Алкогольный калькулятор is a free Android app developed by AF Mobile. This app helps you calculate the amount of alcohol in your blood and assess your condition based on the amount of alcohol you have consumed, its strength, and the time elapsed since you drank it. It also features a "reverse calculation" option, which calculates the recommended amount of alcohol to consume based on the strength of the drink and the time required for the complete elimination of alcohol from your bloodstream. With this feature, you can determine the maximum dose of alcohol to consume before getting behind the wheel.

The app has a simple and user-friendly interface, making it easy to navigate. You can input the amount of alcohol you have consumed, the strength of the drink, and the time elapsed since you drank it. After that, the app will provide you with an estimate of your blood alcohol content and your current state.