TruAirspeed is a specialized True Airspeed Calculator designed for iPhone and iPad users. Unlike traditional calculators that rely solely on pressure altitude, TruAirspeed allows users to input indicated altitude and the Kollsman window’s pressure setting to derive pressure altitude, density altitude, true airspeed, and Mach number. This functionality is particularly useful for pilots seeking precise calculations during subsonic, non-transonic flights.

The app features user-friendly options for input and output units, as well as a choice between calculator-style and telephone-style keypads for data entry. Additionally, TruAirspeed accommodates a correction factor for the airspeed indicator or pitot-static system, enhancing accuracy for individual aircraft. Overall, this free utility provides essential tools for aviators looking to streamline their flight calculations.