Qualifier Plus IIIx/fx is an advanced mortgage finance calculator specifically designed for real estate professionals using iPhones and iPads. This app combines the functionalities of two models, offering tools for calculating loan payments, including P&I, PITI, and total payments for various loan types such as conventional, FHA, and VA loans. It is tailored for agents, brokers, investors, and other mortgage industry professionals, providing instant solutions to both common and complex finance questions.

Among its features are complete cash flow solutions, on-the-spot buyer qualifying, and the ability to email loan worksheets directly from the app. The app also includes tools for amortization, rent vs. buy comparisons, and future property value estimations. With built-in help functions and user-definable preferences, Qualifier Plus IIIx/fx streamlines the mortgage calculation process, making it an essential tool for anyone in the real estate finance sector.