Fisio Tools is an iPhone application designed to assist healthcare professionals in performing common calculations used in Respiratory Therapy and Mechanical Ventilation. The app is tailored for adult patients and provides detailed explanations of the formulas utilized.

The program offers a range of functions including favorites management, calculation of ideal PaO2, P/F ratio, ideal FiO2, predicted weight, alveolar-arterial O2 gradient, maximum inspiratory and expiratory pressures, Tobin's Index, airway resistance, static compliance, driving pressure, blood gas analysis, anion gap, ROX index, lung recruitability, AOP assessment, and various clinical scales such as Glasgow, MRC, RASS, Ramsay, HACOR, and mMRC Dyspnea scale.