Breathalyzer

★★★★★ @rachel BAC is percent of 1 percent. A BAC of .8 is 80% of 1 percent. Meaning that about .8% of your blood is alcohol. Your body would not function if anymore than 1% is alcohol.

★★★★★ Not bad Its fairly accurate and I like that it has various countries to choose from but I do wish their was a way to add drinks as you go instead of having to remember everything you drank at the end of the night.

★★★★★ Needs imperial units 5 stars if you allow units other than metric... Also US BAC is off by a factor of 10.

★★☆☆☆ 80% is wrong. Uh this app told me that the Max limit in the U.S. is 0.8 which would be 80% of my blood alcohol level would be alcohol, I don't think so. The actual limit is .08 as in 8%of the BAC.

★★☆☆☆ It needs a lot of help. First, the legal limit to drive in the U.S. is .08, not .8%. Second, it says that at a maximum I would have a max BAC of 1.05%, I would be dead at this point, and I am a fairly large man. To figure this, I punched a casual night out, a 12 pack and a couple shots of whiskey over a 5 hour period, I agree that I would be over the legal limit to drive, but I am not slamming it all at the end of the night as your graph and calculator might suggest. It should figure that you drank steadily over the period that was specified, while this isnt always the case it would produce the more accurate results. Finally, allow the programming to put decimals in for the alcohol percent and amount, as a standard shot is 1.5 oz, and most beers do not have an even percentage of alcohol. Also, you should have a selection for alcohol by volume (more common) or alcohol by weight (less common,but still used in some places). All in all, your app needs a lot of work.