Hey I thought about something and I don't know if it makes sense but here it goes: How about an app where you type in you age, height, weight and you type in the type of beer of your choice, or drink and it tells you if you have this amount of beer or drinks your alcohol levels would be this.... So you'll know how many you can have before stepping out of you house. You'll know your limit of the night. sounds good? well just a thought.