculations.

Watch your BAC rise and fall on the graph and analyze your consumption. Set a limit and get notified when you exceed or fall below your limit.

Dr. Gary Rosen, Professor of Mathematics, University of Southern California (USC):
"We used IntelliDrink to obtain estimated BAC in a research project aiming to calibrate sophisticated data analysis software for autonomous transdermal alcohol sensors. It has been ideal for our purposes, and we are planning on using it in a number of future studies."

User comments:

"As an expert in the field of BAC absorption and elimination, I am impressed by this app."

"Incredible. Absolutely wonderful and fascinating algorithm that takes into account absorption time."

"By far the best drink tracking app I've found... Cheers!"

"Way better (and easier to use) than expected. I can really, truly see this being a life-saver (or DUI)."

"Great app. I have been using it for a few weeks and tonight used it side by side with an Alco-sensor device that was just calibrated. It was within .001! I was surprised. This thing is accurate. Good job."

"This app is simply amazing. None of the other bac/drink tracking apps out there even come close!"

"A great deal. Seems very accurate. It really helps you get an idea of how long after a drink it affects you. The app looks great. The multi users is easy to switch between, letting you easily track friends. They seem to have the formula that is most accurate. Takes into account the time it takes you to have a drink. Real time graph is informative. 10 star A+++ app"

Here are some features of IntelliDrink:

- It uses a sophisticated algorithm for precise calculations based on scientific knowledge.

- It calculates the absorption and metabolism of alcohol over time.

- You can analyze your alcohol consumption using the statistics it provides.

- Apple HealthKit integration. Can read age, weight, height, sex and write BAC and calories.

- You own your data! IntelliDrink does not send any private data to the cloud.

- It features a BAC alarm that notifies you when you exceed or fall below your limit.

- It considers your age, weight, height, gender, drinking frequency and stomach content.

- You can create new drinks or modify existing ones.

- It’s battery friendly, with no background calculations.

A lot of effort was put into IntelliDrink’s algorithm for calculating the values. Most BAC calculators assume that you quickly downed your drink, and, even worse, they assume that you’ve already completely digested the drink. This is not how it works in real life.

The core concept of IntelliDrink is based on the scientifically accepted Widmark formula, which is used by the German justice system. This formula allows you to your BAC based on how many grams of alcohol you ingested.
But this formula does not consider the amount of time it takes you to ingest a drink, the content level of your stomach, or the speed of your metabolism.

IntelliDrink takes all of these factors into consideration because it uses a much more precise algorithm. When you use IntelliDrink, you can access data supported by solid scientific research in a beautiful and easy-to-use interface.

Please note that the values should be used only as a guide and should never be used to determine if you are able to drive.
IntelliDrink accepts no responsibility or liability for the accuracy or completeness of the information provided.

What's New in Version 2.2

Here comes another update for IntelliDrink! Thank you for your feedback and your great reviews. It’s great to improve IntelliDrink with you guys together!

- Apple HealthKit integration. Can read age, weight, height, sex and write BAC and calories.

- New Gestures! Swipe down or right to close screens. You can control IntelliDrink now easily with just your thumb.
Insider tip: Long press on a drink to drink it again.

- Standard drinks and calories added to statistics.

- The small status bar next to the name shows more information.

- Design optimizations.

- A lot of small features, tweaks and bug fixes.

Do you like the app? Please help me out and take a moment to review the app. You can also write me an email if you have any questions!

iPhone Screenshots

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Customer Reviews

Helpful if used correctly

This is not something you use to avoid a DUI. If you're drinking you shouldn't be driving.

This app is great for seeing not only how intoxicated you currently are, but how intoxicated you're going to be seeing as our bodies continue to process alcohol long after we've stopped drinking.

I don't know how close the BAC numbers are to what you'd find if you took a breathalyser, especially because there's a lot of room for inconsistencies based on how individuals enter the drink data, however if I use the app consistently, then I know what the in app numbers mean to me. For me if I hit or will hit 1.3, I need to stop drinking or risk wakeing up in a dumpster. Also I can look ahead and see what my estimated BAC will be the next day when it's time to get ready for work, which is more valuable to me than what my BAC is right now.

Easy to use, fantastic reporting!

I'm enthusiastic about the quality of this app because I've been looking for one like this for years and they have always been kind sketchy. I've now been using this for a few months and it's ideal for what I need. I don't use it to see if I'm legal as I always use Uber no matter when I drink. However I use it to monitor my overall intake of alcohol and related calories over time. It couldn't be more perfect. And it's easy to set up templates of your typical drinks so it's one click if you have another. This makes it easy to record your drinking patterns at the moment you are actually served the drink. Also it is now integrated into Apple Health.

Great app but buggy

I got the app a couple of days ago, and love the functionality. Very interesting to see how BAC will increase even after finishing the drinking session. However, it’s very buggy. For example, I have to quit out of the app after adding a new drink as the “return” button at the top left of the screen doesn’t work. Also, I recently added a new custom drink, and afterwards could no longer add a new drink without the app freezing. (I suspect it’s because the drink name was written in Chinese.) Please fix the bugs, as this is a “must have” app for us regular drinkers!

Suggestion: Link to WeChat / Facebook / Twitter / e-mail / etc. to disallow posts after BAC goes over a certain level. That would save me so much trouble...

IntelliDrink PRO - Blood Alcohol Content (BAC) Calculator
View in iTunes
  • $2.99
  • Category: Food & Drink
  • Updated:
  • Version: 2.2
  • Size: 34.2 MB
  • Languages: English, German
  • Seller:
You must be at least 17 years old to download this app.
  • Frequent/Intense Alcohol, Tobacco, or Drug Use or References

Compatibility: Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
All Versions: