It is a premium version of the free application Alco. If you want to try the application, download it for free at the link below (https://play.google.com/store/apps/details?id=mykolapryhodskyi.alcoTest).

Application informs about the legal consequences of driving under the influence of alcohol.
The scientific approach to calculations is based on the work of the Swedish researcher Eric Mateo Prochet Vidmark, who conducted a series of studies on this topic in Germany in the 1920s and published his "Theoretical Foundations and Practical Use of the Forensic Definition of Alcohol" (Widmark EMP ( 1932) Die theoretischen Grundlagen und die praktische Verwendbarkeit der gerichtlich-medizinischen Alkoholbestimmung. Urban & Schwarzenberg, Berlin Wien).
The calculations are carried out by you at your own peril and risk. The results of calculations cannot serve as evidence in court, be the basis for lawsuits and other claims, be used as any evidence, as well as to challenge the results of laboratory determination of the concentration of ethanol in blood and urine.
The application only gives an approximate result. It does not take into account many individual factors influencing the metabolism of the human body.
You can not drive while under the influence of alcohol.