Drink Smart

Enter a few basic statistics, and Drink Smart will help you track your blood alcohol level. Just tap once per drink, and a large, clear UI will show you whether you’re in the safe zone. If you enter an emergency contact, the app will automatically send a message when you reach an unsafe level. The app does account for time: the same number of drinks within a shorter time is less safe, and you can watch your alcohol level go down as time passes.