If you think you can just have a few and “be good,” you might want to consult Intoxicheck and get a second, much more neutral opinion. Intoxicheck is an app that features a few tests to check your logical reasoning and reaction time once you have a little alcohol in your system. You’ll have to take the tests a few times while sober to establish a baseline – once you’ve done that, you can use the app while intoxicated to get an idea of just how trashed you really are.
For $0.99, Intoxicheck sounds like a decent way to at least give yourself a wake-up call as to just how much alcohol affects you – that is, assuming that you’re not so drunk that you can’t operate your phone. Also, please note that a “passing grade” is by no means a green light for the user to get behind the wheel of a car.