Live blood alcohol calculator is so easy to use that you actually want to use it. When you start a drink open the app and choose it. When you finish a drink open the app again and choose the current drink again - that's it!
Calculates blood alcohol based on you gender, age, height, weight and time frame.
Easy setup: migrate your birthday, height, gender and weight from the Health-App if you like.
As seen on "The Today Show".