This app functions as an ABG analyzer to diagnose acid-base abnormalities, select oxygen delivery methods using FiO2 and P/F, and estimate A-aDO2. This new version also include "AKI diagnosis" by the algorithm calculating not only FENa and FEUN but also FEUrate. Disclaimer: The calculation results provided by this app are not a substitute for clinical diagnosis. Clinical decisions should not be made solely based on the results from this program. Before making any medical decisions based on the use of this app, it is essential to seek advice from a physician for non-physician user.